Filter system

Abstract

Filter system for filtering liquids containing coarse material, sediment, oily liquid and / or the like, comprising a container (1a) with at least three chambers (1, 2, 3) and pumping devices (33, 37) arranged in the third chamber (3), characterized in that a. the first chamber (1), the second chamber (2) and the third chamber (3) are arranged in series one after the other in a flow direction (92) of the wastewater to be filtered, b. an inlet opening of a first pumping device (33) is connected as a suction side to an outlet opening of a first discharge pipe (30) and / or a second discharge pipe (31), c. an inlet opening (32) of the first drain pipe (30) for emptying the first chamber (1) and the second chamber (2) is arranged in the area of ​​a bottom (44) of the second chamber (2), d. an outlet opening of the first pumping device (33) is connected as the pressure side to an inlet opening of a sixth discharge pipe (34) for the discharge of wastewater containing coarse material from the first chamber (1), wastewater and / or sediment and wastewater containing sediment from the second chamber (2) and / or oily liquid and / or process water from the third chamber (3) via an outlet opening (36) of the sixth discharge pipe (34) to the outside (70), e. an inlet opening of the first pumping device (33) is connected as a suction side to an outlet opening of a third discharge pipe (60), the inlet opening (60a) of the third discharge pipe (60) is arranged or adjustable in the area of ​​oily liquid floating on the process water surface or at a predetermined height of the process water surface for the purpose of extracting oily liquid floating on the process water surface via the sixth discharge pipe (34) to the outside (70), f. an inlet opening (41) of a second pumping device (37) as a suction side in the area of ​​the bottom (44) of the third chamber (3) for drawing in process water for flushing the second chamber (2) or the inlet opening (41) of the second pumping device (37) is connected to an outlet opening of a fifth discharge pipe (40), wherein an inlet opening (41) of the fifth discharge pipe (40) is arranged in the area of ​​the bottom (44) of the third chamber (3) for drawing in process water from the third chamber (3) and flushing the second chamber (2) with the process water, g. an outlet opening of the second pumping device (37) is connected as a pressure side to an inlet opening of a supply pipe (49) for the purpose of conveying the process water and flushing the second chamber (2) or at least a part of it and / or the first chamber (1) and / or the front area of ​​the second chamber (2).

Description

[0001] The invention relates to a filter system for the continuous operation of cleaning or regeneration of wastewater, such as rainwater, for the removal of coarse material, sediment, oily liquid and / or the like, with a container accommodating at least three chambers, wherein the first chamber, the second chamber and the third chamber are arranged in a flow direction of the wastewater to be filtered, and a filter system with the self-cleaning, reliably operating cleaning device for the continuous operation of cleaning or regeneration of wastewater, such as rainwater, of coarse material, sediment, oily liquid and / or the like, with a container having at least three chambers.

[0002] Sedimentation filter systems are known in the art for cleaning wastewater, such as process fluids, industrial water, and car wash fluids, resulting from processing or production processes containing particles, sediment, and contaminated liquids, in order to transfer this wastewater to a stationary settling tank for settling. Due to the large volumes of wastewater required to remove sediment, such as sludge, conventional settling tanks with continuously operating filter systems have been developed. In these systems, inclined, plate-like filter lamellae of a lamella clarifier are arranged in a sedimentation tank. The settling sludge settles on the surface of these lamellae and slides to the bottom of the sedimentation tank or migrates there, from where it can be removed by a continuously operating discharge device in the form of conveyor belts or similar equipment.

[0003] So-called lamella clarifiers are intended to increase the settling velocity and thus the throughput of the wastewater being treated, while maintaining a comparatively small volume in the sedimentation tank. This increase in performance is achieved primarily by incorporating numerous angled lamellae or cavities into the lamella clarifier within the filter system. These lamellae shorten the settling path, preventing sediments or particles from obstructing each other during settling. However, it has been observed that lamella clarifiers, particularly in continuously operating filter systems, are difficult to clean. This is because both the lamella clarifier itself and the bottom layer beneath it, which traps the sediment migrating from the lamella clarifier towards the bottom layer, are difficult to clean.

[0004] DE 10 2010 026 738 A1 relates to a device for separating substances, in particular fats and oils, from water, preferably from contaminated wastewater from cleaning facilities in kitchens, wherein the substances have a density different from that of water. The device has a first chamber for separating substances with a higher density than water and a second chamber for separating substances with a lower density than water, the two chambers being separated from each other by a vertical partition wall having an opening in its upper third. A filter-like separation element and a pump for discharging filtered wastewater are arranged in the second chamber.

[0005] DE 43 07 046 A1 relates to an arrangement for treating wastewater, in particular wastewater from car washes. The arrangement comprises a first container for receiving the wastewater and at least one second container for removing treated wastewater. The first container is connected via a shut-off first line to a third container that can be filled by negative pressure and automatically emptied when a predetermined fill level is reached. This third container is in turn connected directly or indirectly to the second container. A water jet pump is arranged in the second container holding treated wastewater or in a further container. The suction side of this pump is connected to the third container via a shut-off second line. The suction side can be connected to a sludge collection container.

[0006] The continuously operating sedimentation filter system described in DE 101 34 945 A1, although in its simplest form having three spaced-apart partition walls with inclined receiving surfaces forming two settling areas, even this simple arrangement of inclined chutes of the lamella clarifier, which serve to settle sediment, does not offer a sufficient way to remove sediment from the conventional sedimentation filter system. This sedimentation filter system collects on the floor below the chutes and on the surfaces of the chutes facing the flowing wastewater.

[0007] The method described in DE 42 31 790 A1 for treating wastewater using a filter tray also aims to solve the problem of removing oily liquids and sediment from wastewater. Using the conventional wastewater treatment method, the wastewater is passed between a multitude of inclined lamellae of the lamella clarifier. The water is fed to the lamellae at their lower edge, and the treated wastewater then flows out as purified water at the top of the lamellae. The separated suspended solids collect in a space below the lamellae. Here, too, the problem of insufficient cleaning of such a filtration system becomes apparent, as the oily liquid floating on the surface of the treated wastewater (hereinafter also referred to as process water or "clean water") hinders the cleaning of the filtration system.

[0008] Although DE 199 57 570 A1 also discloses a lamella clarifier for clarifying liquids containing solids, described as wastewater containing sediment, wherein a movable bridge is arranged above the lamellae, which can be positioned precisely over each lamella and / or each space between the lamellae, the conventional teaching also overlooks the requirement to clean the lamella clarifier of sediment and of sediment accumulated on the bottom, which may contain coagulates, suspended solids and the like.The lamella clarifier described in this publication, also known as an inclined plate separator, inclined plate separator, rapid clarifier, or compact settler, is characterized by a high volume flow rate with a relatively small footprint. This filtration system houses the lamella clarifier. Cleaning it is problematic because, after sediment accumulates on the bottom and the inclined surfaces of the lamella clarifier, repeated cleaning is necessary – though the results are often insufficient. Therefore, this state of the art proposes cleaning the lamella clarifier using brushes, possibly with a high-pressure cleaner.

[0009] The publication also points out the problem that the lamella clarifier requires a minimum level of constant monitoring to achieve a uniform flow and thus optimal clarification performance, making it necessary to carry out a thorough, i.e. long-lasting, inspection and cleaning at regular intervals.

[0010] Therefore, it is also the task of the cleaning device and filter system to be provided to interrupt the operation of the filter system only when there is a sufficient amount of coarse material, sediment on the bottom and / or sediment on the lamella clarifier.

[0011] For cost reasons alone, regular and / or continuous inspection and thus costly interruption of the filtration system should be avoided as much as possible in order to achieve and maintain economically efficient wastewater filtration.

[0012] Therefore, it is necessary that the filtration using a filter system on the one hand and the cleaning of the filter system on the other hand using a cleaning device work together optimally and thus also cleverly, in order to only interrupt the operation of the filter system when the need for cleaning actually exists.

[0013] Regular cleaning that is independent of the level of accumulated sediment and also depends on the duration of the cleaning should be avoided if possible, especially since the continuous operation of the filter system does not necessarily lead to a predetermined amount of coarse material and sediment, but rather because the composition of the wastewater to be filtered, including coarse material, sediment, sludge, suspended solids, coagulates, etc., varies.

[0014] Therefore, the self-cleaning, reliably operating wastewater treatment plant must also include a cleaning or regeneration device that only requires operation when a sufficient quantity of coarse material, sediment, etc., accumulates in the plant as a result of the filtration or treatment process. The plant should therefore be designed not only to minimize construction costs but also to allow for rapid cleaning, thus maintaining cost-effectiveness for the plant operator.

[0015] During sedimentation, rainwater flows through the system. On its way through the system, substances that are lighter than water float to the surface, while heavier substances sink. Dissolved substances also adhere to the sinking substances and are deposited in the sediment. A prerequisite for sedimentation is that the sedimentation time (settling time) of the suspended solids is shorter than the flow time (residence time). Since the settling velocity of a suspended solid is independent of the structure's height and depends only on the flow rate (Q) and the surface area (A = B x L) of the system, the surface loading rate qA (m / h) was introduced instead of the flow rate (m / h).

[0016] Regarding sedimentation in a lamella clarifier, lamellae are installed in the sedimentation system to optimize the sedimentation effect and increase the effective surface area. This allows the design flow rate Qbem (maximum hydraulic feed rate) to be increased, or enables lamella clarifiers to achieve comparable efficiencies with a significantly smaller volume. Additionally, the lamellae create a directed flow field, which considerably shortens the settling paths of the particles. In lamella clarifiers, these additional effective surfaces are inclined to allow the sediments to slide into the sludge trap under gravitational forces, thus promoting self-cleaning of the lamellae.

[0017] Lamella clarifiers also require maintenance and cleaning. The DWA A 102 standard recommends systems that are not subject to continuous backflow. This means that the operator of a lamella clarifier must regularly commission a vacuum truck and personnel to clean and maintain the system. Furthermore, research reports and dissertations indicate that sediment accumulates on the lamellae over time, significantly reducing the system's efficiency. This forces the operator to replace the installed lamella packs to restore the intended efficiency. This involves considerable additional effort and expense.

[0018] The tasks to be solved are aimed, among other things, at enabling the monitoring of sediment accumulation on the ground, ensuring that the cleaning device is easy to operate, enabling automatic and comprehensive cleaning of the filter system with lamella clarifier, and keeping repairs, maintenance and their costs low by using as few moving parts as possible.

[0019] It is evident that the prior art completely overlooks the problem of cleaning filter systems, focusing solely on wastewater treatment while neglecting the need for comprehensive, short-term cleaning of the filter system itself, which is of equal importance to its operation. For example, while DE 10 2013 101 848 proposes in detail the filtration of suspended particles and solids from wastewater using a lamella clarifier, it completely overlooks the cleaning of the filter system. The detailed description of the operation of lamella clarifiers in a filter system, such that the wastewater or sewage flowing into the sedimentation tank passes directly to the settling plates of the lamella clarifier and does not disturb or stir up the sediment accumulated at the bottom of the tank, is insufficient.This document describes the arrangement of filter systems, in which a partition wall is positioned in the sedimentation tank in a top-down view such that the interior of the sedimentation tank is divided into a first area, comprising the wastewater inlet (settling zone), and a second area, comprising the treated wastewater outlet and the settling plate. The first and second areas are permeable to each other at the bottom for the passage of wastewater, and the settling plates of the lamella clarifier extend transversely through the second area with a positive slope towards the treated wastewater outlet. However, it is not sufficient to merely enable the filtration of wastewater to remove coarse material, sediment, and the like. Rather, reliable and cost-effective cleaning of the filter system's sedimentation tank is also essential.

[0020] Therefore, it is also an object of the invention to provide a filter system that accommodates a sedimentation tank, the operation of which—whether for filtration, regeneration, or the regeneration of wastewater into process water—only needs to be interrupted briefly to remove coarse material, sediment, etc., from the sedimentation tank with its lamella clarifier. It is equally necessary that the cleaning of the sedimentation tank be of short duration, since in practice wastewater is continuously generated and requires treatment. Furthermore, the filter system accommodating the cleaning device should operate reliably and without requiring monitoring of the regeneration process or the cleaning of the sedimentation tank.

[0021] The problems are solved by the self-cleaning, reliably functioning filter system according to the main claim; the dependent claims relate to preferred embodiments and exemplary embodiments of the self-cleaning, reliably functioning filter system according to the invention for filtering wastewater containing coarse material, sediment, oily liquid and / or the like; the features provided with optional indications, such as "preferably", are preferred embodiments of the invention, the features listed with "and / or" can be preferred embodiments of the invention both individually and in various combinations.

[0022] The invention relates to a self-cleaning, reliably operating filter system for filtering liquids, such as wastewater, coarse material, sediment, oily liquid and / or the like, for example, in controlled continuous operation, filtration, also called cleaning or regeneration, of liquids, e.g., wastewater such as rainwater, for the removal of coarse material, sediment, oily liquid and / or the like, with a container, wherein the container accommodates at least three chambers with pumping devices, which may be arranged in the third chamber, The first chamber, the second chamber and the third chamber are arranged in series in the longitudinal direction of the container, e.g. in a flow direction of the liquid to be filtered, such as wastewater, from an inlet nozzle of the container which introduces the liquid into the first chamber of the container to an outlet nozzle of the container which discharges the liquid purified to process water from the third chamber, a first pumping device is advantageously arranged in the third chamber, the interiors of the chambers are at least partially separated from each other by means of partition walls, an inlet opening of the first pumping device as the suction side, preferably via a multi-way valve, is connected to an outlet opening of a first discharge pipe and / or to an outlet opening of a second discharge pipe, an inlet opening of the first drain pipe is arranged in the area of ​​the bottom of the second chamber, preferably in a rear lower area of ​​the bottom, for emptying the first chamber and / or the second chamber, for example for suctioning wastewater and / or coarse material accumulated in the first chamber and / or wastewater and / or sediment accumulated in the second chamber, An outlet opening of the first pumping device is connected as the pressure side to an inlet opening of a sixth discharge pipe for the discharge of wastewater and / or coarse material from the first chamber and / or wastewater and / or sediment from the second chamber and / or oily liquid and / or process water from the third chamber via an outlet opening of the sixth discharge pipe to the outside, e.g. for further processing in a sewage treatment plant, collection tank or the like. The inlet opening of the first pumping device is connected to an outlet opening of a third discharge pipe, which is preferably movable and / or adjustable in height along partition walls. This inlet opening of the third discharge pipe is located in an area of ​​oily liquid floating on the process water surface or at a predetermined height of the process water surface for the purpose of extracting oily liquid floating on the process water surface via the sixth discharge pipe to the outside. An inlet opening of a second pumping device, serving as the suction side, is located in an area of ​​the bottom of the third chamber for the purpose of drawing, for example, process water from the third chamber to flush the second chamber, for example, a lamella clarifier located in the second chamber. or The inlet opening of the second pumping device is additionally connected via a multi-way valve or alternatively to an outlet opening of a fifth discharge pipe, wherein an inlet opening of the fifth discharge pipe, e.g. pivotable, is arranged in the area of ​​the bottom of the third chamber, for the purpose of drawing in, e.g., process water from the third chamber for flushing the second chamber, such as the lamella clarifier, with process water. and / or An outlet opening of the second pumping device is connected to an inlet opening of an inlet pipe for the purpose of flushing the second chamber or at least a part of it, preferably the lamella clarifier and / or its cavities with process water.

[0023] The filter system according to the invention can also include a self-cleaning, reliably operating cleaning device for the filtration, also called cleaning or regeneration, of wastewater, such as rainwater, for example in controlled continuous operation, for the removal of coarse material, sediment, oily liquid and / or the like, with a container having at least three chambers, wherein the first chamber, the second chamber and the third chamber are arranged in a flow direction of the wastewater to be filtered, wherein a first pumping device is arranged in the third chamber. whose inlet opening, preferably via a tubular discharge and / or a multi-way valve connected thereto, to an outlet opening of a first discharge pipe, the inlet opening of which, preferably located in the area of ​​the bottom, is in the second chamber, e.g. in the front area and / or the rear lower area of ​​the second chamber for emptying the chambers, for suctioning coarse material accumulated in the first chamber from the wastewater, e.g. solids such as sand, and / or the like, for suctioning sediment accumulated in the second chamber from the wastewater, such as flakes, residues of solids, sediment accumulated as a result of operation of the lamella clarifier and / or flushing of the same including its cavities and / or is arranged to a second drainage pipe, whose inlet opening, preferably located in the area of ​​the bottom, is arranged in the first chamber for emptying the first chamber, such as suctioning of sediment accumulated in the first chamber and / or as a result of rinsing the second chamber or a part thereof, in particular the lamella clarifier including its cavities, and / or whose inlet opening is connected to an inlet opening of a third discharge pipe, the inlet opening of which is arranged in the third chamber, preferably in the area of ​​oily liquid floating on the process water or surface, or at a predetermined height of the process water level established after filtration has ended, optionally the inlet opening being height-adjustable, for discharging oily liquid floating on the process water level to the outside, and / or An outlet opening of the first pumping device, e.g. via a multi-way valve, is connected to an inlet opening of a sixth discharge pipe for the discharge of coarse material from the first chamber, sediment from the second chamber, oily liquid and process water from the third chamber and / or the like via an outlet opening of the same to the outside.

[0024] Another item is directed towards the use of the filter system for the filtration of wastewater.

[0025] A further aspect of the invention relates to a filter system with a self-cleaning, reliably operating cleaning device for the continuous cleaning or regeneration of wastewater, such as rainwater, of coarse material, sediment, oily liquid and / or the like, with a container having at least three chambers, wherein the first chamber is provided as a first settling area for the settling of coarse material and / or the second chamber as a second settling area for the settling of sediment, such as suspended solids, flocs, sludge or the like, and the third chamber is provided for receiving wastewater freed of sediment as process water and conveying it to the outside.

[0026] An additional object of the invention relates to a filter system with a self-cleaning, reliably operating cleaning device for the continuous cleaning or regeneration of wastewater, such as rainwater, coarse material, sediment, oily liquid and / or the like, with a container having at least three chambers, wherein, the first chamber as the first settling area for the settling of coarse material and / or the second chamber as a second settling area for the settling of sediment, such as suspended solids, flocs, sludge or the like, and / or the third chamber is designed to receive sediment-free wastewater as process water and to convey it to the outside, whereby A second drain pipe, preferably located in the area of ​​the bottom of the first chamber and equipped with an inlet opening, preferably accessible from the outside, is arranged to the outside for emptying the first chamber and / or suctioning out coarse material, such as sand or the like, that has accumulated in the first chamber. A first discharge pipe, preferably accessible from the outside, with an inlet opening located preferably in the area of ​​the bottom of the second chamber or in the front area and / or lower rear area thereof, for emptying the second chamber or for suctioning sediment and process water enriched with sediment that has accumulated in the second chamber during operation of the lamella clarifier and / or as a result of flushing the second chamber or part thereof, in particular the lamella clarifier; it is shown that the first chamber can also be emptied or coarse material accumulated in the first chamber can be suctioned outwards via the first discharge pipe at the same time.A third discharge pipe, preferably accessible from the outside, is provided in a third chamber with its inlet opening, preferably in the area of ​​oily liquid floating on the process water or at a predetermined height of the liquid level of the process water. This discharge pipe can be used to discharge oily liquid floating on the liquid level of the process water to the outside, and / or a fifth discharge pipe, provided with its inlet opening in the area of ​​the bottom of the third chamber, is provided for drawing process water from the third chamber and conveying it onward for the purpose of rinsing the second chamber or a part thereof, such as the lamella clarifier. Advantageously, the first discharge pipe, the second discharge pipe and / or the third discharge pipe are arranged at least with their outlet openings in or outside the container.

[0027] Another aspect of the invention relates to a filter system with a self-cleaning, reliably operating cleaning device for the continuous cleaning or regeneration of wastewater, such as rainwater, coarse material, sediment, oily liquid and / or the like, comprising a container with at least three chambers, wherein the first chamber is liquid-tightly separated from the second chamber by a first partition wall attached to the bottom of the container and oriented perpendicular to the bottom and / or to a ceiling wall, wherein The upper edge of the first partition, facing the ceiling wall of the tank, is spaced away from the ceiling wall, creating a free space between the ceiling wall of the tank (spaced from the floor) and the upper edge of the first partition. This space acts as an overflow weir, allowing wastewater free of coarse material, such as sand, solid particles, or the like, to flow from the first chamber (as a first settling zone) into the second chamber (as a second settling zone) and / or the front area of ​​the second chamber. Advantageously, the first chamber has an inlet pipe leading from the outside, with its outlet opening (e.g., closable by a valve) for introducing wastewater into the first chamber, and / or the third chamber has an outlet pipe leading from the outside, with its outlet opening (e.g., closable by a valve) for introducing wastewater into the first chamber.a valve-closable inlet opening is arranged or opens to discharge the process water via its outlet opening during or during filtration of the filter system from the third chamber to the outside, in the second chamber a second partition wall aligned parallel to the first partition wall is attached liquid-tight against the ceiling wall, a lower edge of the second partition wall facing away from the ceiling wall and located above the floor is spaced away from the floor, forming a free space between the floor and the lower edge of the second partition wall for wastewater to flow through from a front area of ​​the second chamber into the rear lower area of ​​the second chamber facing the floor of the tank. in the rear area of ​​the second chamber, facing the third chamber, between the rear area, facing the third chamber, the lower area, facing the floor or first partition wall, and the rear area of ​​the second chamber, facing the third chamber, the upper area facing away from the first partition wall, as well as the area of ​​the second chamber A lamella clarifier with a plurality of parallel, preferably inclined, cavities laterally bounded by lamella walls for the flow of wastewater from the lower rear area of ​​the second chamber towards the rear upper area of ​​the second chamber facing the ceiling wall of the tank, for the purpose of sediment settling and migration, e.g. on inclined lower lamella walls of the cavities of the lamella clarifier facing the wastewater flows occurring in the cavities or lamellae, towards the bottom, is set liquid-tight against the second and third partition walls, and / or the outlet openings of the lamella clarifier for the discharge of sediment-free wastewater, now referred to as process water, are facing away from the ceiling wall of the first partition wall, and the inlet openings of the lamella clarifier for the introduction of wastewater freed from coarse material are facing the floor or the first partition wall, and / or the rear lower area of ​​the second chamber facing the third chamber is separated from the third chamber, e.g. as 3.The settling area for oily liquid is separated by a third partition wall attached to the bottom of the container, with an upper edge of the third partition wall facing the top wall of the container, spaced away from the top wall as if from the top wall, creating a free space between the edge facing away from the bottom or spaced away from the top wall of the container and the upper edge of the third partition wall, preferably the edge being provided as an overflow for process water, and / or an overflow channel is arranged in the area of ​​the outlet openings of the cavities to receive sediment-free wastewater exiting the outlet openings as process water via its lateral overflow edges, preferably provided with triangular serrations, and conveying it in the overflow channel via its side opening facing the third chamber and / or via the upper edge of the third partition wall towards the third chamber.

[0028] An object of the invention relates to a filter system with a self-cleaning, reliably operating cleaning device for the continuous cleaning or regeneration of wastewater, such as rainwater, coarse material, sediment, oily liquid and / or the like, comprising a container with at least three chambers, wherein the first chamber serves as a first settling zone for the settling of coarse material and / or the second chamber as a second settling zone for the settling of sediment, such as suspended solids, flocs, sludge or the like, and the third chamber is provided or usable or is used for receiving sediment-free wastewater as process water and conveying it to the outside, and a second discharge pipe, preferably accessible from the outside and provided with its inlet opening, preferably located in the area of ​​a bottom of the first chamber, for emptying the first chamber or the third chamber.The suction of coarse material, such as sand or the like, that has accumulated in the first chamber is intended or usable or is used to the outside. a first discharge pipe, preferably accessible from the outside, with an inlet opening arranged preferably in the area of ​​the bottom of the second chamber or a front area and / or a lower rear area thereof, for emptying the second chamber or for suctioning sediment accumulated in the second chamber during operation of the lamella clarifier and / or as a result of rinsing the second chamber or part thereof, in particular the lamella clarifier, which is usable or is used to the outside. a third discharge pipe, preferably accessible from the outside, with its inlet opening, preferably located in an area of ​​oily liquid floating on the process water or surface, or at a predetermined height of the process water surface, for the discharge of oily liquid floating on the process water surface to the outside, is provided or usable or is used and / or an inlet pipe, the outlet openings of which are arranged on, above or above the overflow channel and / or the outlet openings of the lamella clarifier, is provided or usable or is used by means of process water from the third chamber for the purpose of flushing the second chamber or a part thereof, such as the lamella clarifier.

[0029] For the purposes of this invention, liquids are also understood to include those that may be wastewater, containing solids, also referred to as coarse material, such as grains of sand, plastic particles, and / or the like, sediment, suspended solids such as flakes, protein flakes, and / or the like. For the purposes of this invention, wastewater is also understood to include liquids of any type and composition, such as process fluids, rainwater, industrial wastewater, wastewater from car washes, other surface water, non-potable water, cooling water, groundwater, river water, and other fluids that can be used domestically, non-domestically, or commercially.For the purposes of the invention, process water is also understood to mean a liquid that is at least largely free of solids, such as solid substances, for example, non-deformable substances like grains of sand, plastic particles and / or the like, sediment, and suspended solids, for example, deformable substances like flakes, protein flakes and / or the like. For the purposes of the invention, chambers arranged one behind the other are also understood to mean those in which the two adjacent or mutually adjacent chambers have a common partition and a common opening, such as a free space; the free space may be laterally limited, for example, by the partition arranged in or against the lower region of the container or chambers and the ceiling wall, or by the partition arranged in or against the upper region of the container or chambers and the bottom and the opposite side walls of the container.

[0030] The pumping devices are preferably arranged in a chamber, as in the third chamber, to facilitate the inspection of the pumping devices, their function, tightness, etc., from only one location; conventional multi-way valves are advantageously interposed between the pumping devices and the discharge pipes connected to the pumping devices in order to be able to connect more than one discharge pipe to the inlet and outlet openings of the pumping devices.In the context of the invention, the extraction or suction of coarse material from the first chamber via a pumping device also includes the possibility that the coarse material, together with the wastewater, can be extracted and conveyed from the first chamber by a pumping device directly via its inlet opening and / or via its inlet opening connected to a discharge pipe. "Directly via inlet opening" in the context of the invention also includes the possibility that the inlet opening of the pumping device need not be connected to a discharge pipe. It is evident that the mere arrangement of the inlet opening of the pumping device in the third chamber and / or in the second chamber is sufficient to extract the wastewater containing coarse material from the first chamber.

[0031] In the context of the invention, the extraction or suction of sediment from the second chamber via a pumping device also includes the possibility that the sediment, together with the wastewater, can be extracted and conveyed from the second chamber by a pumping device directly via its inlet opening and / or via its inlet opening connected to a discharge pipe: for the sake of simplicity, the wastewater accumulated in the second chamber and conveyed from the first chamber is still referred to as wastewater, since only with the lamella clarifier can the wastewater be clarified and purified into process water by separating the sediment.

[0032] For the sake of simplicity, the process water passed from the second chamber to the third chamber, and the process water discharged from the third chamber to the outside, is also referred to as process water, even if the process water passed from the second chamber to the third chamber may still contain organic liquid, such as oily liquid, which can, however, be separated in the third chamber. According to the invention, the process water discharged from the third chamber to the outside can also be referred to as process water clarified or freed from organic liquid, such as oily liquid.

[0033] The filter system according to the invention comprises, among other things, a container, also called a sedimentation tank, with a reliably functioning cleaning device. For the purposes of the invention, a cleaning device is also understood to be a container with at least three chambers, such as the first chamber, the second chamber, and the third chamber, with pumping devices, discharge pipes, and / or inlet and outlet nozzles, etc. The container comprises, for example, three chambers, here a first chamber, a second chamber, and a third chamber. Wastewater is introduced into the first chamber via an inlet nozzle, also called a dip tube, which may optionally include an inspection opening for examining the interior of the first chamber. In the first chamber, the wastewater is freed from coarse material, such as sand, which accumulates on the bottom of the first chamber. From the first chamber, the wastewater, now free of coarse material, flows over an edge of, for example, a [missing information].The first partition wall, located between the first and second chambers and leaving a gap between the partition wall and the ceiling wall, separates the first chamber from the second. Advantageously, the first partition wall is installed in a liquid-tight manner against the floor, preventing wastewater from flowing between the partition wall and the floor. Apart from the aforementioned gap, no wastewater enters the second chamber in the area of ​​the partition wall due to its liquid-tight design and installation against the floor. Sediment accumulates on the floor in the front section of the second chamber, facing the first chamber, as well as in the rear section of the second chamber, facing away from the first chamber, due to the suppression of turbulence.

[0034] The second chamber is divided into a front and a rear section by a partition wall, also called a second partition wall. The partition wall is attached to the ceiling wall, creating the lower clearance between the edge of the partition wall and the floor. The partition wall is attached to the ceiling wall. Advantageously, the partition wall is attached to the ceiling wall so that no wastewater can flow between the partition wall and the ceiling wall. In the area of ​​the partition wall—apart from the aforementioned clearance—no wastewater enters the second chamber. In the area of ​​this partition wall—apart from the clearance between the partition wall and the floor—no wastewater, free of coarse material, passes from the front section into the lower rear section of the second chamber due to the liquid-tight design and attachment of the partition wall to the ceiling wall.

[0035] The second chamber is separated from the third chamber by a partition wall, also called a third partition, which is set against the floor, forming the upper free space between the edge of the partition wall and the ceiling wall. A sedimentation clarifier or lamella clarifier is arranged between the two partition walls, so that no wastewater can flow between the lamella clarifier and the partition walls towards the ceiling wall. The wastewater is forced into partial flows and forced to flow through the cavities or tubes of the lamella clarifier. The wastewater flows through the lamella clarifier from the lower rear section of the second chamber to the upper rear section of the second chamber.From the outlet openings of the lamella clarifier located on the top side, facing the ceiling wall, the wastewater, freed from sediment in the second chamber and referred to here as process water, flows into the upper rear section of the third chamber. It can then flow into the third chamber via an overflow channel located in this upper rear section, for example, after flowing over the upper edge of this partition. The process water accumulating in the third chamber is free of both coarse material and sediment. An outlet opening of the second pumping unit can also be connected, for example, via a multi-way valve, to an inlet opening of a feed pipe for flushing the second chamber or at least a part of it, preferably the lamella clarifier and / or its cavities, and / or to an inlet opening of a fourth discharge pipe for draining process water and / or oily liquid from the third chamber to the outside.

[0036] For the purposes of this invention, sediment is understood to mean suspended solids, flocs, and / or the like; a precise definition for separating coarse material on the one hand and sediment on the other is sometimes only possible to an insufficient degree, since, for example, flocs may be partially bound to solid components, and sand may be partially bound to flocs. For the purposes of this invention, the wastewater conveyed through the lamella clarifier is referred to as process water. If wastewater containing an oily or hydrophobic liquid is introduced into the filter system according to the invention, the oily liquid collects on the surface of the process water, as a floating, oil-containing phase, which can be extracted, for example, in the third chamber. Consequently, coarse material, such as sand, solids, etc., is retained in the first chamber due to the first partition.In the second chamber, the wastewater directed into the second chamber is freed from sediment by the slanted or inclined lamellae of the lamella clarifier; the wastewater freed from sediment, referred to here as process water, is also called "clean water" and is collected in the third chamber.

[0037] The liquid-tight sealing of the first and third partitions against the bottom and the second partition against the ceiling of the tank ensures controlled and quantitative overflow over the edges of the partitions. The liquid-tight sealing of the lamella clarifier against the second and third partitions ensures the quantitative flow of wastewater in the form of partial flows only through the cavities of the lamella clarifier, with sediment settling on the bottom of the second chamber and / or forming on the walls of the lamella clarifier tubes that define the cavities. The filter system according to the invention comprises a reliably functioning cleaning device. The cleaning device according to the invention comprises a first pumping unit, which can be arranged, for example, in the third chamber, and which is connected to a first discharge pipe, for example, via a multi-way valve.For the purposes of the invention, connecting or coupling also includes coupling while maintaining the continuity of, for example, wastewater or process water, e.g., within the interior spaces of the coupling points or the flange areas, between, for example, a valve and a drain pipe, inlet or line, unless a valve or multi-way valve interrupts this in the closed position.

[0038] The valve's switching capability, for example, its switching from its closed position to its open position and from its open position to its closed position, is conventionally controlled and switched by a switching device, such as an on / off switch, connected to the valve and its controller. The first discharge pipe has an inlet opening, which can be located in the area of ​​the bottom of the second chamber and can serve to empty the first and second chambers, thus suctioning out coarse material, such as sand or the like, accumulated in the first chamber and sediment from the second chamber. The first and / or the pumping devices, e.g.,A multi-way valve, controlled by a switching device connected to the control unit and operated by the control unit, can be switched between the on and off positions, which may correspond to the operating and rest positions, such as a two-, three-, or four-way valve. This valve is connected to discharge pipes, such as the first pump unit to the first, second, third, and / or sixth discharge pipes, and the second pump unit to the inlet pipe and / or fifth discharge pipe. The second discharge pipe has an inlet opening, which may also be located in the area of ​​the bottom, in this case, the first chamber. The second discharge pipe may also have several inlet openings located in the lower area of ​​the first chamber, e.g.,The area facing the openings is provided for emptying the first chamber and / or in the rear and / or the front lower and / or rear lower areas of the second chamber for emptying the second chamber and thus for suction of material in the first chamber and / or the second chamber when wastewater flows through the first chamber and / or when the lamella clarifier is in operation and / or as a result of flushing the second chamber or part of it, in particular of coarse material and / or of sediment accumulated by means of a lamella clarifier.

[0039] For the purposes of this invention, suction is also understood to mean drainage, removal, conveyance, pumping, transport, and the like, advantageously by means of pumping devices. For the purposes of this invention, filtration is also understood to mean the removal or extensive removal of coarse material and sediment from the wastewater introduced into the filter system according to the invention for the provision of process water, and the removal of organic liquids, such as oil-containing liquids, from the wastewater for the provision of process water or of process water free of organic liquids, such as oil-containing liquids, which can also be referred to as pure water.

[0040] The process water, as well as the clean water liquid, can be conveyed or discharged from the third chamber to the outside via the discharge nozzle leading into the third chamber; in the event of the occurrence of organic substances, such as oily, floating liquid, on the surface of the process water accumulated in the third chamber, it is easy for the filter system according to the invention to remove this from the process water or from the surface of the process water in order to provide clean water liquid.

[0041] Furthermore, the first pumping unit can be connected, for example via a multi-way valve, to a third discharge pipe with its inlet opening. The oily liquid, which can accumulate in the third chamber and floats on the process water, flows in through this inlet opening and is pumped out. The inlet opening of the third discharge pipe can be manually or automatically height-adjustable by means of a control device, or it can be positioned or set at a predetermined height on the process water level or surface, or within the area of ​​the oily liquid floating on the process water or surface (detectable by a measuring device), in order to quantitatively—that is, as completely as possible—drain the oily liquid and / or pump it to the outside.The third drain pipe can be partially arranged as an inner pipe within the sixth drain pipe, so that the sixth drain pipe can be connected to an inlet opening at an outlet opening of the second pumping device, and the third drain pipe can be connected with its outlet opening to an inlet opening of the second pumping device, possibly by means of a multi-way valve.

[0042] To enable cost-effective connection of the first pump unit to the first, second, and third discharge pipes, a multi-way valve can be connected between the first pump unit and the discharge pipes. This valve is connected to a control unit via a switching device. For the purposes of this invention, "connection" also includes any control connection, which can be wireless or wired.In the context of the invention, the control-related connection of the switching device with the valves, such as multi-way valves, can also conventionally be understood to mean, for example, the wireless connection of the switching device with the same, wherein the switching device sends control signals to a receiver device of the multi-way valve or valve, which can energize or not energize the multi-way valve or valve depending on the control signals, also called control signals, the duration of the control signals and / or their encoding, and sends transmission signals to a receiver device of the multi-way valve or valve, which can energize or not energize it depending on the signals, the duration of the control signals and / or their encoding.

[0043] The connection of the switching device with multi-way valves and valves, as defined in the invention, can also include, for example, the supply of electrical current or electrical energy or an electrical control signal to the coil or actuator thereof, or to an on / off switch which in turn sends current to the coil or actuator thereof. The term "switching state," as defined in the invention, can also include the circuit position, switching position, or switching state, such as the open and closed positions of valves and multi-way valves, the on position (like the working position), and the off position (like the rest position) of pump devices, etc. Furthermore, the term "switching state," as defined in the invention, can also include the position of, for example, a valve or a butterfly valve in the open or closed position, which may depend on the aforementioned steps.

[0044] For the purposes of the invention, the term "inlet opening of, for example, the first, pumping device" also includes the possibility that a multi-way valve may be interposed between the inlet opening of the pumping device and, for example, the first and second discharge pipes, the branches of which are connected to the outlet and inlet openings of the same, so that the flow of liquid between the pumping device and the discharge pipes can be controlled or switched by means of the multi-way valve, which is connected to the control device, for example, via a switching device. The same applies analogously to the outlet opening of the first pumping device, the inlet and outlet openings of the second pumping device, and the lines connected to them, such as discharge pipes, inlet pipe, drain, etc.The switching devices of the valves of the multi-way valves and pump devices can be controlled via the control unit connected to the switching devices and can be switched in on or off positions to enable, as required, fluid flow or impermeability between the first pump device and predetermined discharge pipes and / or inlet pipe, and to supply or impermeability to the pump devices with electrical current to initiate pumping or to de-energize them to terminate pumping; the same applies analogously to the second pump device. For the purposes of the invention, the suction side of a pump device also includes the inlet of the pump device through which, for example, fluid is drawn into the pump device; for the purposes of the invention, the pressure side of a pump device also includes the outlet of the pump device through which, for example, fluid is drawn into the pump device.Liquid is conveyed from the pumping device. For the purposes of the invention, the actuation of a valve or multi-way valve into a switching position also means that it is designed or suitable for transitioning to a predetermined switching position or a predetermined switching state, such as from the closed position to the open position or vice versa, such as from the open position to the closed position; for the purposes of the invention, actuation or control of the valve into a switching position or a predetermined switching state also means that the valve transitions from its closed position to its open position or from its open position to its closed position, or is switched or is switched.Several valves or multi-way valves, which can be operated manually but advantageously can also be operated by motor using electric current instead of manually, enable the motorized actuation of the valves or multi-way valves by connecting the valves or multi-way valves with the control or actuators conventionally acting on their closing elements to a switching device automatically according to adjustable specifications of control variables, such as setpoint and actual values.

[0045] The control of the valves or multi-way valves can be effected by the switching device, which can also be called a switching device, e.g., electrical and / or electronic, e.g., by means of electrical lines, so that conventional regulator or actuators move the closing elements in the valves or multi-way valves of the cleaning device according to the invention, so that the valves or multi-way valves switch from one switching state to another; the results of the switching states depend on the location of the connection of the valves or multi-way valves and their resulting functions, such as from the closed to the open position to release the passage opening of the valves or multi-way valves, or from the open to the closed position to shut them off, e.g., to create a liquid-tight seal. For the purposes of the invention, "switching" also includes the setting of the valves or multi-way valves to interrupt or release them.Conventional control actuators and regulating actuators, such as those according to DIN 19226-1, e.g., manual, electric, hydraulic, electromechanical, pneumatic, or combined actuators, are suitable as actuators for the valves or multi-way valves. For the purposes of the invention, "force application" also means that a force acts on the actuator responsible for opening and closing the orifice of a valve or multi-way valve, e.g., mechanically, pneumatically, hydraulically, and / or pneumatically, which is generated manually, by means of a magnetic switch, or optionally by an electric motor.

[0046] For the purposes of this invention, the term "valves" or "multi-way valves" also refers to conventional shut-off or control devices such as pipe switches, gate valves, and butterfly valves. These shut-off and control devices, such as valves, can be designed as gate valves, flaps, cocks, rotary valves, hinged discs, diaphragm valves, teardrop-shaped bodies in pipes, and / or the like. The flow in the shut-off and control devices is shut off by actuating the shut-off device, which can be self-actuated or externally actuated, i.e., by tightly interrupting or blocking the flow path or by opening or releasing it. Changing or controlling the flow in the shut-off and control device by tightly shutting off the valve or multi-way valve or by opening the valve or multi-way valve is dependent on control variables such as timing, duration, presence or absence of electrical current, etc., which can cause the cleaning device according to the invention to transition into the aforementioned and subsequently listed steps or process steps. Switchability or switching, within the meaning of the invention, also refers to the possibility of the valves or multi-way valves transitioning into switching states, such as open and closed positions, wherein these positions depend on the conditions and requirements of the aforementioned and subsequently listed steps, such as process steps; the controllers or actuators of the valves or multi-way valves acting on the closing elements of the valves or multi-way valves and connected to the switching device can preferably be electric motors that can be driven by the application of an electric current, or pneumatically and / or hydraulically operated controllers that move closing elements pneumatically and / or hydraulically as a result of the application of pressure.The controllers or actuators can also be moved manually. For the purposes of this invention, "switchability" or "switching" also refers to the possibility of the pump devices transitioning from the open to the closed position and vice versa, these positions depending on the conditions and requirements of the aforementioned and subsequently listed steps, such as process steps.

[0047] The sediment, coarse material, and / or oily liquid drawn in by the first pumping unit are discharged via an outlet opening of the first pumping unit into a sixth discharge pipe connected to the outlet opening of the first pumping unit. This allows the coarse material, sediment, and / or oily liquid to be conveyed externally, for example, to a wastewater treatment plant, collection tank, or similar facility for processing and / or further treatment. Similarly, the process water in the third chamber can be discharged externally via the sixth discharge pipe.In a particular embodiment of the cleaning device according to the invention, the sixth discharge pipe is also connected to a multi-way valve, which, via a switching device controlled and switched by the control unit, directs the supply of the oil-containing liquid to a sewage treatment plant, but directs the process water to further use in a sewage treatment plant, a collection tank or the like for treatment and / or further processing.

[0048] The cleaning process for the filter system according to the invention also includes, among other things, the following steps: After cleaning the wastewater, such as rainwater resulting from a rainfall event, the first and second chambers can be completely emptied. In the next step, any oily liquid present and floating on the process water in the third chamber can be pumped out. In the further step, the coarse material from the first chamber and the sediment from the second chamber can be pumped out by the first pumping device and discharged to the outside.The process water, freed from any oily liquid present, can then be drawn in via a second pumping device, the outlet of which can be connected to the inlet of a fifth discharge pipe, the inlet of which can be located in the area of ​​the bottom of the third chamber for drawing in the process water, and fed or pumped via an inlet pipe connected to the outlet of the second pumping device into the upper rear area of ​​the second chamber; for example, the overflow channel can be sprayed and cleaned with process water via the outlet openings of the inlet pipe, so that any particles or sediment, such as sludge, that may still be present on the overflow channel then pass into the second chamber via the lamella clarifier.In a further embodiment of the filter system according to the invention, the process water, freed from the oil-containing liquid if present, can also be conveyed to the outside via the second pumping device, the outlet opening of which can be connected to the inlet opening of a drainage pipe, e.g. fourth.

[0049] The inlet pipe can also have outlet openings facing the lamella clarifier, allowing the process water exiting these openings to enter the lamella clarifier and its cavities, thus removing sediment adhering to the lamella clarifier, which then also accumulates on the floor of the second chamber. In a particular embodiment, the outlet openings of the inlet pipe can be equipped with spray nozzles directed into the outlet openings of the lamella clarifier, thereby effectively cleaning the cavities of the lamellae with process water, as if under force. The use of spray nozzles is so effective that the sediment adhering to the inclined surfaces of the interior of the lamella clarifier is also transported towards the bottom of the second chamber.

[0050] In a further embodiment, helical protrusions are formed on the interior of the spray nozzles. These protrusions cause the pressurized process water exiting the spray nozzles to rotate or swirl, thus intensively and reliably impacting the cavities and their surfaces facing the partial flows, e.g., of the lamella clarifier, particularly the inclined surfaces of the cavities where sediment can accumulate. This effectively and reliably removes and cleans the sediment. The rinse water, enriched with sediment, that accumulates in the second chamber can be discharged or pumped out to the outside, possibly into a clarifier, using the first pumping unit and via the sixth discharge pipe connected to the outlet of the first pumping unit.

[0051] With the aid of the reliably operating cleaning device according to the invention, not only are the first chamber and the second chamber, and in particular the lamella clarifier arranged in the second chamber, cleaned, but a high degree of control savings is also achieved. The cleverly interacting components of the reliably operating filter system according to the invention comprise the first pump unit with a first discharge pipe, optionally a second discharge pipe, a third discharge pipe, and a sixth discharge pipe, and the second pump unit with an inlet pipe, optionally a fifth discharge pipe, so that the requirements of the easily manageable filter system according to the invention for a simple design are met, which nevertheless speaks to the reliability of the operation of the reliably operating cleaning device according to the invention and supports its robustness on site. For the purposes of the invention, "pipe" also refers to discharge pipes, inlet pipe, discharge, nozzle, etc.In the context of the invention, "directing" or "draining" also includes pumping, discharging, transporting, feeding, draining, removing, supplying, flowing, etc. In a particular embodiment, as is understandably known to those skilled in the art, valves or multi-way valves are interposed in the discharge pipes and inlet pipe or between them and the pumping devices. These valves can control the flow of wastewater, process water, and liquids into the discharge pipes and inlet pipe by closing or opening them, depending on the requirements of the process steps. This is achieved by actuating the valves and multi-way valves via switching devices that control their positions, such as closed or open. The pumping devices can also be switched on or off by actuating the same switching devices that control their positions, such as closed or open.Depending on the process step, the valves and pumping devices can be switched as a result of, for example, the first pumping device drawing in coarse material, sediment via the first discharge pipe, the third discharge pipe drawing in oily liquid and conveying it to the outside via the sixth discharge pipe connected to the first pumping device, or the second pumping device drawing in process water, e.g., via its inlet opening or the fifth discharge pipe connected to the inlet opening, and conveying it via the inlet pipe connected to the second pumping device to the lamella clarifier, possibly also into the first chamber and / or into the front area of ​​the second chamber.

[0052] In one embodiment of the self-cleaning, reliably functioning filter system according to the invention, an overflow channel, preferably U-shaped in cross-section, is arranged in the flow direction in the area of ​​the outlet openings of the cavities of the lamella clarifier. This channel collects sediment-free wastewater exiting the cavities as process water via the overflow channel walls, which laterally define the overflow channel. Between the top of the lamella clarifier and the overflow channel, partition walls, known as lamella baffles or baffles, can be arranged at right angles to the overflow channel. Preferably, these partition walls are positioned against the top of the lamella clarifier and may have recesses in their upper regions to accommodate the overflow channel. The partition walls are advantageously inclined towards the first chamber.These partition walls can form an angle of less than 90° with the top of the lamella body, such as 40° to 50° or 40° to 90°, preferably 50° to 75°, more preferably 55° to 70° or most preferably 60°, 65° or 70°, wherein the opening of the angle can be oriented towards the first chamber to prevent the inflow of process water into adjacent areas of the lamella body.

[0053] In a further embodiment of the self-cleaning, reliably functioning filter system according to the invention, the interior spaces of the chambers can be inspected and, if necessary, entered by the user via access shafts arranged in the area of ​​the ceiling wall.The two overflow channel walls that laterally delimit the overflow channel can be designed in their upper areas with serrations that taper to a point or a blunt angle towards the bottom, preferably the side walls of the serrations are V-shaped or V-shaped in side view to form spaces between the serrations for the passage of process water from the lamella clarifier through the spaces between the serrations, which are laterally delimited by the side walls, towards the overflow channel and its interior; the overflow channel can have a side opening at its end facing the third chamber for conveying the process water from the overflow channel through the side opening and / or over the upper edge of the third partition wall towards the third chamber.The overflow channel can have at least one or two parallel U-shaped channels in cross-section, sunk or embedded in the overflow channel or its recesses, to which the process water flows laterally, in order to then flow further into the third chamber due to the inclination of the channels and / or the overflow channel.

[0054] In a further embodiment of the self-cleaning, reliably functioning filter system according to the invention, the first chamber is separated from the second chamber in the container by a first partition wall, which is set against the bottom of the container in a liquid-tight manner and is oriented perpendicular to the bottom and / or to a ceiling wall, preferably opposite the bottom and spaced apart from it, forming a free space or opening; an upper edge of the first partition wall facing the ceiling wall of the container can be spaced apart from the ceiling wall, forming a free space between the ceiling wall of the container spaced apart from the bottom and the upper edge of the first partition wall, which is located below the ceiling wall, as an overflow weir or edge for the overflow of wastewater free of coarse material, such as sand or the like, from the first chamber into the second chamber and / or the front area of ​​the second chamber.

[0055] In a preferred embodiment of the self-cleaning, reliably functioning filter system according to the invention, the first partition wall has at least one opening, preferably several openings, in its lower region facing the bottom, from which a baffle wall, preferably movably displaceable to and from these openings, is spaced apart and running parallel to the first partition wall against the bottom, preferably in a liquid-tight manner; a wall-like, preferably semicircularly curved, flow wall guide is attached against the side of the first partition wall facing the second chamber in the region above or over the openings;The flow wall guide can form an angle of less than 20°, advantageously 2° to 15°, preferably 3° to 10° or 4° to 8°, more preferably 2°, 3°, 4°, 5° or 6°, with its opening facing the bottom, and can extend parallel to the first partition wall, as if across the width of the container, i.e. in a transverse direction within the container.

[0056] In a particularly preferred embodiment of the self-cleaning, reliably operating filter system according to the invention, the inlet pipe with the outlet opening arranged at its end is arranged in the second chamber up to the area of ​​the openings for supplying process water via the outlet opening of the inlet pipe, preferably via flushing nozzles of the inlet pipe arranged at the outlet opening, into the area of ​​the openings; the flushing nozzles can be connected to a region of the inlet pipe facing the bottom of the second chamber, preferably spiral internal threads are formed on the interior spaces of the flushing nozzles of the inlet pipe accessible with the interior of the inlet pipe to generate rotary movement of the process water exiting the inlet pipe towards the lamella clarifier and / or towards the opening or openings via the flushing nozzles.

[0057] In a further particularly preferred embodiment of the self-cleaning, reliably functioning filter system according to the invention, the inlet pipe extends at least partially beyond the front upper region of the second chamber into the upper region of the first chamber; the part of the inlet pipe that is located in the front upper region of the second chamber and in the upper region of the first chamber has spray nozzles on its underside and / or topside to rinse the first chamber and / or the second chamber, e.g. its front region, with process water from the third chamber.

[0058] In a particularly preferred embodiment of the self-cleaning, reliably operating filter system according to the invention, the first chamber has an inlet pipe leading from the outside into the chamber, with its outlet opening located in the first chamber and closable, for example, by means of a valve, for introducing wastewater into the chamber for filtration, and / or an outlet pipe leading from the inside to the outside into the third chamber, with its inlet opening located in the third chamber and closable, for example, by means of a valve, for discharging the process water to the outside via its outlet opening during and / or after filtration of the wastewater. The outlet pipe can discharge the process water to the outside by means of a pump device installed therein.Furthermore, in the second chamber, a second partition wall, aligned parallel to and spaced apart from the first partition wall, can be attached to the ceiling wall in a liquid-tight manner; a lower edge of the second partition wall facing away from the ceiling wall is spaced away from the floor, creating a free space between the floor and the lower edge of the second partition wall for wastewater to flow through from a front area of ​​the second chamber towards the rear lower area of ​​the second chamber.

[0059] In one embodiment of the self-cleaning, reliably functioning filter system according to the invention, the rear lower area of ​​the second chamber is separated from the third chamber by a third partition wall which is set against the bottom of the container or the second chamber in a liquid-tight manner, wherein an upper edge of the third partition wall facing the ceiling wall of the container is spaced away from the ceiling wall, forming a free space between the ceiling wall of the container spaced away from the bottom and the upper edge of the third partition wall in order to allow process water exiting the cavities of the lamella clarifier and guided via the overflow channel to flow over the edge towards the third chamber.Furthermore, the lamella clarifier can be set between the rear lower area and the rear upper area of ​​the second chamber with a plurality of parallel, preferably angularly shaped, cavities or tubes laterally bounded by lamella walls for the flow of wastewater from the lower rear area of ​​the second chamber towards the rear upper area of ​​the second chamber for the purpose of sediment settling and migration towards the bottom of the second chamber against the second partition wall and against a third partition wall in a liquid-tight manner.The outlet openings of the lamella clarifier facing the ceiling wall serve to discharge sediment-free process water, while the inlet openings of the lamella clarifier face the bottom of the second chamber for the introduction of wastewater freed of coarse material. Preferably, the overflow channel in the area of ​​the outlet openings of the cavities is aligned parallel to the longitudinal axis X of the tank. The lamella clarifier has a plurality of parallel cavities or tubes, preferably with angular and / or partially or fully circular cross-sections, arranged side by side, preferably within a housing, as a tube assembly.The lamella clarifier is advantageously inclined towards the first chamber or against the flow direction of the wastewater; the central longitudinal axes of the cavities or tubes are inclined, preferably forming an angle with the vertical, the opening of which faces towards the inlet nozzle or bottom, which may be less than 90°, preferably 50° to 65° or 55° to 60°, preferably 50°, 55°, 60° or 65°.

[0060] In one embodiment of the self-cleaning, reliably operating filter system according to the invention, it has a multitude of measuring devices, such as conventional sensors, for determining operating parameters, preferably during filtration and / or after completion of filtration, such as inflow volume, fill levels of wastewater and / or coarse material in the first chamber, of wastewater and / or sediment in the second chamber, as in the front area of ​​the second chamber, of process water in the overflow channel, of process water in the third chamber, of oily liquid floating on the process water level in the third chamber, and / or Flow velocities of wastewater in the first chamber, in cavities of the lamella clarifier, of process water in and / or outside the overflow channel, discharge volume of process water from the second chamber, from the third chamber; preferably the measuring devices can generate signals corresponding to the specific operating parameters and / or forward the signals to a control device, whereby it is possible that the control device compare the signals as actual values ​​with the target values ​​entered into the control unit, generate control signals according to the target values ​​and to forward control signals to pump devices, valves and / or multi-way valves for switching the controlled pump devices into on or off positions and / or the valves and / or multi-way valves, such as their branches, into open or closed positions, The control signals are forwarded to the switching device of the electrically operated valves, which are controlled by control signals, for the purpose of transitioning them from an open to a closed position or from the closed to the open position and / or The control signals are forwarded to a switching device of the electrically operated pumping equipment for the purpose of transitioning it from the working position (= on position) to the rest position (= off position) or from rest to working position.

[0061] It is most preferred if the valves and / or multi-way valves are interposed in the supply nozzle, the discharge nozzle, the discharge, the first discharge pipe, the second discharge pipe, the third discharge pipe, the fourth discharge pipe, the fifth discharge pipe and / or the sixth discharge pipe and / or are arranged at the outlet and / or inlet openings of the pumping devices, wherein these can be switched from open to closed position and vice versa by means of manual actuation and / or by means of a control device and / or the pumping devices (33, 37) can be switched from on to off position and vice versa by means of manual actuation and / or by means of a control device.The pumping devices and valves can, as a result of actuation and / or control, determine the inflows of wastewater into the first chamber, wastewater into the second chamber, process water into the third chamber, and oily liquid from the third chamber to the outside with regard to quantity, volume, duration, and timing. Finally, the container of the self-cleaning, reliably functioning filter system according to the invention can be inclined to provide or assist the flow within it towards the third chamber, so that preferably a longitudinal axis running centrally within the container from the first chamber towards the third chamber, equidistant from the bottom and the top wall, forms an angle of less than 90° with a vertical, such as 89.2° to 89.9° or 89.4° to 89.8°, advantageously 89°, 89.5°, 89.7°, or 89.8°.

[0062] The use according to the invention may include, for example: In working position 1 for emptying the first chamber and / or the second chamber and / or suctioning of coarse material accumulated in the first chamber and / or second chamber, at least the switching of the valve intermediately connected in the supply line nozzle to the closed position, The switching of the first pump unit to the "on" position and the suction of coarse material from the first chamber and / or sediment from the second chamber via the inlet opening of the first pump unit and / or the first discharge pipe, followed by discharge or conveyance to the outside via the sixth discharge pipe, and / or the switching of the second pump unit to the "off" or "on" position for the purpose of supplying process water from the third chamber for conveying process water towards the lamella clarifier for flushing the second chamber or at least a part thereof, preferably the lamella clarifier and / or its cavities, and / or to the outlet openings as flushing nozzles, which are located, for example, at the end of the inlet pipe for cleaning the openings and / or in the first chamber and upper area The flushing pipe arranged in the second chamber is used to clean the first chamber and the front area of ​​the second chamber; In operating position 2 for the discharge of oily liquid floating on the process water surface to the outside, e.g. to the sewage treatment plant, switching of the valve, which is at least partially connected in the supply line nozzle, to the closed position, switching of the first pumping device to the on position and suction via the third discharge pipe and its inlet opening of oily liquid floating on the process water and subsequent discharge to the outside, e.g. to a sewage treatment plant, whereby the second pumping device is switched to the off position; In operating position 3 for flushing the second chamber or at least a part thereof, preferably the lamella clarifier and its cavities, switching a valve interposed at least in the supply pipe to the closed position, switching the second pump unit to the on position and suction via the inlet opening of the second pump unit or the inlet opening of the fifth discharge pipe from the third chamber of process water and supply via the inlet pipe and its flushing nozzles of process water into the area of ​​the upper rear area of ​​the second chamber, the second chamber or at least a part thereof, preferably the lamella clarifier and its cavities, and / or into the openings of the first partition wall and / or, if applicable, into the first chamber and the front area of ​​the second chamber, wherein the first pumping device is switched off; In operating position 4, for emptying the second chamber or suctioning of rinsing fluid accumulated in the second chamber after rinsing, switching at least the valve intermediately connected in the supply line nozzle to the closed position, switching the first pump unit to the on position, and suction via the first discharge pipe of coarse material from the first chamber and / or sediment from the second chamber, followed by discharge via the sixth discharge pipe to the outside; and / or In working position 5 for the filtration of wastewater, switching of the valve connected at least in the supply line nozzle to the open position, switching of the valve connected at least in the discharge nozzle to the open position, switching of pump devices to off positions.

[0063] It is therefore unnecessary to explain further which positions the manually or electronically operated multi-way valves and valves must assume in order to make the aforementioned discharge pipes either fluid-permeable or fluid-impermeable. For example, in step 1, for the purpose of removing coarse material from the first chamber and simultaneously sediment from the second chamber and adjusting the wastewater filtration, the valve in the inlet nozzle must be set to the closed position, and if necessary, the valve in the discharge nozzle must also be set to the closed position. the first pump unit in the on position (= working position), the first discharge pipe in the open position, if applicable the second discharge pipe in the open position, the sixth discharge pipe in the open position for transport to the outside, at least the second pump unit switched to the off position (= rest position) or instead in

[0064] Step 1a. To remove coarse material first from the first chamber and to adjust the wastewater filtration, turn the valve in the inlet to the closed position, and if necessary, turn the valve in the outlet to the closed position. the first pump unit in the on position, the first discharge pipe in the open position, and if necessary, the second discharge pipe in the open position. The sixth discharge pipe is set to the open position for external transport, at least the second pump unit is switched to the off position, and then in step 1b, for the purpose of removing sediment from the second chamber, the valve in the inlet nozzle is set to the closed position, and if necessary, the valve in the discharge nozzle is also set to the closed position. the first pumping unit in the on position, the first discharge pipe in the open position, if applicable the second discharge pipe in the open position, the sixth discharge pipe in the open position for transport to the outside, at least the second pumping unit switched to the off position, In step 2, for the purpose of removing oily fluid, if present, from the third chamber, the valve in the inlet nozzle is set to the closed position, if applicable, the valve in the outlet nozzle is set to the closed position, the first pump unit is set to the on position, the third outlet pipe to the open position, the sixth outlet pipe to the open position for removal to the outside, and at least the second pump unit is switched to the off position. In step 3, for the purpose of flushing the second chamber with the lamella clarifier using process water from the third chamber, the valve in the inlet nozzle is set to the closed position, and if necessary, the valve in the outlet nozzle is also set to the closed position. the first pumping unit in the off position, the second pumping unit in the on position, if necessary the fifth discharge pipe in the open position for drawing process water from the third chamber, the inlet pipe in the open position for transporting process water into the second chamber with lamella clarifier, switched to breakthrough(s), in the first chamber and / or front area of ​​the second, In step 4, for the purpose of pumping out rinse water from the second chamber after cleaning it, put the valve in the inlet nozzle in the closed position, and if necessary, put the valve in the outlet nozzle in the closed position. the first pump unit in the on position, the first discharge pipe in the open position, if necessary the second discharge pipe in the closed position, the sixth discharge pipe in the open position for transport to the outside, at least the second pump unit switched to the off position and / or In step 5, for the purpose of filtering wastewater in the tank, the valve in the inlet nozzle is set to the open position, the valve in the outlet nozzle is set to the open position, The first pump unit is switched to the off position, the second pump unit is switched to the off position.

[0065] In addition, the discharge can also be switched to the open position in steps 1, 1a, 1b and / or 4, provided that the first pump unit is connected to the first discharge pipe and / or the second discharge pipe via the discharge and can be switched to the on position. It is evident that even a single pump unit is sufficient for these steps or operating positions, provided that this pump unit is connected via a sufficiently large number of switchable multi-way valves, which in turn are connected to various discharge pipes.

[0066] The filter system according to the invention can include a lamella clarifier according to DWA A102 as a rainwater treatment system. The filter system according to the invention, which includes the reliably functioning cleaning device according to the invention, can be used to clean rainwater that accumulates on metal roofs, commercial areas, and streets, picking up pollutants, and then, after a brief interruption of the filtration process, to clean the tank or sedimentation tank. From an ecological perspective, it is therefore necessary to treat this rainwater as wastewater before its discharge into a body of water to avoid excessive pollution and damage. Since precipitation does not fall continuously and varies in intensity, it presents a particular challenge.The requirements for the filtration of rainwater, such as wastewater, are therefore defined in regulations such as DWA (German Association for Water, Wastewater and Waste) guideline M153 or DWA worksheets A138 and A166. The filter system according to the invention treats rainwater using a simple and economical method, removing coarse material, sediment, and oily liquid. During sedimentation, the wastewater flows, for example, through the second chamber. Even the coarse material carried along by the rainwater settles in the first chamber. The wastewater flowing from the first chamber, over the first partition, and across the open space (overflow) into the second chamber is then freed from sediment.Some of the sediment settles in the front section of the second chamber, while the remaining sediment in the wastewater is also removed by a lamella clarifier located in the second chamber. The sediment settles on the inclined surfaces of the lamella clarifier's cavities, migrating towards the bottom and sinking out of the bottom-facing inlet openings. In this lamella clarifier, the inclined surfaces of the lamella clarifier allow the sediment to slide off under the force of gravity, forming a sludge trap. This self-cleaning action of the lamellae during filtration supports both the filtration process and the cleaning of the lamella body itself.The filter system according to the invention, including the cleaning device according to the invention, is designed to achieve optimal cleaning performance in accordance with the required parameters. In the inlet area, coarse material from the incoming rainwater settles out as wastewater, and a downstream weir acts as a partition wall. This weir provides hydraulic decoupling between the inlet area and the sedimentation chamber, in this case, the second chamber.

[0067] This results in a uniform flow pattern to the lamellae of the lamella clarifier without significant turbulence in the sedimentation or sludge collection point. Furthermore, this increases the cleaning performance and thus the filtration efficiency of the filter system according to the invention. An access shaft arranged on the second chamber allows access to the second chamber, particularly its front section. The lamella clarifier located in the second chamber can be a monolithic lamella clarifier made of plastic-like materials such as polyethylene (PE) and / or polypropylene (PP) and is advantageously available as a ready-to-install, plug-and-play solution. The hydraulically smooth and light-colored plastic surfaces inside the lamella clarifier facilitate both maintenance and cleaning. Contaminants cannot adhere and sink.Due to the pipe geometry, the sediment flows towards the center of the system, where it can be easily suctioned out. The non-porous surfaces not only prevent deposits but also cause the sediment accumulated on the inclined surfaces to slide towards the bottom of the second chamber. Because the wastewater flowing into the lamella clarifier is divided into numerous partial flows that pass through the lamella clarifier's cavities from its bottom-facing inlet openings towards the top-facing outlet openings, the settling velocity is significantly reduced, so that a short sedimentation time is sufficient to separate the sediment from the wastewater. For the purposes of this invention, "sediment" also includes suspended solids, dirt particles, coagulates, flocs, and / or the like.

[0068] The lamella clarifier can have cavities when viewed from above, with the walls that laterally delimit the cavities being trapezoidal, kite-shaped, rhomboid, rhombus-shaped, rectangular, square, hexagonal, convex, overlapping, concave, honeycomb-like, or composed of mixtures thereof. For the purposes of the invention, a pumping device also includes a device that transports, draws in, and / or extracts process water, wastewater, or other liquid by means of an electrically powered motor or unit; the pumping device can be connected to a switching device, which is controlled by a control unit and switched to an on or off position. The duration and timing of the pumping device's operation can be determined by means of the switching device, which is, for example, a conventional on / off switch.For the purposes of this invention, the term "cavities" also refers to the lamellae of the lamella clarifier. The inclination of the lamellae can form an angle of 30° to 70°, preferably 35° to 65°, more preferably 40° to 60°, and even more preferably 40°, 45°, 50°, 52°, or 10° to 50°, or 20° to 40°, preferably 20°, 25°, 28°, 29°, or 31°, with the horizontal plane, which is oriented at right angles to the vertical plane. The sediment-cleaned wastewater flowing from the outlet openings of the lamella clarifier, now referred to as process water or so-called clean water, is to flow over the upper edge of the third partition wall as an overflow, which forms a free space with the ceiling wall, towards the third chamber. Preferably, the process water flowing from the outlet openings flows towards an overflow channel.The side edges of the overflow channel, which are aligned parallel to the flow direction of the process water towards the third chamber, can have triangular serrations molded onto them, which also contribute to reducing turbulence of the process water. The process water outlet from the discharge openings of the lamella clarifier above the lamellae is advantageously located completely below the process water surface in the rear upper region of the second chamber; the side edges of the overflow channel are also advantageously located below the process water surface of the water exiting the lamella clarifier. In one embodiment of the filter system according to the invention, the process water accumulating in the overflow channel is then directed into the third chamber via a side opening that is laterally bounded by the side edges of the overflow channel.

[0069] The filter system according to the invention can generally be supplied with rainwater from larger drainage areas of a sub-area or the entire catchment area via stormwater drains. For a systematization of central filter systems according to the invention in separate sewer systems, reference is made to DWA-A 166. Specifications and information on the design and equipment of the associated structures can also be found in DWA-A 166, as well as in DWA-M 176 and in DWA Topics T3 / 2013 (DWA 2013).

[0070] The filter system according to the invention is suitable for meeting the requirements of DWA-A 166. This is because the filter system according to the invention is able to retain more heavily contaminated volume fractions of the rainwater [“flush effect”] at the beginning of a rain event. The storage contents are treated after the rain has ended. The effectiveness of the filter system according to the invention is also characterized by the available storage volume, the operating mode, and the treatment of the tank contents during tar removal. The effectiveness can generally be taken into account by applying the verification methods according to Section B. Advantageously, the following considers rainwater retention basins designed as flow-through basins and inclined plate settlers. The efficiency rating for systems approved according to DIBt

[2015] can be based on an efficiency of at least 92% with respect to Millisil W4 [AFS63 content approx. 50%].

[0071] Manually and / or control-operated valves and / or multi-way valves can be interposed between pump units and the first, second, third, fourth, fifth, and / or sixth discharge pipes. For the purposes of this invention, "interposed" also includes the coupling or arrangement of a third device, such as a valve, between two components, such as between a pump unit and a discharge pipe, or devices or a component, such as a valve, within another component, such as a discharge pipe.

[0072] During sedimentation, rainwater flows through the filter system according to the invention. On its way through the filter system, substances that are lighter than water float to the surface, while substances that are heavier sink. Dissolved substances also adhere to the sinking substances and are deposited in the sediment. A prerequisite for sedimentation is that the sedimentation time (settling time) of the suspended solids is shorter than the flow time (residence time). Since the settling velocity of a suspended solid is independent of the structure's height and depends only on the flow rate (e) and the surface area (A = B x L) of the system, the surface loading qA (m / h) was introduced instead of the flow rate (m / h). In lamella clarifiers, lamellae are installed to optimize the sedimentation effect and increase the effective surface area. This measure allows the design flow rate Qbem (max. hydraulic loading) to be increased.Lamella clarifiers of the filter system according to the invention are able to achieve comparable efficiencies with a significantly smaller volume. Additionally, the lamellae or cavities create a directed flow field, and the settling paths of the sediment or particles are considerably shortened. In lamella clarifiers of the filter system according to the invention, these additional effective surfaces are inclined to allow the sediment to slide into the sludge trap under gravitational forces, thus supporting self-cleaning of the lamellae of the filter system according to the invention. In the inlet area, a dip tube or inlet nozzle with a distributor ensures that the incoming rainwater flows uniformly as wastewater towards the downstream weir, which acts as a partition. This weir provides hydraulic decoupling between the inlet area and the sedimentation chamber or second chamber.This results in a uniform flow pattern to the lamellae without significant turbulence in the sludge collection zone and increases the cleaning performance of the filter system according to the invention. The lamella clarifier is statically designed according to local requirements. The access shafts or entry points are equipped with a telescopic pipe and a load distribution plate that can accommodate a conventional BEGU cover up to SLW 50. The telescopic pipe allows for quick adjustment to the installation depth and, together with the load distribution plate, provides a self-leveling cover. The monolithic PP lamella clarifier is a plug-and-play solution, delivered ready for installation on site. The hydraulically smooth and light-colored plastic surfaces inside the lamella clarifier facilitate both maintenance and cleaning.Contaminants cannot adhere to the pipe and, due to the pipe geometry, sink to the center of the system (pipe invert) where they can be easily vacuumed out. The non-porous surfaces not only prevent deposits but also create a "self-cleaning effect" that has a positive impact on maintenance and the system's lifespan.

[0073] The lamella clarifiers require maintenance and cleaning. The DAW A 102 regulations recommend systems that are not subject to continuous stagnation. This means that the operator of a lamella clarifier must regularly send a vacuum truck to empty the system. Furthermore, research shows that sediment accumulates on the lamellae over time, reducing the system's efficiency. In such cases, the installed lamella packs must be replaced. The filter system according to the invention is a three-chamber system. The first chamber is the inlet chamber, which is separated from the second chamber by a weir or a first partition. Here, coarse contaminants are retained as bulk material, and the weir also optimizes the wastewater flow. The second chamber is the sedimentation chamber. Here, the sediment is separated from the wastewater by the lamellae.The third chamber is for the water, which is now free of sediment. The arrangement of the plastic lamellae is of great importance. Unlike conventional products, lamellae are installed to purify the water; for example, the lamellae are installed at 120 degrees to the horizontal x-axis. Above the lamellae are stainless steel skimming channels or overflow channels, which may also have a mounting point for a rinsing device. The third chamber contains two pumps. After a rainfall event, one pump can empty the first and second chambers and also draw water from the top of the third chamber, approximately 15 cm deep, to remove suspended solids. The extracted water is then directed into a drain pipe, such as a wastewater pipe. A second pump uses the clean water from the third chamber to rinse the filter system according to the invention from above.This means that any dirt that may have adhered to the lamellae is flushed down and later pumped back into the wastewater line by the other pump. Water levels and rainfall events are transmitted via sensors to a control unit, which then operates the pumps. Thanks to the clever interaction of the components, the filter system according to the invention is no longer subject to constant waterlogging. It can empty and clean itself. This significantly reduces the need for vacuum trucks and personnel to a minimum.

[0074] The filter system according to the invention is self-cleaning and requires little maintenance. The filter system according to the invention can operate on the principle as follows: 1. Water flows into the first chamber, a. Sensor as a measuring device detects height difference in the inlet nozzle and / or first chamber, 2. Water flows into the second chamber, a. Sensor as a measuring device detects height difference in the second chamber, 3. Water flows through the lamellae of the second chamber's lamella clarifier and is purified. 4. Water flows into the overflow channel(s), 5. Water flows from the overflow channel(s) into the third chamber, a. Sensor as a measuring device detects the height difference in the third chamber, 6. Water flows out of the outlet again, end of the rain event (all chambers full of water), 1. Dry water flows through the inlet, a. Sensor at the inlet detects the height difference of the falling water level and reports it to the control unit, 2. Pump for the first and second chambers empties the chambers after a certain waiting period (approx. 8-10 hours), a. Sensor reports back water level (second chamber empty and therefore also first chamber, as it is smaller), b. Pump stops pumping, 3. Pump for the third chamber receives a signal to start the flushing process, a. Sensor reports water level (third chamber is empty), b. Sensor in second chamber detects new water level, 4. Pump for second chamber pumps out the new water.

[0075] Interruption of the pumping process due to renewed rainfall. Should a new rainfall event begin while the pumps are operating, it is important that the sensor in the inlet nozzle sends a signal to interrupt operation and that the pumps cease their activity.

[0076] Interruption of the waiting period after the end of the rain event by a new rain event: Should a new rain event begin during the waiting period (approx. 8 - 10 hours), the waiting period will also be reset.

[0077] The cleaning device in the filter system according to the invention is characterized, among other things, by low construction costs, the use of prefabricated components, simple pipe designs and pumping devices, low costs for equipping the filter system with the cleaning device, simple regulation and control of the cleaning device in the filter system according to the invention, simplified monitoring of the accumulation of coarse material, sediment, and oily liquid, ease of operation even by an inexperienced user, good accessibility for maintenance work, etc.

[0078] It is also possible that, instead of pumps, the discharge pipes have their outlet openings led and arranged externally from the container, allowing them to be manually controlled and fed from outside the container, or to be operated by means of pumps connected to the outlet openings located outside the container. In a particular embodiment, external pumps—arranged outside the container—can therefore utilize the filter system according to the invention. They do not necessarily have to be located in the third chamber and / or in the first chamber and / or second chamber.

[0079] In a particular embodiment, UV-C emitters can be arranged in the first chamber, second chamber, and / or third chamber and / or in drain pipes, in the inlet pipe, and / or in nozzles to eliminate microorganisms and other pathogens by generating UV-C radiation. Light-emitting diodes and the like can be used for this purpose; light-emitting diodes also include diodes that imitate UV-C radiation, LED emitters, UV-C tubes, UV-C lamps, etc., as defined in the invention. The UV-C radiation has been shown to cause additional covalent cross-linking in the genetic information of bacteria and viruses, thus largely preventing the replication of bacterial genetic material by bacteria as well as the replication of viral genetic material by body cells in the wound.Furthermore, due to UV-C radiation, additional covalent bonds are formed between the individual components and molecules in the genetic material or strands of viruses and bacteria, thus preventing the replication of such genetic material strands of viral or bacterial origin and effectively preventing further occurrence of bacteria and viruses in the wound. For the purposes of this invention, UV-C radiation can also be understood to mean ultraviolet radiation that kills germs such as bacteria, spores, fungi, and / or the like; thus, UV-C radiation for the purposes of this invention can also be understood to mean ultraviolet radiation in the range of 300 nm to 180 nm or 300 nm to 200 nm, preferably 280 nm to 200 nm or 270 nm to 220 nm.UV-C radiation can be generated with conventional emitters, such as UV-C tubes or UV-C lamps or LED emitters, which can also be called UV-C probes.

[0080] The self-cleaning, reliably functioning cleaning device for the filter system according to the invention for filtering wastewater to remove coarse material, sediment, oily liquid and / or the like, with a container having at least three chambers, is characterized in that the first chamber, the second chamber and the third chamber are arranged in series in a flow direction of the wastewater to be filtered, and a first pumping device is arranged in the third chamber. an inlet opening of the first pumping device, preferably via a multi-way valve, is connected to an outlet opening of a second discharge pipe, preferably inlet openings of the second discharge pipe are arranged in the area of ​​a bottom of the first chamber and / or in the front lower area and / or the rear lower area of ​​the second chamber, and / or is connected to an outlet opening of the second drainage pipe, the inlet opening of the first discharge pipe, preferably located in the area of ​​the bottom of the second or third chamber, for emptying the second chamber and / or for suctioning sediment and wastewater accumulated from the first, second and third chambers during operation of the lamella clarifier and / or as a result of rinsing the second chamber or part thereof, in particular the lamella clarifier, is arranged, An outlet opening of the first pumping device is connected to an inlet opening of a sixth discharge pipe for the purpose of conveying coarse material from the first chamber, sediment from the second chamber and / or oily liquid and process water from the third chamber via an outlet opening of the same through the sixth discharge pipe to the outside (70), The inlet opening of the first pump device is connected to an outlet opening of a third discharge pipe, the inlet opening of which, preferably adjustable in height, is arranged in the area of ​​oily liquid floating on the process water surface or at a predetermined height of the process water surface for the extraction of oily liquid floating on the process water surface via the sixth discharge pipe to the outside. and / or In the third chamber, a fourth discharge pipe connected to the first pumping device is arranged, with its height-adjustable outlet opening, which can be closed by means of a valve, for draining oil-containing liquid floating on the process water level from the third chamber to the outside, and its height-adjustable inlet opening for suctioning oil-containing liquid floating on the process water level in the third chamber.

[0081] Furthermore, a second pumping device is arranged in the third chamber of the cleaning device, wherein an outlet opening of the second pumping device is connected to an inlet opening of an inlet pipe for the purpose of flushing the first chamber, the front part of the second chamber and / or the second chamber or at least a part thereof, preferably the lamella clarifier and / or its cavities, and / or an inlet opening of the second pumping device is connected to an outlet opening of a fifth discharge pipe, an inlet opening of the fifth discharge pipe is arranged in the area of ​​the bottom of the third chamber for the intake of process water for the purpose of flushing the second chamber, such as the lamella clarifier;The flushing nozzles can be connected to an area of ​​the inlet pipe facing the bottom of the second chamber or chambers; preferably, an internal thread is formed on an interior of the flushing nozzle accessible to the interior of the inlet pipe to generate rotary motion of the process water exiting the inlet pipe via the flushing nozzles.

[0082] The filter system with the cleaning device comprises at least three chambers, wherein the first chamber is separated from the second chamber by a first partition wall, which is set against the bottom of the container in a liquid-tight manner and is oriented perpendicular to the bottom and / or to a ceiling wall, preferably opposite the bottom. The upper edge of the first partition, facing the ceiling wall of the tank, is set back from the ceiling wall, creating a space between the ceiling wall of the tank (which is set back from the floor) and the upper edge of the first partition wall. This partition wall, located below the ceiling wall, acts as an overflow weir to allow wastewater, free of coarse material such as sand, to flow over the edge from the first chamber into the second chamber and / or the front area of ​​the second chamber. In the first chamber, a supply pipe leading into it from the outside is arranged with its outlet opening, which can be closed, for example by means of a valve, for introducing wastewater into the same for the purpose of filtering it. a discharge nozzle leading from the outside into the third chamber with its inlet opening, which can be closed by means of a valve, arranged in the third chamber for the discharge of the process water via its outlet opening to the outside during and / or after filtration of the wastewater, In the second chamber, a second partition wall, aligned parallel to and spaced apart from the first partition wall, is attached to the ceiling wall in a liquid-tight manner; a lower edge of the second partition wall facing away from the ceiling wall is spaced away from the floor, creating a free space between the floor and the lower edge of the second partition wall for wastewater to flow through from a front area of ​​the second chamber towards the rear lower area of ​​the second chamber. the rear lower area of ​​the second chamber is separated from the third chamber by a third partition wall that is liquid-tight against the bottom of the container or second chamber, Between the rear lower area and the rear upper area of ​​the second chamber, a lamella clarifier with a plurality of parallel, preferably angular, cavities laterally bounded by lamella walls for the flow of wastewater from the lower rear area of ​​the second chamber towards the rear upper area of ​​the second chamber for the purpose of sediment settling and migration towards the bottom of the second chamber or the container is set against the second partition wall and a third partition wall in a liquid-tight manner.

[0083] The outlet openings of the lamella clarifier for the discharge of sediment-free process water are located on the ceiling wall, and the inlet openings of the lamella clarifier for the discharge of wastewater freed from coarse material are located on the floor, and / or The upper edge of the third partition, facing the ceiling wall of the container, is spaced away from the ceiling wall, creating a free space between the ceiling wall of the container (spaced from the floor) and the upper edge of the third partition, in order to allow process water exiting from the outlet openings of the cavities of the lamella clarifier to flow over the edge towards the third chamber. preferably an overflow channel in the area of ​​the outlet openings of the cavities, as on or above them, is arranged to receive sediment-free wastewater exiting from the outlet openings (14b) of the cavities as process water over its lateral overflow edges, preferably designed as V-shaped or V-shaped curved side walls, adjacent to adjacent teeth arranged in a row on the upper side, and conveying the same over its side opening facing the third chamber and / or the upper edge of the third partition wall in the direction of the third chamber.

[0084] Preferably, the cleaning device includes sensors as measuring devices for determining operating parameters, preferably during filtration and / or after completion of the filtration, such as fill levels of wastewater and / or coarse material in the first chamber, of wastewater and / or sediment in the front area of ​​the second chamber, of process water in the third chamber, of oily liquid floating on the process water level in the third chamber, and / or

[0085] Flow velocities of wastewater in the first chamber, in cavities of the lamella clarifier, of process water in and / or outside the overflow channel, preferably the measuring devices generating signals corresponding to the specific operating parameters and / or forwarding the signals to a control device, the control unit compare the signals as actual values ​​with the target values ​​entered into the control unit, generate control signals according to the target values ​​and to forward control signals to pump devices, valves and / or multi-way valves for switching the controlled pump devices into on or off positions and / or the valves and / or multi-way valves, such as their branches, into open or closed positions, The control signals are forwarded to the switching device of the electrically operated valves, which are controlled by control signals, for the purpose of transitioning them from an open to a closed position or from the closed to the open position and / or The control signals are forwarded to a switching device of the electrically operated pumping equipment for the purpose of transitioning it from the working position to the rest position or from rest to the working position.

[0086] In one embodiment, the valves and / or multi-way valves can be interposed in the inlet, outlet, outlet, first outlet pipe, second outlet pipe, third outlet pipe, fourth outlet pipe, fifth outlet pipe, and / or sixth outlet pipe. These valves can be switched from open to closed and vice versa by manual actuation and / or a control device. The pumping devices can also be switched from on to off and vice versa by manual actuation and / or a control device. Advantageously, the pumping devices and valves control the inflows of wastewater into the first chamber, wastewater into the second chamber, process water into the third chamber, and oily liquid from the third chamber to the outside with respect to quantity, duration, and timing.The lamella clarifier has a plurality of parallel, preferably angular and / or partially or fully circular, cavities or tubes arranged side by side, preferably within a housing, as a tube bundle. The lamella clarifier can be inclined in the container towards or against the flow direction of the wastewater. The central longitudinal axes of the cavities or tubes are parallel to each other and inclined towards one another. Preferably, they form an angle with the vertical, the opening of which faces the inlet nozzle, and this angle is less than 90°, preferably 55° to 65°, more preferably 60°. The interiors of the chambers can be inspected by users via access shafts arranged in the area of ​​the ceiling wall or by insertable monitoring devices, such as cameras.The container can also be inclined to provide or assist the flow in the same towards the third chamber, preferably a centrally located chamber equidistant from the bottom and the ceiling wall, so that in the container a longitudinal axis running from the first chamber towards the third chamber can form an angle β less than 5° with a perpendicular, such as 0.2° to 1°, 0.3° to 4°, 0.3° to 2°.

[0087] In operating position 1, for emptying the first chamber and / or the second chamber and / or suctioning out coarse material accumulated in the first chamber and / or second chamber, at least the valve installed in the inlet nozzle is in the closed position, the first pump unit is switched to the ON position and suctions out the coarse material with remaining wastewater from the first and second chambers via the first discharge pipe, and possibly also from the first chamber via the second discharge pipe, whereby the second pump unit may be switched to the OFF position; in operating position 2, for discharging oily liquid floating on the process water surface to the outside, e.g.At least the valve in the inlet pipe is in the closed position, the first pump unit is in the on position, and the oily liquid floating on the process water is carried to the outside via the third discharge pipe, e.g.into a sewage treatment plant, wherein the second pumping device is switched to the off position; in operating position 3 for flushing the second chamber or at least a part thereof, preferably the lamella clarifier and its cavities, at least the valve interposed in the supply line nozzle is switched to the closed position, the second pumping device is switched to the on position and draws the process water from the third chamber via the fifth discharge pipe or directly via its inlet opening and conveys the process water via the inlet pipe into the area of ​​the upper rear area of ​​the second chamber or at least a part thereof, preferably the lamella clarifier and its cavities, if necessary.the first chamber, the front area of ​​the second chamber and / or the openings in the first partition, wherein the first pumping device (33) is switched to the off position; in another operating position, such as 4, for emptying the second chamber or for suctioning up rinsing fluid accumulated in the second chamber after rinsing, at least the valve interposed in the supply nozzle is switched to the closed position, the first pumping device is switched to the on position and suctions the rinsing fluid from the first chamber and / or from the front area and / or the rear lower area thereof via the first discharge pipe, wherein the second pumping device may be switched to the off position. Examples of implementation

[0088] Due to a simplification of the drawings, they show schematically and in a highly enlarged manner, sometimes only a few features, without claiming to be a scaled and complete representation of the invention. Fig. 1 a schematic drawing of the filter system according to the invention as a longitudinal section without pumping equipment, Fig. 2 a schematic drawing of the filter system according to the invention as a longitudinal section with pumping devices and with flow information of wastewater and process water in chambers and pipes as arrows, Fig. 3 a schematic drawing of the filter system according to the invention as a longitudinal section with first chamber, front area of ​​the second chamber, Fig. 4 a schematic drawing of the filter system according to the invention as a longitudinal section with the first chamber and the front area of ​​the second chamber, Fig. 5 a schematic drawing of the filter system according to the invention as a longitudinal section with the rear area of ​​the second chamber and the third chamber, Fig. 6 a schematic drawing of the filter system according to the invention as a longitudinal section with the lower area of ​​the first partition wall and Fig. 7 A rear view of the overflow channel from the third chamber.

[0089] The self-cleaning, reliably functioning filter system according to the invention for filtering wastewater, such as rainwater, for removing coarse material, sediment, oily liquid and / or the like, comprises a container 1a accommodating at least three chambers 1, 2, 3, wherein the first chamber 1, the second chamber 2 and the third chamber 3 are arranged extending along the longitudinal axis X of the container in a flow direction 92 of the wastewater to be filtered. For the purposes of the invention, longitudinal axis X also refers to the axis equidistant from the bottom 44, the top wall 5 and the side walls of the container 1a, which can extend parallel to these.

[0090] For the purposes of the invention, the term "chambers 1, 2, 3 arranged one behind the other" also includes those in which the two adjacent or mutually adjacent chambers 1 and 2 on the one hand, or 2 and 3 on the other, may each have a common partition, such as a first partition 7 for the first and second chambers 1 and 2, a third partition 16 for the second and third chambers 2 and 3, and a common opening, such as a free space 8 for the first and second chambers 1 and 2, or 17 for the second and third chambers 2 and 3; the free space 8 between the first and second chambers 1 and 2 may be laterally bounded by the first partition 7 arranged in the lower area facing the bottom 44 of the container 1a between the first and second chambers 1 and 2 and the ceiling wall 5 and the two opposite side walls 1b of the container 1a and / or the free space 17 between the second and third chambers 2,3 can be laterally bounded by the area of ​​the partition 16 located between the second and third chambers 2, 3, facing the bottom 44 of the container 1a, and by the ceiling wall 5 and the two opposite side walls 1b of the container 1a. The chamber 2 is subdivided into a front area 45 facing the inlet nozzle 4 and a rear area facing the outlet nozzle 19, which are at least partially separated from each other by a second partition 11.The upper section of the container 1a, facing away from the bottom 44, is positioned against the ceiling wall 5, forming an opening or free space 12; the opening 12 may be laterally bounded by the partition 11 located in the upper section of the container 1a or chamber 2, the bottom 44, and the opposite side walls of the container 1a. The inlet 4 with its outlet opening and the outlet 19 with its inlet opening are located in the upper section 25 of the container 1a.

[0091] A first pumping device 33 is arranged in the lower region 26 of the third chamber 3, the inlet opening of which is connected via a tubular discharge and / or a multi-way valve (not shown) actuated or switched by means of a control device to an outlet opening of a first discharge pipe 30, the inlet opening 35 of which is arranged in the region of the bottom 44 in the lower rear region 46 of the second chamber 2 for emptying the second chamber 2 and / or the first chamber 1 and also for suctioning sediment accumulated in the second chamber 2 from the wastewater, e.g. during operation of the lamella clarifier 15 and / or as a result of rinsing the second chamber 2 or a part thereof, in particular the lamella clarifier 15, and coarse material, such as sand or the like, accumulated in the first chamber 1 and / or in its region 45 of the second chamber 2 from the wastewater.Its inlet opening can also be connected via a tubular discharge and / or a multi-way valve (not shown) operated or switched by means of a control device to an outlet opening of a second discharge pipe 31, the inlet opening 35 of which is arranged in the area of ​​the bottom 44 in the first chamber 1 for emptying the first chamber 1 and thus for extraction of contents in the first chamber 1.

[0092] An outlet opening of the first pumping unit 33 is connected to an inlet opening of a sixth discharge pipe 34 for the discharge of coarse material from the first chamber 1, sediment from the second chamber 2, oily liquid, and process water from the third chamber 3 via an outlet opening 36 of the same to the outside 70, for example, for treatment in a wastewater treatment plant. The inlet opening of the first pumping unit 33 can also be connected via a multi-way valve (not shown) actuated or switched by a control device to an outlet opening of a third discharge pipe 60, and its inlet opening 60a can be located in the area of ​​oily liquid floating on the process water or at a predetermined height of the process water level, if necessary.The third chamber 3 is arranged in a height transverse to the longitudinal axis X, adjustable and adjustable, for the discharge of oil-containing liquid floating on the process water surface at a predetermined height to the outside 70. In another embodiment, a fourth discharge pipe with its height-adjustable outlet opening, which can be closed by means of a valve, such as a multi-way valve, is optionally additionally arranged on the first pumping device 33 for the discharge of oil-containing liquid floating on the process water or its surface from the third chamber 3 to the outside 70.

[0093] A second pumping device 37 is arranged in the third chamber 3, the inlet opening of which is located in the area of ​​the bottom of the third chamber 3. This pumping device may be connected, via a valve operated or switched by a control device, such as a multi-way valve (not shown), to an outlet opening of a fifth discharge pipe 40, the inlet opening 41 of which is located in the area of ​​the bottom 44 of the third chamber 3 for the purpose of drawing process water from the third chamber 3 for rinsing the second chamber 2, including the lamella clarifier 15, for example, in an area of ​​the third chamber 3 adjacent to the third partition wall 17. An outlet opening of the second pumping device 37 is, if applicable,A valve, such as a multi-way valve (not shown), is connected to an inlet opening of an inlet pipe 49 via a control device operated or switched by means of a control device for the purpose of flushing the second chamber 2 or at least a part thereof, preferably the lamella clarifier 15 or its cavities 14 or tubes 14. Flushing nozzles 54 are connected to a region of the inlet pipe 49 facing the bottom 44, preferably having internal threads formed on their inner spaces connected to the interior of the inlet pipe 49 to generate rotation or swirl of the process water exiting the inlet pipe 49 via the flushing nozzles 54. The interiors of chambers 1, 2, and 3 can be inspected via access shafts 23 arranged in the upper region 25 of the container 1a. For the purposes of this invention, "valve" can also refer to a multi-way valve, a three-way valve, or a four-way valve.

[0094] The filter system according to the invention is suitable for continuous operation, such as cleaning or regeneration, of wastewater, such as rainwater, coarse material, sediment, oily liquid and / or the like. It comprises a container 1a with at least three chambers 1, 2, 3, wherein the first chamber 1 is separated from the second chamber 2 by a first partition 7, which is set against the bottom 44 of the container 1a in a liquid-tight manner and is oriented perpendicular to the bottom 44 and / or to a ceiling wall 5. In the second chamber 2, a second partition 11, which is oriented parallel to the first partition 7, is set against the ceiling wall 5 in a liquid-tight manner.The first chamber 1 is the first settling zone for the settling of coarse material from the liquid supplied via the inlet nozzle 4, such as wastewater, and / or the second chamber 2 is the second settling zone for the settling of sediment, such as suspended solids, sludge, or the like, from the wastewater freed of coarse material supplied from the first chamber 1; the third chamber 3 is provided for receiving sediment-free wastewater as process water and conveying it to the outside 70. A lamella clarifier 15 is installed liquid-tight against the second partition 11 and the third partition 16.

[0095] A second drainage pipe 31, preferably accessible from the outside and equipped with an inlet opening 35, preferably located in the area of ​​the bottom 44 of the first chamber 1, for emptying the first chamber 1 or for suctioning coarse material, such as sand or the like, that has accumulated in the first chamber 1, to the outside 70 can also be provided.

[0096] A first discharge pipe 30, provided with its inlet opening 32, preferably arranged in the area of ​​the bottom 44 of the second chamber 2 and / or the front area 12 and / or the lower rear area 46 thereof, for emptying the second chamber 2 or suctioning sediment accumulated in the second chamber 1 during operation of the lamella clarifier 15 and / or as a result of flushing the second chamber 2 or part thereof, in particular of the lamella clarifier 15, to the outside 70, a third discharge pipe 60, provided with its inlet opening 60a, preferably in the area of ​​oily liquid floating on the process water or at a predetermined height of the liquid level of the process water, for the discharge of oily liquid floating on the liquid level of process water to the outside 70 are connected to inlet openings of a first pumping unit or to inlet openings of a multi-way valve connected to the first pumping unit. An inlet pipe 49 connected to the outlet opening of the second pumping unit leads to the second chamber 2, the outlet openings of which are arranged on, above, or above and / or next to the overflow channel 71 and / or above the outlet openings 14b of the lamella clarifier 15, for flushing the second chamber 2 or a part thereof, such as the lamella clarifier 15, by means of the process water from the third chamber 4 3. The preferably U-shaped overflow channel 71 can have two parallel U-shaped channels 71a recessed into the overflow channel, into which the process water from the lamella clarifier flows.In another embodiment, the inlet pipe 49 can extend to the first chamber 1, so that not only the lamella clarifier 15, but also the first chamber 1 and at least the front section 45 of the second chamber 2 can be flushed with process water via the inlet pipe 49 and its flushing nozzles. Additionally, the inlet pipe can extend with its end 49a to the opening(s) 95 arranged in the lower section 26 of the first partition 7, in order to flush the openings with process water via the outlet nozzles 49b located at its end 49a, which are designed as flushing nozzles 54. Valves can be interposed in the inlet pipe 49 to determine the location of the flushing by means of the flushing nozzles 54 of the inlet pipe 49.

[0097] An upper edge 9 of the first partition 7, facing the ceiling wall 5 of the container 1a, is spaced away from the ceiling wall 5, forming a free space 8 between the ceiling wall 5 of the container 1a (spaced from the floor 44) and the upper edge 9 of the first partition 7. This space acts as an overflow weir, allowing wastewater freed from coarse material, such as sand or the like, to flow over the edge 9 from the first chamber 1 (first settling zone) into the second chamber 2 (second settling zone), or at least into the front area 45 of the same. A supply pipe 4, leading from the outside 70 into the first chamber 1, opens into the first chamber 1 with its outlet opening 20 for introducing wastewater into the chamber during operation of the filter system according to the invention and filtration of the wastewater.The first chamber 1 is designed as a first settling zone for the settling of coarse material, the second chamber 2 as a second settling zone for the settling of sediment, such as suspended solids, sludge, or the like, and the third chamber 3 for receiving sediment-free wastewater as process water and conveying it to the outside 70. In the second chamber 2, a second partition 11, aligned parallel to the first partition 7, is attached against the ceiling wall 5. A lower edge 13 of the second partition 11, facing away from the ceiling wall 5, is spaced from the floor 44, forming a free space 12 between the floor 44 and the lower edge 13 of the second partition 11 for the flow of wastewater from a front area 45 of the second chamber 2 to the rear lower area 46 of the second chamber 2.

[0098] In one embodiment, the container 1a or the overflow channel 71 can be inclined so that, for example, the process water can flow on the overflow channel 71 in the direction of the third chamber 3.Between the rear lower section 46 and the rear upper section 47 of the second chamber 2, a lamella clarifier 15 is arranged with a plurality of parallel cavities 14, laterally bounded by lamella walls, for the flow of wastewater in partial flows from the lower rear section 46 of the second chamber 2 towards the rear upper section 47 of the second chamber 2 for the purpose of sediment settling and migration towards the bottom 44 against the second partition wall 11 and the third partition wall 16, wherein the outlet openings 14b of the third partition wall 15 are directed towards the ceiling wall 5 for the discharge of sediment-free process water and the inlet openings 14a of the third partition wall 16 for the discharge of wastewater freed from coarse material towards the bottom 44.The rear lower area 46 of the second chamber 2 is separated from the third chamber 3 by a third partition 16, which is set against the bottom 44 of the container 1a in a liquid-tight manner and runs parallel to the second partition 11. An upper edge 18 of the third partition 16 facing the ceiling wall 5 of the container 1a is spaced away from the ceiling wall 5, forming a free space 17 between the ceiling wall 5 of the container 1a, which is spaced away from the bottom 44, and the upper edge 18 of the third partition 16.

[0099] An overflow channel 71 is arranged in the area or at the level of the outlet openings 14b of the cavities 14 to receive sediment-free wastewater exiting the outlet openings 14b as process water via its lateral overflow edges 51, on which triangular or semicircular prongs 50 may be formed in the upper area, and to convey it via its side opening 52 facing the third chamber 3 and the upper edge 18 of the third partition wall 16 towards the third chamber 3. In the third chamber 3, a discharge nozzle 19 leading into it from the outside 70 opens with its inlet opening 21, which can be closed, for example, by means of a valve (not shown), to discharge the process water to the outside via its outlet opening 19a. Conventional measuring devices 53, such as sensors, can measure operating parameters such as fill levels, volumes, density, etc.of wastewater in first chamber 1, of wastewater in the front area 45 and / or rear lower area 46 and / or rear upper area 47 of the second chamber 2, of process water in the third chamber 3, of oily liquid floating on the process water in the third chamber 3 and / or of process water in the third chamber 3, coarse material in first chamber 1, sediment in front area 45, rear lower area 46 and / or rear upper area 47 of the second chamber 2, flow velocities of wastewater in the first chamber 1, in cavities 14 of the lamella clarifier 15, of process water in the overflow channel 71, of coarse material and / or sediment in the third chamber (3), determine and generate signals corresponding to these operating parameters and the signals, e.g.via a transmitting device to a control device which compares the signals as actual values ​​with the setpoints entered into the control device, generates control signals according to the setpoints and forwards the control signals to, for example, switching devices of pump devices and / or valves and multi-way valves that can be operated by means of control signals, for the purpose of controlling them in switching positions, such as off or on positions of the pump devices 33 and 37 and closed and open positions of the valves and multi-way valves.As a result of the control signals to switching devices, such as on / off switches, electrically operated valves and multi-way valves, their predetermined branches can transition from the open to a closed position or from the closed to the open position; the control signals are also forwarded to switching devices, such as on / off switches, of electrically operated pumping devices for the purpose of transitioning them from the open to the closed position or from the closed to the open position. Depending on the requirements or specifications of the process steps or stages, conventional valves or multi-way valves known to those skilled in the art are connected via their branches in the inlet 4, the outlet 19, the outlet, the first outlet pipe 30, the second outlet pipe 31, the third outlet pipe 60, the fourth outlet pipe, fifth outlet pipe 40 and / or sixth outlet pipe 34, etc.Interposed for manual control and switching by an external user, or via the control device using conventional switching devices known to those skilled in the art, for opening and closing the conventionally operated valves; the pump devices 33, 37 are controlled by control devices, e.g., via conventional switching devices known to those skilled in the art, and switched to the on or off position. The valves and multi-way valves (not shown) determine the flows of wastewater into the first chamber 1, of coarse material from the first chamber 1 to the outside, and of sediment from the second chamber 2 to the outside, of wastewater into the second chamber 2, of process water from the third chamber 3 into the second chamber 2 and from the third chamber 3 to the outside, of oily liquid from the third chamber 3 to the outside, etc., with regard to quantities, duration, and times.

[0100] The lamella clarifier 15 has a plurality of parallel cavities 14 or tubes 14, arranged side by side, e.g., with angular and / or partially or fully circular cross-sections, which are inclined or whose surfaces facing the bottom are inclined to allow sediment to settle. These are preferably arranged in a housing as a tube assembly. The lamella clarifier 15, which is oriented with a sufficient inclination, or at least the surfaces of the cavities 14 facing the partial flows and the ceiling wall, are oriented with a sufficient inclination and through which the wastewater flows in partial flows, so that the sediment sinks onto these surfaces in the cavities 14 towards the bottom 44 and is able to settle there.

[0101] The inflow of wastewater through the inlet openings 14a of the cavities 14 or the tubes 14 facing the floor 44 and the outflow of sediment-free wastewater as process water through the outlet openings 14b of the cavities 14 or the tubes 14 facing away from the floor 44, i.e., on the floor side, takes place in the direction of an overflow channel 71 for the purpose of settling the sediment onto the aforementioned surfaces and migration of sediment from there towards the floor 44 of the rear lower area 46 of the second chamber 2. Due to the inclination of the cavities 14, the central longitudinal axis A of the cavities 14 or tubes 14 can form an angle of less than 90°, such as 60°, with the horizontal, which is oriented at a right angle to the vertical.

[0102] In operating position 1 of the filter system according to the invention with a self-cleaning, reliably functioning cleaning device for emptying the first chamber 1 and / or second chamber 2 or for suctioning coarse material, such as sand or the like, that has accumulated in the first chamber 1 and / or second chamber 2, at least the valve interposed in the supply line nozzle 4 arranged in the upper area 25 is switched to the closed position, the first pumping device 33 is switched to the on or working position and suctions the coarse material from the first chamber 1 and the sediment from the second chamber 2 via the first discharge pipe 30 leading into the second chamber 2 or only via its inlet opening and / or the coarse material from the first chamber 1 via the second discharge pipe 31 which also leads into the first chamber 1, wherein the second pumping device 37 is switched to the off or rest position.

[0103] In operating position 1 of the self-cleaning, reliably functioning cleaning device according to the invention for emptying the first chamber 1 and / or second chamber 2 or for suctioning coarse material, such as sand or the like, that has accumulated in the first chamber 1 and / or second chamber 2, at least the valve interposed in the supply line 4 is switched to the closed position, the first pumping device 33 is switched to the on or working position and first suctions the coarse material from the first chamber 1 via the first discharge pipe 30 connected to the first pumping device 33 by means of a multi-way valve and then or simultaneously suctions the sediment from the second chamber 2 via the second discharge pipe 31 connected to the first pumping device 33 by means of a multi-way valve, whereby the second pumping device (37) is switched to the off or rest position.

[0104] In operating position 2 for the discharge of oily liquid floating on the liquid or process water surface to the outside 70, e.g. to the sewage treatment plant, at least the valve interposed in the supply pipe 4 can be switched to the closed position, the first pumping device 33 can be switched to the on or working position and discharge the oily liquid floating on the process water to the outside 70, e.g. to a sewage treatment plant via the third discharge pipe 60, whereby the second pumping device 37 is switched to the off or standby position.

[0105] In operating position 3 for flushing the second chamber 2 or at least a part thereof, preferably the lamella clarifier 15 or its cavities 14, at least the valve interposed in the supply line 4 can be switched to the closed position, the second pumping device 37 can be switched to the on or operating position, and the process water can be drawn in via the fifth discharge pipe 40 from the third chamber 3 or directly via the inlet opening of the second pumping device 37 and supplied via the inlet pipe 49 to the upper rear area 47 of the second chamber 2 or at least a part thereof, preferably the lamella clarifier 15 or its cavities 14, with the first pumping device 33 being switched to the off or standby position.The service water can also be pumped via the inlet pipe 49 into the upper area 25 of the first chamber 1 and / or to the openings 95 located in the lower area 26 of the first partition wall 7 for the purpose of flushing.

[0106] In working position 4 for emptying the second chamber 2 or for suctioning up rinsing fluid accumulated in the second chamber 2 after rinsing in working position 3, at least the valve interposed in the supply line 4 can be switched to the closed or open position, the first pumping device 33 can be switched to the on or working position, and the rinsing fluid can be suctioned from the chamber 2 or from the front area 45 and the rear lower area 46 thereof and / or via the second draining pipe 31 via the first discharge pipe 30, with the second pumping device being switched to the off or standby position.

[0107] The filter system according to the invention is a three-chamber system; the lamella clarifier is statically designed according to local requirements. The access points are equipped with a telescopic pipe and a load distribution plate that can accommodate a standard BEGU cover up to SLW 60. The telescopic pipe allows for quick adjustment to the installation depth and, together with the load distribution plate, provides a self-leveling cover. The monolithic polypropylene (PP) lamella clarifier is a plug-and-play solution that can be delivered to the construction site ready for installation. The hydraulically smooth and light-colored plastic surfaces inside the lamella clarifier facilitate both maintenance and cleaning. Contaminants cannot adhere and, due to the pipe geometry, sink to the bottom of the second chamber, where they can be easily pumped out.The non-porous surfaces not only prevent deposits, but also create a self-cleaning effect, which has a positive impact on the maintenance and lifespan of the filter system.

[0108] The first chamber is the inlet chamber, which is separated from the second chamber by a partition wall, also called the first partition wall or weir. Here, coarse debris, such as large materials, is trapped, and the partition wall, acting as a weir, further optimizes the flow of the wastewater. In the inlet area, a dip tube with a distributor ensures that the incoming rainwater flows evenly towards the downstream weir. This weir creates a hydraulic separation between the inlet area and the sedimentation chamber.

[0109] This results in a uniform flow pattern to the lamellae without significant turbulence in the sludge collection zone and increases the cleaning performance of the filter system according to the invention. Chambers one and two are connected by a small opening to allow for subsequent suction. The opening is secured by an upstream baffle. Chamber two is the sedimentation chamber. Here, the sediment separates from the water thanks to the lamellae. Chamber three is for the water that has been freed of sediment.

[0110] The arrangement of the plastic louvers is of great importance, unlike other products that use louvers to purify water.

[0111] An inlet nozzle or supply line nozzle can be installed, which has a sensor window, e.g. for measurements, an inspection opening, e.g. for camera inspections of supply line nozzles, first chamber as well as testing for cleaning possibilities and requirements, and of flow distributors, such as submerged walls, penetrations, etc.

[0112] The lamellae can be oriented at 120° to the horizontal X-axis or longitudinal X-axis, i.e., against the flow direction; this increases the sedimentation performance.

[0113] Above the louvers are clear water / skimmer channels with a special cut (curved V-shapes). The water, cleaned by the louvers, flows over the special serrated weir, which ensures a uniform and full-surface overflow into the clear water / skimmer channels. The clear water / skimmer channels also have a mounting point for the flushing device.

[0114] The flushing lines, including the plastic inlet pipe, which are installed in both the first and second chambers (also called chamber one and chamber two), feature special spray heads that are virtually clog-free due to their material (PP) and spiral design. Flushing of the first and second chambers takes place above the level of the fins; the second chamber is also flushed at floor level on the inlet side.

[0115] To prevent a rotational flow above the louvers, louvered baffles are installed. The already purified water, also called process water, cannot turbulence and is discharged in the respective area via the clear water / skimmer channels into chamber three.

[0116] To prevent turbulence of the already settled sediments in the bottom area of ​​the second chamber, a flow guide, also called a flow wall guide, can be installed downstream of the overflow weir. The second and third chambers also have measuring devices, such as sensors, in the inlet and outlet areas of the lamellae. In the third chamber, in addition to the two pumps, there is the suction device for the light liquids and the submerged outlet nozzle, also called the discharge nozzle. Under normal operating conditions, the outlet nozzle prevents the separation of the light liquids into the receiving water body.

[0117] A pump, also called the first pumping unit, empties the first and second chambers after a rain event. Additionally, the process water in the third chamber is drawn from the top by approximately 15 cm to remove light liquids, suspended solids, and sediment. The extracted process water is then directed into a wastewater pipe or separate container. A second pump, also called the second pumping unit, uses the already cleaned process water from the third chamber to flush the other two chambers. This means that any dirt that may have adhered to the lamellae is flushed down and subsequently extracted by the first pump. The sustainability of the filter system according to the invention is ensured by the complete use of the 100% recyclable material "polypropylene" (container, plates, lamellae, flushing nozzles, etc.). The electrical and electronic components, such as those mentioned above, are also recyclable.Pumps, sensors, electrical wiring, control and switching devices, etc., can be remanufactured using standard methods. Due to the manufacturing process, compact prefabricated design, low weight, ease of transport, and convenient installation, the ecological and CO2 footprint is low. Water levels and rainfall events are transmitted via measuring devices, such as sensors, to a control unit, which then controls the pumping equipment. Thanks to this clever design, the filter system according to the invention no longer experiences permanent stagnation, as required by DWA A L02. It can empty and clean itself, and its digitalization allows for continuous monitoring. In principle, the filter system according to the invention is therefore completely maintenance-free; furthermore, the two access shafts, acting as entry domes, allow the user to inspect all areas on-site. Reference symbol list 1 first chamber 1a Container 1b Container wall 2 second chamber 3 third chamber 4 supply ports 5 Ceiling wall 7 first partition wall 8 Free space 9 Edge of the first partition wall, upper side, facing the ceiling wall 11 second partition wall 12 Free space 13 Edge of the second partition wall, lower, facing the floor 14 Cavity, tube of lamellar clarifier 14a Inlet opening of lamellar clarifier, cavity, tube thereof 14b Outlet opening of lamella clarifier, cavity, tube thereof 15 lamella clarifiers 15a Top side of lamella clarifier 16 third partition wall 17 Free space 18 Edge of the third partition wall, upper one, facing the ceiling wall 19 drainage nozzles 19a Outlet opening located outside of container 20 Outlet opening of supply pipe 21 Inlet opening of drainage nozzle 23 Access shaft 24 upper area of ​​overflow channel wall, top side 25 upper area 26 lower area 30 first drainage pipe 31 second drain pipe 32 Inlet opening of the first drainage pipe 33 first pumping unit 34 sixth drain pipe 35 Inlet opening of the second drainage pipe 36 Outlet opening of sixth discharge pipe arranged outside of container 37 second pumping unit 40 fifth drain pipe 41 Inlet opening of fifth discharge pipe, of second pumping unit 44 Bottom of container, first, second, third chamber 45 anterior region of the second chamber 46 posterior lower region of the second chamber 47 rear upper area 49 Inlet pipe 49a End of the inlet pipe 49b Outlet opening of the end of the inlet pipe 50 points on the overflow channel wall, point on the overflow edge with V-shaped or V-shaped curved side walls 50a Toothed space for the passage of wastewater from the lamella clarifier towards the overflow channel 50b Side wall of spike 51 lateral overflow edge 52 Side opening of overflow channel facing the third chamber 53 Measuring device 54 Flushing nozzle of inlet pipe with flushing area 60 third drain pipe 60a Inlet opening of third drain pipe 70 outside, on the outside 71 Overflow channel 71a Overflow channel wall 71b Domestic water channel, overflow channel recessed or sunken 92 Flow direction of wastewater and process water through chambers, such as from inlet nozzle to outlet nozzle 93 partition walls as so-called lamellar bulkheads 95 Breakthrough 96 Diving wall 97 Flow wall guide A center longitudinal axis of a cavity The longitudinal axis of the container is equidistant from the ceiling wall and the floor and runs parallel to them.

Claims

[1] Filter system for filtering liquids of coarse material, sediment, oily liquid and / or the like, comprising a container (1a) with at least three chambers (1, 2, 3) and pumping devices (33, 37) arranged in the third chamber (3), characterized by , that a. the first chamber (1), the second chamber (2) and the third chamber (3) are arranged in series one after the other in a flow direction (92) of the wastewater to be filtered, b. an inlet opening of a first pumping device (33) is connected as a suction side to an outlet opening of a first discharge pipe (30) and / or a second discharge pipe (31), c. an inlet opening (32) of the first drain pipe (30) for emptying the first chamber (1) and the second chamber (2) is arranged in the area of ​​a bottom (44) of the second chamber (2), d. an outlet opening of the first pumping device (33) is connected as the pressure side to an inlet opening of a sixth discharge pipe (34) for the discharge of wastewater containing coarse material from the first chamber (1), wastewater and / or sediment and wastewater containing sediment from the second chamber (2) and / or oily liquid and / or process water from the third chamber (3) via an outlet opening (36) of the sixth discharge pipe (34) to the outside (70), e. an inlet opening of the first pumping device (33) is connected as a suction side to an outlet opening of a third discharge pipe (60), the inlet opening (60a) of the third discharge pipe (60) is arranged or adjustable in the area of ​​oily liquid floating on the process water surface or at a predetermined height of the process water surface for the extraction of oily liquid floating on the process water surface via the sixth discharge pipe (34) to the outside (70), f. an inlet opening (41) of a second pumping device (37) as a suction side in the area of ​​the bottom (44) of the third chamber (3) for drawing in process water for flushing the second chamber (2) or the inlet opening (41) of the second pumping device (37) is connected to an outlet opening of a fifth discharge pipe (40), wherein an inlet opening (41) of the fifth discharge pipe (40) is arranged in the area of ​​the bottom (44) of the third chamber (3) for drawing in process water from the third chamber (3) and flushing the second chamber (2) with the process water, g. an outlet opening of the second pumping device (37) is connected as a pressure side to an inlet opening of a supply pipe (49) for the purpose of conveying the process water and flushing the second chamber (2) or at least a part of it and / or the first chamber (1) and / or the front area of ​​the second chamber (2). [2] Filter system according to claim 1, characterized by, that an overflow channel (71) extending in the direction of flow (92) in the area of ​​outlet openings (14b) of cavities (14) of a lamella clarifier (15) arranged in the second chamber (2) is arranged to receive wastewater freed of sediment exiting from the outlet openings (14b) of the cavities (14) as process water via their overflow channel walls (71a) which laterally limit the overflow channel (71). [3] Filter system according to claim 2, characterized by , that in order to prevent the inflow of process water into adjacent areas of the lamella clarifier (15), intermediate walls (93) are arranged as so-called lamella bulkheads between the top (15a) of the lamella clarifier (15) and the overflow channel (71) at right angles to the overflow channel (71). [4] Filter system according to claim 2 or 3, characterized by, that the two overflow channel walls (71a) which laterally delimit the overflow channel (71) are formed in their upper areas (24) with teeth (50) that taper sharply or bluntly towards the bottom (44) as overflow edges (51). [5] Filter system according to any of the preceding claims, characterized by, that the first chamber (1) is separated from the second chamber (2) by a first partition wall (7) which is set against the bottom (44) of the container (1a) in a liquid-tight manner and is oriented perpendicular to the bottom (44) and / or to a ceiling wall (5), wherein an upper edge (9) of the first partition wall (7) facing the ceiling wall (5) of the container (1a) is spaced away from the ceiling wall (5), forming a free space (8) between the ceiling wall (5) of the container (1a) spaced away from the bottom (44) and the upper edge (9) of the first partition wall (7) (= below the ceiling wall 5) as an overflow weir or edge for the overflow of wastewater freed from coarse material from the first chamber (1) into the second chamber (2) and / or the front area (45) of the second chamber (2) over the edge (9), the first partition wall (7) has at least one opening (95) in its lower area facing the floor (44), from which a submerged wall (96) is spaced apart, running parallel to the first partition wall (7), and is set against the floor (44), and / or a wall-like flow guide (97) is attached against the side of the first partition (7) facing the second chamber (2) in the area of ​​the openings (95), the flow guide (97) forms an angle of less than 20° with the side of the first partition (7) facing the second chamber (2), the opening of which faces the bottom (44) and extends parallel to the first partition (7), and / or the inlet pipe (49) with the outlet opening (49b) arranged at its end (49a) is led in the second chamber (2) up to the area of ​​the openings (95) for the supply of process water via the outlet opening (49b) into the area of ​​the openings (95). [6] Filter system according to one of the preceding claims, characterized by , that flushing nozzles (54) are connected to an area of ​​the inlet pipe (49) facing the floor (44) of the second chamber (2). [7] Filter system according to one of the preceding claims, characterized by , that in the first chamber (1) a supply nozzle (4) leading from the outside (70) into this chamber with its outlet opening (20) arranged in the first chamber (1) for introducing wastewater into the same for the purpose of filtration thereof is arranged, and a discharge nozzle (19) leading from the outside (70) into the third chamber (3) with its inlet opening (21) arranged in the third chamber (3) for discharging the process water via its outlet opening (19a) to the outside during and / or after filtration of the wastewater is arranged. [8] Filter system according to one of the preceding claims, characterized by, that in the second chamber (2) a second partition wall (11) aligned parallel to and spaced apart from the first partition wall (7) is attached to the ceiling wall (5) in a liquid-tight manner, a lower edge (13) of the second partition wall (11) facing away from the ceiling wall (5) is spaced away from the floor (44) forming a free space (12) between the floor (44) and the lower edge (13) of the second partition wall (11) for the flow of wastewater from a front area (45) of the second chamber (2) towards the rear lower area (46) of the second chamber (2). [9] Filter system according to any of the preceding claims, characterized by, that the rear lower area (46) of the second chamber (2) is separated from the third chamber (3) by a third partition wall (16) which is set against the bottom (44) of the container or second chamber (2) in a liquid-tight manner, an upper edge (18) of the third partition wall (16) facing the ceiling wall (5) of the container is spaced away from the ceiling wall (5) forming a free space (17) between the ceiling wall (5) of the container (1a) spaced away from the bottom (44) and the upper edge (18) of the third partition wall (16) for the purpose of allowing process water exiting from outlet openings (14b) of the cavities (14) of a lamella clarifier (15) and conveyed via the overflow channel (71) to flow over the edge (18) towards the third chamber (3),between the rear lower region (46) and the rear upper region (47) of the second chamber (2) of the lamella clarifier (15) with a plurality of parallel cavities (14) laterally bounded by lamella walls for the flow of wastewater from the lower rear region (46) of the second chamber (2) towards the rear upper region (47) of the second chamber (2) for the purpose of sediment settling and migration towards the floor (44) of the second chamber (2) against the second partition (11) and a third partition (16) is set in a liquid-tight manner, and / or outlet openings (14b) of the lamella clarifier (15) for the discharge of sediment-free process water from the ceiling wall (5) and the inlet openings (14a) of the lamella clarifier (15) for the discharge of wastewater freed from coarse material into the floor (44) of the second chamber (2) are facing each other. [10] Filter system according to one of the preceding claims, characterized by , that the lamella clarifier (15) has a plurality of parallel and adjacent cavities (14) or tubes (14) arranged as a tube package.

Images