A sewage filtration installation

Abstract

The utility model relates to a sewage filtering facility relates to water, wastewater or sewage treatment field, solve the short flow, the flow of the existing sewage filtering facility, the dead zone phenomenon because of the uneven distribution of gravity flow water, and the technical problem that pressure flow water distribution is high in energy consumption, sensitive to the water fluctuation, weak in the anti-impact load capacity, and the system stability is insufficient, technical scheme includes water cavity, filter device, inlet pipe, clean water discharge pipe and sewage discharge pipe, filter device is located in water cavity and is arranged in the water inlet end of clean water discharge pipe for filtering, filter device can contain skeleton and filter membrane and form clean water flow channel, the facility is applicable to sewage treatment, can improve the filtering efficiency, water quality, reduce short flow and dead zone, reduce energy consumption, and stable operation.

Description

Technical Field

[0001] This utility model relates to the field of water, wastewater or sewage treatment, and specifically to a sewage filtration facility. Background Technology

[0002] Wastewater filtration facilities typically include two main types: sand filters and sand filter tanks. These facilities use granular filter media inside the tank or filter cylinder, allowing the water to be treated to penetrate the filter media layer under the action of gravity flow or pressure flow, thereby achieving the interception and separation of impurities.

[0003] In gravity-fed water distribution, water flows mainly through the filter media layer by its own gravity. However, due to the inherent limitations of the water distribution structure, it is difficult to achieve a uniform and stable fluid distribution, which can easily lead to short-circuiting, deviating flow, and dead zones in the filter media layer. This not only reduces filtration efficiency and filter media utilization, but also causes premature clogging or penetration of local filter layers, affecting the stability and continuity of system operation.

[0004] In a pressurized water distribution system, although pressurization by a water pump can improve water flow distribution to some extent, it requires continuous energy consumption to maintain system pressure, resulting in a significant increase in operating energy consumption and equipment maintenance costs. In addition, the pressurized system is more sensitive to fluctuations in influent. When the flow rate changes abruptly, it can easily exacerbate uneven water flow distribution and even cause disturbance to the filter media layer, affecting the filtration effect.

[0005] Whether using gravity flow or pressure flow, existing filtration facilities are unable to effectively adapt to changes in influent conditions, and generally suffer from weak resistance to shock loads and insufficient system stability. In particular, when the concentration of suspended solids in the influent fluctuates or the water volume changes abruptly, the filtration effect is prone to decline, which limits their application in efficient and stable wastewater treatment. Utility Model Content

[0006] The purpose of this utility model is to provide a sewage filtration facility that utilizes a filtration device installed in the water-containing cavity. This filtration device is located at the inlet end of the clean water discharge pipe and is used to filter the fluid entering the clean water discharge pipe. This solves the technical problems of existing sewage filtration facilities, such as short flow, flow deviation, and dead zones caused by uneven gravity flow distribution, as well as high energy consumption, sensitivity to inlet water fluctuations, weak resistance to shock loads, and insufficient system stability. The result is improved filtration efficiency, reduced operating energy consumption, and enhanced system adaptability and stability.

[0007] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0008] A wastewater filtration facility includes a water-containing cavity, a filtration device, an inlet pipe, a clean water outlet pipe, and a wastewater outlet pipe connecting the water-containing cavity;

[0009] The filtration device is located inside the water-containing cavity, and the sewage discharge pipe is connected to the bottom of the water-containing cavity;

[0010] The filtration device is located at the inlet end of the clean water discharge pipe and is used to filter the fluid entering the clean water discharge pipe.

[0011] Preferably, the filtration device includes a frame and a filter membrane supported on the frame;

[0012] The filter device has a clean water channel inside, and the inlet end of the clean water discharge pipe is connected to the clean water channel.

[0013] Preferably, the filtration device includes a multi-layer frame, the filter membrane is stacked between adjacent frames, and a clear water flow channel is formed inside the innermost frame.

[0014] Preferably, the filtering device further includes a connecting pipe;

[0015] The frame is supported on the connecting pipe, one end of which is connected to the clean water channel, and the other end is detachably connected to the inlet of the clean water outlet pipe.

[0016] Preferably, the inlet pipe, the clean water outlet pipe, and the wastewater outlet pipe are respectively equipped with an inlet valve, a clean water valve, and a wastewater valve.

[0017] Preferably, it also includes a controller;

[0018] One or more of the inlet valve, the clean water valve, and the wastewater valve are electric valves and are electrically connected to the controller.

[0019] Preferably, the clean water discharge pipe is also equipped with a flow meter, and the flow meter is electrically connected to the controller.

[0020] Preferably, the clean water discharge pipe is also equipped with a manual valve.

[0021] Preferably, the filter membrane is an ultrafiltration membrane.

[0022] Preferably, the water-containing cavity is a tank; or,

[0023] The water-containing cavity is a pool.

[0024] The beneficial effects of this utility model are:

[0025] Improve filtration efficiency and effluent water quality: The filtration device is located at the inlet end of the clean water discharge pipe, which can directly intercept suspended solids and particulate impurities before the fluid enters the clean water discharge pipe; when the filter membrane is an ultrafiltration membrane, it can also achieve higher precision solid-liquid separation, thereby significantly improving the removal rate of effluent turbidity, suspended solids and particulate pollutants; and to a certain extent, it reduces operating energy consumption.

[0026] Reduce short-circuiting, deflection, and dead zones: By placing the filtration device inside the water-containing cavity and forming a clear water flow channel, it is beneficial to guide the flow of clear water evenly and distribute the flow rate, avoiding the short-circuiting and dead zones that are easily generated by traditional gravity water distribution, thereby improving the utilization rate of filter media or filter membranes and the overall operating efficiency of the system. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this utility model can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a simplified structural diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the assembly of the filter device in this utility model;

[0031] Figure 4 for Figure 3 Sectional view along the AA direction.

[0032] 1-Water-containing cavity, 2-Water inlet pipe, 3-Clear water outlet pipe, 4-Sewage outlet pipe, 5-Frame, 6-Filter membrane, 7-Connecting pipe, 8-Water inlet valve, 9-Clear water valve, 10-Sewage valve, 11-Flow meter, 12-Manual valve. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the relevant utility model and are not intended to limit the utility model. The described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] Example 1

[0035] See appendix Figure 1 and attached Figure 2This embodiment is a technical solution that can achieve the purpose of this utility model;

[0036] A wastewater filtration facility includes a water-containing cavity 1, a filtration device, and an inlet pipe 2, a clean water outlet pipe 3, and a wastewater outlet pipe 4 connected to the water-containing cavity 1. The water-containing cavity 1 is a cavity for containing the fluid to be filtered and for allowing the fluid to settle. Specifically, it can be a tank or a pool. The specific structure of the tank can be analogous to the tank body of a sand filter tank, and the specific structure of the pool can be analogous to the pool body of a sand filter pond.

[0037] The filter is located inside the water-containing cavity 1; the outlet of the inlet pipe 2 can be higher than the location of the filter, and when the water-containing cavity 1 is a pool, the outlet of the inlet pipe 2 can be located above the opening of the pool; the sewage discharge pipe 4 is connected to the bottom of the water-containing cavity 1. When the water-containing cavity 1 is a tank, the sewage discharge pipe 4 can be set at the bottom of the water-containing cavity 1, that is, directly below. When the water-containing cavity 1 is a pool, the sewage discharge pipe 4 can be set at the bottom of the water-containing cavity 1 and extend towards one side of the water-containing cavity 1.

[0038] The filter device is located at the inlet end of the clean water discharge pipe 3 and is used to filter the fluid entering the clean water discharge pipe 3. After being filtered by the filter device, the fluid enters the inlet end of the clean water discharge pipe 3, flows through the inlet and outlet pipe 3 and then flows out.

[0039] Example 2

[0040] See appendix Figure 3 and attached Figure 4 Based on the above embodiment 1, this embodiment describes the specific structure of the filtration device.

[0041] The filtration device includes a frame 5 and a filter membrane 6 supported on the frame 5. The frame 5 is undoubtedly a frame structure, and the filter membrane 6 is stretched on the frame 5. Inside the frame 5, there is a receiving cavity, i.e., a clear water channel. The fluid to be filtered enters the clear water channel inside the frame 5 after being filtered by the filter membrane 6 from outside the filtration device. The clear water channel is connected to the inlet end of the clear water discharge pipe 3, so that the fluid entering the clear water channel can flow out through the clear water discharge pipe 3.

[0042] The skeleton 5 used in this embodiment can be a single frame structure, but it is preferable to set multiple skeletons 5, and these skeletons 5 are nested one inside the other to form a multi-layer skeleton 5 structure. The filter membrane 6 is stacked between adjacent skeletons 5, and the innermost skeleton 5 forms a receiving cavity, i.e., a clear water flow channel.

[0043] In this embodiment, the frame 5 can be directly supported on the clean water discharge pipe 3, that is, the clean water discharge pipe 3 extends into the filter device and communicates with the receiving cavity to form a clean water flow channel; however, in order to facilitate the replacement of the filter device, it is preferable to support the frame 5 on the connecting pipe 7. Here, the connecting pipe 7 acts as a keel, that is, the main load-bearing frame. One end of the connecting pipe 7 extends into the filter device and communicates with the receiving cavity, and the other end is detachably connected to the water inlet end of the clean water discharge pipe 3. The specific detachable connection method can be threaded or clamped connection.

[0044] The filter membrane 6 in this invention is a polymer separation membrane, preferably an ultrafiltration membrane.

[0045] Example 3

[0046] Based on the above embodiments, further improvements have been made to achieve control over the wastewater filtration facility.

[0047] Water inlet valve 8, clean water valve 9, and sewage valve 10 are respectively installed on water inlet pipe 2, clean water outlet pipe 3, and sewage outlet pipe 4. Since clean water is relatively precious, an additional manual valve 12 is added to clean water outlet pipe 3.

[0048] In this embodiment, one or more of the inlet valve 8, the clean water valve 9, and the sewage valve 10 are electric valves. However, in order to better achieve the purpose of this embodiment, the inlet valve 8, the clean water valve 9, and the sewage valve 10 are all electric valves, and these valves are electrically connected to the controller.

[0049] In addition, a flow meter 11 is also installed on the clean water discharge pipe 3. The flow meter 11 can be an electromagnetic flow meter and is electrically connected to the controller.

[0050] Therefore, the following control method can be achieved, and it can be understood as the method of using the facility described in this utility model:

[0051] Water intake process:

[0052] Open the inlet valve 8 and keep the sewage valve 10 closed, so that the fluid to be filtered enters the water-containing chamber 1 through the inlet pipe 2. After the fluid in the water-containing chamber 1 reaches the predetermined water level, close the inlet valve 8 to prepare for the filtration process.

[0053] Water production process:

[0054] Open the clean water valve 9 while keeping the wastewater valve 10 closed; the fluid is filtered by the filter device in the water-containing chamber 1 and then enters the clean water flow channel, and then flows out through the clean water discharge pipe 3; during this process, the opening degree of the clean water valve 9 can be adjusted by the controller according to the flow signal fed back by the flow meter 11 to maintain a constant water production flow rate; by utilizing the liquid level difference between the water-containing chamber 1 and the clean water discharge pipe 3 and the suction generated by the siphon principle, filtration flow without external power can be achieved (of course, a certain amount of power can also be applied by a water pump), thereby saving energy consumption.

[0055] Sewage discharge process:

[0056] Close the clean water valve 9 and open the sewage valve 10 at the same time; the concentrated sludge settled at the bottom of the water-containing chamber 1 is discharged through the sewage discharge pipe 4 under the action of gravity; during the sewage discharge process, the opening degree of the sewage valve 10 and the duration of sewage discharge can be controlled by the controller to ensure that the sludge is completely discharged and to maintain the filtration performance of the filter membrane 6.

[0057] In the description of the embodiments of this utility model, unless otherwise stated, "、" means "or". For example, A and B can mean A or B. "And" and "or" in this article are only a description of the relationship between related objects, indicating that there can be three relationships. For example, A and or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0058] It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings; in the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0059] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed, and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations; the scope of this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalent features without departing from the above-described utility model concept; for example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A wastewater filtration facility, characterized in that: It includes a water-containing cavity (1), a filter device, an inlet pipe (2), a clean water outlet pipe (3), and a sewage outlet pipe (4) that connect the water-containing cavity (1). The filter device is located inside the water-containing cavity (1), and the sewage discharge pipe (4) is connected to the bottom of the water-containing cavity (1); The filtration device is located at the inlet end of the clean water discharge pipe (3) and is used to filter the fluid entering the clean water discharge pipe (3). The filtration device includes a frame (5) and a filter membrane (6) supported on the frame (5). The filter device is equipped with a clean water channel inside, and the water inlet of the clean water discharge pipe (3) is connected to the clean water channel.

2. The wastewater filtration facility as described in claim 1, characterized in that: The filtration device includes a multi-layer frame (5), and the filter membrane (6) is stacked between adjacent frames (5), with a clear water flow channel formed inside the innermost frame (5).

3. The wastewater filtration facility as described in claim 1 or 2, characterized in that: The filter device also includes a connecting pipe (7). The frame (5) is supported on the connecting pipe (7). One end of the connecting pipe (7) is connected to the clean water channel, and the other end is detachably connected to the water inlet of the clean water discharge pipe (3).

4. The wastewater filtration facility as described in claim 1, characterized in that: The inlet pipe (2), the clean water outlet pipe (3), and the sewage outlet pipe (4) are respectively equipped with an inlet valve (8), a clean water valve (9), and a sewage valve (10).

5. The wastewater filtration facility as described in claim 4, characterized in that: It also includes the controller; One or more of the inlet valve (8), the clean water valve (9), and the sewage valve (10) are electric valves and are electrically connected to the controller.

6. The wastewater filtration facility as described in claim 5, characterized in that: The clean water discharge pipe (3) is also equipped with a flow meter (11), and the flow meter (11) is electrically connected to the controller.

7. The wastewater filtration facility as described in claim 4, characterized in that: The clean water discharge pipe (3) is also equipped with a manual valve (12).

8. The wastewater filtration facility as described in claim 1 or 2, characterized in that: The filter membrane (6) is an ultrafiltration membrane.

9. The wastewater filtration facility as described in claim 1, characterized in that: The water-containing cavity (1) is a tank; or, The water-containing cavity (1) is a pool.

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