Filtration sedimentation tank for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a filtration and sedimentation tank for sewage treatment, which comprises a water collecting well (100), a facultative regulating tank (200), a facultative tank (300), at least one contact oxidation tank, a sedimentation tank (600), a disinfection tank (700) and a water outlet well (800) which are sequentially arranged according to a sewage treatment sequence, and also comprises a fan (900), the deodorization device (1000) is connected with the disinfection tank (700) through an induced draft fan (1001); and a chlorine dioxide generator (1100), wherein the chlorine dioxide generator (1100) is connected with the disinfection tank (700). The water collecting well, the facultative regulating tank, the facultative tank, the contact oxidation tank, the sedimentation tank, the disinfection tank and the water outlet well are sequentially arranged according to the sewage treatment sequence, sewage is treated by combining a physical method, a biological method and a chemical method, the treatment mode is reasonable, the sewage treatment effect is good, the sewage discharge standard can be met, and safe discharge of the sewage is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a filtering sedimentation tank for sewage treatment. Background Technique

[0002] A sedimentation tank is a structure that uses sedimentation to remove suspended solids in water. Sedimentation tanks are widely used in wastewater treatment and are one of the most important components in the sewage treatment system. The static sedimentation of sewage and water quality detection are the key links determining the sewage treatment effect.

[0003] In the prior art, a Chinese utility model patent with the publication number of CN220676858U discloses a sewage treatment sedimentation tank, including a sedimentation tank. The bottom of the sedimentation tank is inclined. A sewage discharge port is arranged on the side with a higher bottom of the sedimentation tank. A receiving plate is laid at the bottom of the sedimentation tank. The side of the receiving plate close to the sewage discharge port is hinged to the bottom of the sedimentation tank through a hinge seat. A baffle is arranged upward at the end of the receiving plate away from the sewage discharge port. A long strip-shaped slider abuts against the side of the baffle close to the sewage discharge port. Stop edges are arranged upward on the receiving plate at both ends of the long strip-shaped slider. A chute is arranged on the side surface of the stop edge close to the long strip-shaped slider. The chute is parallel to the upper end surface of the receiving plate. Protrusions are arranged at the positions corresponding to the chutes at both ends of the long strip-shaped slider. The protrusions are slidably clamped in the chutes. A traction mechanism and a guiding mechanism are arranged at the upper end of the side of the sedimentation tank away from the sewage discharge port. The traction rope on the traction mechanism passes through the guiding mechanism and is connected to the end of the receiving plate away from the hinge seat. A sludge collection box is arranged outside the sewage discharge port. The bottom of the sludge collection box is funnel-shaped and its lower end is connected to a sludge suction pipe. It only discharges the sludge deposited in the sedimentation tank, and the sewage treatment method is relatively simple. The sewage treatment effect is relatively low and cannot meet the increasing requirements of modern society and the ecological environment for sewage treatment.

[0004] Therefore, the prior art needs to be improved and enhanced. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a filtering sedimentation tank for sewage treatment with a reasonable sewage treatment method and good sewage treatment effect.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A filtering sedimentation tank for sewage treatment, including a primary sump, an anoxic regulation tank, an anoxic tank, at least one biological contact oxidation tank, a sedimentation tank, a disinfection tank, and an effluent well arranged in sequence according to the sewage treatment order.

[0008] At least one first sewage pump for pumping the sewage in the primary sump into the anoxic regulation tank is arranged in the primary sump;

[0009] At least one second sewage pump is arranged in the anoxic regulating tank for pumping the sewage in the anoxic regulating tank into the anoxic tank;

[0010] A sludge pump is arranged in the sedimentation tank for pumping the sludge in the sedimentation tank into the sludge tank;

[0011] It further includes a blower, and the blower is connected to the first aeration device in the anoxic regulating tank, the second aeration device in the anoxic tank, the third aeration device in the contact oxidation tank and the sedimentation tank through an air pipeline;

[0012] An odor removal device, and the odor removal device is connected to the disinfection tank through an induced draft fan;

[0013] A chlorine dioxide generator, and the chlorine dioxide generator is connected to the disinfection tank.

[0014] As a further solution of the present utility model, sewage pipelines are arranged between the anoxic tank and the contact oxidation tank, between the contact oxidation tank and the sedimentation tank, between the sedimentation tank and the disinfection tank, and between the disinfection tank and the water outlet well.

[0015] As a further solution of the present utility model, a grille well is arranged in the sump well, and the grille well has a sewage inlet.

[0016] As a further solution of the present utility model, the first aeration device includes an aeration pipe communicated with the air pipeline, and a plurality of microporous aerators are uniformly arranged on the aeration pipe.

[0017] As a further solution of the present utility model, packing structures are arranged in both the anoxic tank and the contact oxidation tank. The packing structure includes a square shell, and the square shell is installed in the anoxic tank and the contact oxidation tank through embedded steel plates. A plurality of mesh holes are arranged on the surface of the square shell, and biological carrier packing is filled in the square shell.

[0018] As a further solution of the present utility model, the biological carrier packing is composed of a combination of two granular substances with different materials. Among them, one granular substance is a cuboid block granular material made of nano-modified polyurethane, and the other is a porous mineral granular material.

[0019] As a further solution of the present utility model, the filling rate of the biological carrier packing in the square shell is 35%-85%.

[0020] As a further solution of the present utility model, a water distribution cylinder is arranged in the middle of the sedimentation tank. The water distribution cylinder is installed in the sedimentation tank through channel steel, and the water distribution cylinder is communicated with the contact oxidation tank through a pipeline.

[0021] As a further solution of the present utility model, the water outlet well is provided with a discharge port.

[0022] As a further solution of the present utility model, a flowmeter for measuring the fluid flow in the water outlet well is provided in the water outlet well.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] Due to the above structural design, that is, a sump, an anoxic regulation tank, an anoxic tank, a contact oxidation tank, a sedimentation tank, a disinfection tank and a water outlet well are sequentially arranged according to the sewage treatment sequence, and the sewage is treated by combining physical method, biological method and chemical method. The treatment method is reasonable, the sewage treatment effect is good, it can meet the sewage discharge standard and ensure the safe discharge of sewage. Description of the Drawings

[0025] Attached Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0026] Attached Figure 2 is a schematic structural diagram of the anoxic regulation tank of an embodiment of the present utility model;

[0027] Attached Figure 3 is a schematic structural diagram of the sedimentation tank of an embodiment of the present utility model;

[0028] Attached Figure 4 is a schematic structural diagram of the first aeration device of an embodiment of the present utility model.

[0029] The reference numerals in the drawings are as follows:

[0030] 100 - sump, 200 - anoxic regulation tank, 300 - anoxic tank, 400 - first contact oxidation tank, 500 - second contact oxidation tank, 600 - sedimentation tank, 700 - disinfection tank, 800 - water outlet well, 900 - blower, 1000 - deodorization device, 1100 - chlorine dioxide generator;

[0031] 101 - first sewage pump, 102 - grille well;

[0032] 1001 - induced draft fan;

[0033] 1021 - sewage inlet;

[0034] 201 - second sewage pump, 202 - first aeration device;

[0035] 2021 - aeration pipe, 2022 - microporous aerator;

[0036] 601 - sludge pump, 602 - water distribution cylinder;

[0037] 901 - air pipeline;

[0038] 301 - packing structure

[0039] 3011 - Square housing, 3012 - Mesh holes, 3013 - Biological carrier packing;

[0040] 801 - Drain outlet, 802 - Flowmeter. Detailed implementation manners

[0041] To make the above - mentioned objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present application, unless otherwise clearly specified and limited, the terms "install", "connect", "join", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present application can be understood according to specific circumstances.

[0045] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0047] Embodiment:

[0048] Please refer to Figures 1-4 , a filtration sedimentation tank for sewage treatment in this application, includes a sump 100, an anoxic regulation tank 200, an anoxic tank 300, a first contact oxidation tank 400, a second contact oxidation tank 500, a sedimentation tank 600, a disinfection tank 700 and an effluent well 800 which are arranged in sequence according to the sewage treatment order. Between the upper parts of the anoxic tank 300 and the first contact oxidation tank 400, between the lower parts of the first contact oxidation tank 400 and the second contact oxidation tank 500, between the upper parts of the second contact oxidation tank 500 and the sedimentation tank 600, between the upper parts of the sedimentation tank 600 and the disinfection tank 700, and between the upper parts of the disinfection tank 700 and the effluent well 800, sewage pipelines are provided. Specifically in implementation, the above-mentioned units can be arranged side by side in an orderly manner in pairs to reduce the floor area.

[0049] Specifically, a grille well 102 is provided in the sump 100. The grille well 102 has a sewage inlet 1021. Specifically in implementation, the grille well 102 is arranged in one corner of the sump 100 to facilitate the sewage inlet 1021 to access the sewage pipeline. Since different thickness grilles are provided on the grille well 102, suspended matters with larger and smaller volumes can be intercepted. Two first sewage pumps 101 for pumping the sewage in the sump 100 into the anoxic regulation tank 200 are provided in the sump 100; two second sewage pumps 201 for pumping the sewage in the anoxic regulation tank 200 into the anoxic tank 300 are provided in the anoxic regulation tank 200.

[0050] Specifically, it further includes a blower 900 which is connected to the first aeration device 202 in the facultative oxygen regulation tank 200, the second aeration device in the facultative oxygen tank 300, the third aeration device in the first contact oxidation tank 400 and the second contact oxidation tank 500, and the sedimentation tank 600 through an air pipeline 901. In specific implementation, a Roots blower is adopted for the blower 900.

[0051] The air pipeline 901 includes a main pipeline and branch pipelines communicating with the main pipeline. Most of the branch pipelines are respectively communicated with the first aeration device 202, the second aeration device and the third aeration device, and one of the branch pipelines extends deep into the sedimentation tank 600. The first aeration device 202 includes an air distribution pipe 2021 communicated with the air pipeline 901, and a plurality of microporous aerators 2022 are uniformly arranged on the air distribution pipe 2021. The air distribution pipe 2021 is installed at the bottom of the facultative oxygen regulation tank 200 through an ABS bracket. Since the structures of the third aeration device and the second aeration device are the same as that of the first aeration device 202, they will not be described in detail here.

[0052] Specifically, a deodorization device 1000 is provided. The deodorization device 1000 is connected to the disinfection tank 700 through an induced draft fan 1001, that is, an odor pipeline is provided between the disinfection tank 700 and the deodorization device 1000, and the induced draft fan is installed on the odor pipeline for introducing the malodorous gas generated in the disinfection tank 700 into the deodorization device. In specific implementation, a high-frequency microcomputer light wave water ion deodorization device is adopted for the deodorization device 1000, which acts on water molecules through electromagnetic waves with a specific frequency to generate ions with strong oxidation ability, thereby destroying the molecular structure of the malodorous gas.

[0053] Specifically, a chlorine dioxide generator 1100 is provided, which is connected to a sodium chlorate storage tank and a hydrochloric acid storage tank. The chlorine dioxide generator 1100 is connected to the disinfection tank 700, that is, a disinfection pipeline is provided between the chlorine dioxide generator and the disinfection tank. The chlorine dioxide generated by the chlorine dioxide generator is introduced into the disinfection tank 700 to kill the pathogenic microorganisms in the sewage in the disinfection tank 700.

[0054] Specifically, a packing structure 301 is provided in the anoxic-oxic pond 300, the first contact oxidation pond 400, and the second contact oxidation pond. The packing structure 301 includes a square shell 3011, which is installed in the anoxic-oxic pond 301, the first contact oxidation pond 400, and the second contact oxidation pond 500 through embedded steel plates. A number of mesh holes 3012 are provided on the surface of the square shell 301, and biological carrier packing 3013 is filled in the square shell 3011; the biological carrier packing 3013 is composed of two different granular substances. Among them, one granular substance is a cuboid-shaped block granular of nano-modified polyurethane material, and the other is a porous mineral granular; the filling rate of the biological carrier packing 3013 in the square shell 3011 is 35%-85%. An aeration system and a packing system are provided in the anoxic-oxic pond 300, the first contact oxidation pond 400, and the second contact oxidation pond 500. The aeration system regularly discharges gas into the pond through an air pipe, increases the oxygen supply through aeration, promotes the growth of aerobic microorganisms, decomposes organic matter, and at the same time, through the regular air backwashing method, realizes the automatic alternate regeneration of the biofilm in the packing system.

[0055] Specifically, a water distribution cylinder 602 is provided in the middle of the sedimentation pond 600. The water distribution cylinder 602 is installed in the sedimentation pond 600 through channel steel. The water distribution cylinder 602 is connected to the second contact oxidation pond 500 through a sewage pipe, that is, the sewage in the second contact oxidation pond 500 enters the water distribution cylinder 601 through the sewage pipe; a sludge pump 601 is provided in the sedimentation pond 600 for pumping the sludge in the sedimentation pond into the sludge pond.

[0056] During specific implementation, a number of upper partitions are provided on the top wall of the disinfection pond 700, and a number of lower partitions are provided on the bottom wall. The upper partitions and the lower partitions are arranged staggeredly, so that the sewage entering the disinfection pond flows through an S-shaped flow channel, and thus chlorine dioxide can fully disinfect the sewage entering the disinfection pond.

[0057] Specifically, the water outlet well 800 is provided with a discharge port 801 for discharging the treated sewage meeting the discharge standard into the municipal pipeline. A flow meter 802 for measuring the fluid flow in the water outlet well is provided in the water outlet well 800.

[0058] In summary, through the above structural design, the present utility model solves the deficiencies in the prior art and has the characteristics of reasonable sewage treatment method, good sewage treatment effect, and strong practicability.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0060] The embodiments described above merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A filtering sedimentation tank for sewage treatment, characterized in that: The invention comprises a water collection well (100), an aerobic regulating tank (200), an aerobic tank (300), at least one contact oxidation tank, a sedimentation tank (600), a disinfection tank (700) and a water outlet well (800), which are arranged in sequence according to the sewage treatment sequence. The water collection well (100) is provided with at least one first sewage pump (101) for pumping sewage in the water collection well (100) into the aerobic regulating tank (200); The aerobic regulating tank (200) is provided with at least one second sewage pump (201) for pumping sewage in the aerobic regulating tank (200) into the aerobic tank (300); A sludge pump (601) is provided in the sedimentation tank (600) for pumping the sludge in the sedimentation tank (600) into a sludge pool; It also includes a fan (900), which is connected to the first aeration device (202) in the aerobic regulating tank (200), the second aeration device in the aerobic tank (300), the third aeration device in the contact oxidation tank, and the sedimentation tank (600) through an air duct (901); a deodorizing device (1000), the deodorizing device (1000) being connected to the disinfection tank (700) via an induced draft fan (1001); A chlorine dioxide generator (1100) is connected to the disinfection tank (700).

2. The filtration sedimentation tank for sewage treatment according to claim 1, characterized in that: Sewage pipes are provided between the anoxic tank (300) and the contact oxidation tank, between the contact oxidation tank and the sedimentation tank (600), between the sedimentation tank (600) and the disinfection tank (700), and between the disinfection tank (700) and the water outlet well (800).

3. The filtration sedimentation tank for sewage treatment according to claim 2, characterized in that: A grid well (102) is provided in the water collection well (100), and the grid well (102) has a sewage inlet (1021).

4. The filtration sedimentation tank for sewage treatment according to claim 3, characterized in that: The first aeration device (202) comprises an aeration pipe (2021) connected to the air duct (901), and a plurality of microporous aerators (2022) are evenly arranged on the aeration pipe (2021).

5. The filtration sedimentation tank for sewage treatment according to claim 4, characterized in that: The anoxic pool (300) and the contact oxidation pool are both provided with a filler structure (301), the filler structure (301) comprising a square shell (3011), the square shell (3011) being installed in the anoxic pool (300) and the contact oxidation pool via a pre-buried steel plate, a plurality of mesh holes (3012) being provided on the surface of the square shell (3011), and the square shell (3011) being filled with a biological carrier filler (3013).

6. The filtration sedimentation tank for sewage treatment according to claim 5, characterized in that: The biological carrier filler (3013) is composed of two granular substances of different materials, wherein one granular substance is a rectangular block particle of nano-modified polyurethane material, and the other is a porous mineral particle.

7. The filtration sedimentation tank for sewage treatment according to claim 6, characterized in that: The filling rate of the biological carrier filler (3013) in the square shell (3011) is 35%-85%.

8. The filtration sedimentation tank for sewage treatment according to claim 7, characterized in that: A water distribution cylinder (602) is provided in the middle of the sedimentation tank (600). The water distribution cylinder (602) is installed in the sedimentation tank (600) through channel steel. The water distribution cylinder (602) is connected to the contact oxidation tank through a sewage pipe.

9. The filtration sedimentation tank for sewage treatment according to claim 8, characterized in that: The water outlet well (800) is provided with a discharge port (801).

10. The filtration sedimentation tank for sewage treatment according to claim 9, characterized in that: A flow meter (802) for measuring the flow rate of fluid in the water outlet well is arranged in the water outlet well (800).

Images