Integrated sewage treatment device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an integrated sewage treatment device, which comprises a coagulating sedimentation system, a sewage treatment system and a sewage treatment system, the flat plate type ceramic membrane filtering system is arranged at the downstream of the coagulating sedimentation system and is used for filtering the primary treated water to obtain secondary treated water; the dosing system is used for dosing the coagulating sedimentation system; the backwashing system is used for backwashing the flat plate type ceramic membrane filtration system; the coagulating sedimentation system, the flat plate type ceramic membrane filtration system, the dosing system and the backwashing system are modularly arranged and are positioned in the same container. According to the utility model, the coagulating sedimentation system, the flat plate type ceramic membrane filtration system, the dosing system and the backwashing system are modularly arranged and positioned in the same container, so that high integration can be realized, all treatment units and auxiliary matching units are modularly spliced, the effluent quality is stable, the use is convenient and flexible, and the sewage treatment effect is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and in particular provides an integrated sewage treatment device. Background Art

[0002] With economic development, the environmental situation is becoming increasingly severe. Water pollution, in particular, has become a critical factor hindering sustainable economic and social development. The diverse types of wastewater, the large volumes discharged, and the significant fluctuations in water quality and quantity are putting the environment at risk. To protect our ecological environment, we must continuously improve emission standards, which undoubtedly poses a huge challenge to wastewater discharge companies.

[0003] In the existing technology, the influent water quality received by sewage treatment plants varies. Some enterprises lack environmental protection responsibilities and have weak environmental awareness, and do not strictly control the sewage treatment within the enterprises, resulting in the influent exceeding the standard of the park sewage treatment plant, resulting in the effluent exceeding the standard and the sewage treatment effect being poor. Therefore, in order to ensure that the effluent meets the standard, sewage treatment plants usually install sewage treatment equipment with stronger treatment capacity. However, the influent water quality of some enterprises is better. If sewage treatment equipment with the same treatment capacity is used, it will cause redundant waste of equipment treatment capacity.

[0004] Therefore, how to provide a sewage treatment device that is adaptable to different scenarios and stable and reliable is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model provides an integrated sewage treatment device to solve the defects of excessive sewage treatment or redundant waste of sewage treatment equipment in the prior art, and realizes that the operation mode can be adjusted according to different water quality, thereby ensuring the stability of system operation and ensuring that the sewage treatment effect always meets the standards.

[0006] The utility model provides an integrated sewage treatment device, comprising:

[0007] Coagulation and sedimentation system, used to coagulate and sediment sewage to obtain primary treated water;

[0008] A flat-plate ceramic membrane filtration system is provided downstream of the coagulation and sedimentation system and is used to filter the primary treated water to obtain secondary treated water;

[0009] A dosing system, used for adding drugs to the coagulation and sedimentation system;

[0010] A backwashing system, used for backwashing the flat-plate ceramic membrane filtration system;

[0011] Furthermore, the coagulation and sedimentation system, the flat-plate ceramic membrane filtration system, the dosing system and the backwashing system are all modularly configured and are located in the same container.

[0012] According to an integrated sewage treatment device provided by the present utility model, the coagulation and sedimentation system includes:

[0013] Water inlet device;

[0014] Reaction tank, used for the full reaction between sewage and chemicals to produce flocs;

[0015] A sedimentation tank is provided downstream of the reaction tank, and an inclined tube filler is provided in the sedimentation tank, and the inclined tube filler is used for the flocculent sedimentation sludge;

[0016] A mud discharge device is connected to the sedimentation tank.

[0017] According to an integrated sewage treatment device provided by the present utility model, the water inlet device includes:

[0018] A water inlet pump, used for delivering water to the reaction tank;

[0019] The water quality online detector and flow meter are both arranged on the water inlet pipe, and are used to monitor the water quality and flow rate of the inlet water in real time respectively.

[0020] According to an integrated sewage treatment device provided by the present invention, the reaction tank includes:

[0021] Coagulation reaction tank, used for mixing sewage and coagulant;

[0022] The flocculation reaction tank is used to stir and mix the tiny flocs in the sewage with the flocculant to produce the flocs.

[0023] According to an integrated sewage treatment device provided by the utility model, the coagulation and sedimentation system further includes:

[0024] A water distribution device extends from one end of the sedimentation tank to the other end, and a plurality of flow holes are provided at the bottom of the water inlet trough of the water distribution device to ensure that the water enters the sedimentation tank evenly;

[0025] The outlet weir plate is arranged on one side of the top of the sedimentation tank.

[0026] According to an integrated sewage treatment device provided by the present utility model, the mud discharge device includes:

[0027] A plurality of sludge hoppers, each of which has a trapezoidal cross-section;

[0028] A plurality of perforated mud discharge branch pipes are provided corresponding to the sludge hoppers one by one; and each of the perforated mud discharge branch pipes is provided with a valve;

[0029] A mud discharge main pipe, one end of which is connected to each of the perforated mud discharge branch pipes;

[0030] A sludge discharge pump, wherein the water inlet of the sludge discharge pump is connected to the other end of the sludge discharge main pipe, and the water outlet of the sludge discharge pump is connected to the sewer.

[0031] According to an integrated sewage treatment device provided by the present invention, the flat-plate ceramic membrane filtration system includes:

[0032] A membrane pool is provided with multiple groups of flat ceramic membrane components, and the membranes can be replaced individually. The membrane pool is used to filter the first-level purified water;

[0033] A clean water tank, used to hold the filtered primary purified water as system effluent or backwash water;

[0034] Wastewater tank to hold backwash water;

[0035] An emptying pump has one end connected to the membrane pool and the other end connected to the wastewater pool. The emptying pump is used to discharge the water after backwashing in the membrane pool into the wastewater pool.

[0036] According to an integrated sewage treatment device provided by the present utility model, the dosing system includes:

[0037] pharmaceutical storage tanks;

[0038] A dosing pump is connected to the drug storage tank at one end and to the reaction tank at the other end.

[0039] According to an integrated sewage treatment device provided by the present invention, the backwash system includes:

[0040] a backwash pump, one end of which is connected to the clean water tank and the other end of which is connected to the membrane tank, and the backwash pump is used to spray the backwash water to the flat ceramic membrane assembly;

[0041] Backwash agent storage tank, used to hold backwash agent;

[0042] A backwashing dosing pump is connected to the backwashing agent storage tank, and is used to spray the backwashing agent onto the flat ceramic membrane assembly.

[0043] According to an integrated sewage treatment device provided by the present invention, the flat-plate ceramic membrane filtration system further includes:

[0044] A spraying device is used to perform chemical spray cleaning on the flat ceramic membrane assembly.

[0045] The integrated sewage treatment device provided by the utility model coagulates and settles sewage through a coagulation and sedimentation system to obtain primary treated water; a flat-plate ceramic membrane filtration system is arranged downstream of the coagulation and sedimentation system to filter the primary treated water to obtain secondary treated water; a dosing system adds medicine to the coagulation and sedimentation system; and a backwashing system backwashes the flat-plate ceramic membrane filtration system; and the coagulation and sedimentation system, ceramic filtration system, dosing system and backwashing system are all modularly arranged and located in the same container. The utility model can achieve high integration, modularly splicing various treatment units and auxiliary supporting units, and can adjust the operation mode according to different water qualities to ensure stable effluent water quality. It is convenient and flexible to use, optimizes sewage treatment effects, and is convenient for maintenance and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 This is a working principle diagram of the integrated sewage treatment device provided by the utility model.

[0048] Figure 2 It is a plan layout diagram of the coagulation and sedimentation system provided by the utility model.

[0049] Figure 3 It is a plan layout diagram of the flat-plate ceramic membrane filtration system provided by the utility model.

[0050] Figure 4 This is a schematic diagram of the water inlet rectification and distribution of the sedimentation tank provided by the utility model.

[0051] Figure 5 It is a schematic diagram of a sedimentation tank mud discharge pipe provided by the utility model.

[0052] Reference numerals:

[0053] 1. Coagulation and sedimentation system; 2. Flat-plate ceramic membrane filtration system; 3. Dosing system; 4. Backwash system; 11. Water inlet device; 12. Reaction tank; 13. Sedimentation tank; 14. Inclined tube filler; 15. Mud discharge device; 111. Water inlet pump; 112. Water quality online detector; 121. Coagulation reaction tank; 122. Flocculation reaction tank; 123. First stirring shaft; 124. Second stirring shaft; 16. Water distribution device 17. Outlet weir plate; 151. Sludge hopper; 152. Perforated sludge discharge branch pipe; 153. Sludge discharge main pipe; 154. Sludge discharge pump; 21. Membrane tank; 22. Clear water tank; 23. Wastewater tank; 24. Emptying pump; 25. Spraying device; 26. Water production pump; 27. Outlet water online detection; 31. Chemical storage tank; 32. Dosing pump; 41. Backwash pump; 42. Backwash chemical storage tank; 43. Backwash dosing pump. DETAILED DESCRIPTION

[0054] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0056] The following combination Figure 1-Figure 5 The utility model is described as follows: an integrated sewage treatment device includes a coagulation and sedimentation system 1, a flat ceramic membrane filtration system 2, a dosing system 3, and a backwashing system 4.

[0057] Among them, the coagulation and sedimentation system 1 is used to coagulate and sediment the sewage to obtain primary treated water; the flat-plate ceramic membrane filtration system 2 is arranged downstream of the coagulation and sedimentation system 1, and is used to filter the primary treated water to obtain secondary treated water; the dosing system 3 is used to dosing the coagulation and sedimentation system 1; the backwashing system 4 is used to backwash the flat-plate ceramic membrane filtration system 2; and the coagulation and sedimentation system 1, the flat-plate ceramic membrane filtration system 2, the dosing system 3 and the backwashing system 4 are all modularly arranged and are all located in the same container.

[0058] The integrated sewage treatment device provided by the utility model modularizes the various treatment units and auxiliary supporting units, and can adjust the operation mode according to different water qualities to ensure stable effluent water quality. It is easy and flexible to use, optimizes the sewage treatment effect, and is convenient for maintenance and transportation.

[0059] In a feasible embodiment of the present invention, the coagulation and sedimentation system 1 includes a water inlet device 11 , a reaction tank 12 , a sedimentation tank 13 , an inclined tube filler 14 and a mud discharge device 15 .

[0060] The water inlet device 11 includes an inlet pump 111, which delivers the incoming water to the reaction tank 12. An online water quality monitor 112 and a flow meter are both installed on the inlet pipe, respectively, for real-time monitoring of the incoming water quality and flow rate. The reaction tank 12 is used to fully react the sewage and the reagent to produce flocs. A sedimentation tank 13 is located downstream of the reaction tank 12 and is equipped with an inclined tube packing 14, which is used to precipitate sludge from the flocs. A sludge discharge device 15 is connected to the sedimentation tank 13.

[0061] The influent enters the reaction tank 12 through the inlet pump 111, and after sufficient reaction, enters the sedimentation tank 13. The sedimentation tank 13 is provided with an inclined tube filler 14. The sludge settles in the inclined tube filler 14 and slides to the sludge discharge device 15. The sludge discharge device 15 regularly discharges the sludge out of the system.

[0062] In one embodiment of the present invention, the reaction tank 12 includes a coagulation tank 121 and a flocculation tank 122. The coagulation tank 121 is used to mix the wastewater with the coagulant, and two coagulation tanks 121 can be provided. The flocculation tank 122 is used to mix the micro-flocculations in the wastewater with the flocculant to produce flocs. To ensure sufficient mixing of the wastewater and the added chemicals, the chemicals are delivered to the water inlets of the coagulation tanks 121 and flocculation tanks 122 via the dosing system 3.

[0063] There may be two coagulation reaction tanks 121 , and there are flow holes between the coagulation reaction tank 121 and the flocculation reaction tank 122 , so that the liquid level decreases step by step.

[0064] In a feasible embodiment of the present invention, in order to make the water in the reaction tank 12 enter the sedimentation tank 13 more evenly, the coagulation and sedimentation system 1 also includes a water distribution device 16, which extends from one end of the sedimentation tank 13 to the other end, and the bottom of the water inlet trough of the water distribution device 16 is provided with a plurality of flow holes to make the incoming water enter the sedimentation tank 13 evenly, so as to prevent uneven water distribution caused by the incoming water.

[0065] In addition, an inclined tube filler 14 is provided at the upper part of the sedimentation tank 13. The sludge settles at the inclined tube filler 14 and slides into the sludge discharge device 15 at the lower part of the sedimentation tank 13. The effluent flows over the effluent weir plate 17 above the inclined tube filler 14 and flows into the subsequent flat-plate ceramic membrane filtration system 2.

[0066] More specifically, the sludge discharge device 15 includes multiple sludge hoppers 151, multiple perforated sludge discharge branches 152, and a main sludge discharge pipe 153. Each sludge hopper 151 has a trapezoidal cross-section and a slope greater than 60°. Each sludge hopper 151 is provided with a perforated sludge discharge branch 152, each equipped with a valve. These branches merge into a main sludge discharge pipe 153, which is connected to the water inlet of a sludge discharge pump 154. The sludge discharge pump 154 can be two screw pumps.

[0067] During operation, the sludge level in the sedimentation tank 13 is kept at an appropriate level by regularly discharging sludge. By switching the valve, the sludge hoppers 151 are discharged one by one to prevent uneven sludge discharge caused by blockage of the perforated sludge discharge branch pipe 152 or the sludge discharge main pipe 153. At the same time, a backwash water inlet is provided on the sludge discharge main pipe 153 to prevent blockage.

[0068] In a feasible embodiment of the present invention, the flat-plate ceramic membrane filtration system 2 includes a membrane tank 21 , a clean water tank 22 , a waste water tank 23 and an emptying pump 24 .

[0069] Sedimentation tank 13 is connected to membrane tank 21 via a pipeline. Membrane tank 21 is equipped with multiple sets of flat-plate ceramic membrane assemblies, each with individually replaceable membranes. Membrane tank 21 is used to filter primary purified water. Multiple flat-plate ceramic membrane assemblies form a membrane tower, resulting in a compact structure, high packing density, and minimal floor space. The flat-plate ceramic membrane assemblies have built-in closed water production channels. When multiple flat-plate ceramic membrane assemblies are combined, the produced water is concentrated at the top end cap. A single module has no external water production interface, reducing the number of interfaces and facilitating operation and maintenance. After water enters membrane tank 21, the filtered water is pumped by water production pump 26 to clear water tank 22. Clear water tank 22 holds the filtered primary purified water, which serves as system effluent or backwash water. Wastewater tank 23 holds the backwash water. A drain pump 24 is connected to membrane tank 21 at one end and to wastewater tank 23 at the other. It discharges the backwash water from membrane tank 21 into wastewater tank 23.

[0070] Furthermore, the backwash system 4 includes a backwash pump 41, a backwash agent storage tank 42 and a backwash dosing pump 43. One end of the backwash pump 41 is connected to the clear water tank 22, and the other end is connected to the membrane tank 21. The backwash pump 41 is used to spray backwash water to the flat ceramic membrane assembly; the backwash agent storage tank 42 is used to hold the backwash agent; the backwash dosing pump 43 is connected to the backwash agent storage tank 42, and the backwash dosing pump 43 is used to spray the backwash agent to the flat ceramic membrane assembly.

[0071] The backwashing method is air-water backwashing. The backwashing pump 41 includes a backwashing water pump and a backwashing blower. There can be two backwashing agent storage tanks 42 and two backwashing dosing pumps 43. The backwashing agent storage tanks 42 and the backwashing dosing pumps 43 are arranged in a one-to-one correspondence.

[0072] To ensure the filtration effectiveness of the flat-plate ceramic membrane filtration system 2, the backwash system 4 typically backwashes for 5-15 seconds every hour of operation. During water backwashing, the water production pump 26 is turned off. The backwash pump pumps clean water from the clean water tank through the membrane tower water production pipeline as backwash water, positively pressurizing the membrane to flush contaminant particles adhering to the membrane pores. During air backwashing, the backwash blower is turned on, and compressed air enters the membrane tank through the backwash air pipe at the lower end of the membrane tank, flushing contaminants adhering to the membrane surface.

[0073] In one feasible embodiment of the present invention, the flat-plate ceramic membrane filtration system further includes a spray device 25 for chemically spray-cleaning the flat-plate ceramic membrane assembly. When the membrane water yield decreases, the membrane assembly is first chemically spray-cleaned by the membrane spray device 25. The membrane is then backwashed with air and water by a backwash pump and backwash blower. The backwash water is then discharged into a wastewater tank 23 via a drain pump 24. The backwash wastewater is filtered again to increase the water yield, and the resulting concentrated water is transported to a municipal sewage treatment plant for treatment. The backwash water volume is 3-4 times the membrane flux, and the backwash air volume is approximately 10-20 L / min·m2.

[0074] In a feasible embodiment of the present invention, the dosing system 3 includes a reagent storage tank 31 and a dosing pump 32. One end of the dosing pump 32 is connected to the reagent storage tank 31, and the other end is connected to the reaction tank 12. The reagent storage tank 31 is usually provided with two, respectively for storing coagulant and flocculant. The dosing pump 32 is used to add coagulant to the coagulation reaction tank 121 and can add flocculant to the flocculation reaction tank 122.

[0075] The integrated sewage treatment device provided by the present invention operates as follows: inlet water enters the coagulation reaction tank 121 through the inlet pump 111, is fully mixed with the coagulation reaction tank 121, and then enters the flocculation reaction tank 122. After being fully stirred and mixed with the flocculant, flocs are produced. The water then enters the sedimentation tank 13 through the water distribution device 16. The sedimentation tank 13 is provided with an inclined tube filler 14. The sludge settles at the inclined tube filler 14 and slides down to the sludge hopper 151 at the bottom of the sedimentation tank 13. The effluent flows from the outlet weir plate 17 at the top of the sedimentation tank 13 into the flat-plate ceramic membrane filtration system. Each sludge hopper 151 is connected to a perforated sludge discharge branch pipe 152, which is provided with a valve and merges into a sludge discharge main pipe 153 connected to the water inlet of the sludge pump 154. During operation, the sedimentation tank 13 is kept in a proper position by regular sludge discharge.

[0076] The membrane tank 21 is connected to the outlet weir 17 via the water production pipe. After water enters the membrane tank 21, the filtered water is pumped into the clean water tank 22 by the water production pump 26. When the water production rate of the membrane tank 21 decreases, chemical cleaning and air-water backwashing are required. First, the membrane is chemically sprayed and cleaned. The water inlet pump 111 is turned off, the membrane tank 21 is drained, and the backwash dosing pump 43 sprays a chemical onto the membrane surface to clean contaminants adhering to the membrane surface. The membrane is then backwashed by the backwash pump 41, with a water wash for 5 seconds, a combined air-water backwash for 15 seconds, and a water backwash alone for 5 seconds. During backwashing, water enters the flat ceramic membrane assembly through the water production pipe. Positive pressure backwashing removes contaminants adhering to the membrane pores and surface, supplemented by air flow to thoroughly rinse the membrane. The backwashed water is discharged into the wastewater tank 23 via the drain pump 24. Backwash wastewater can be filtered again to increase water production, and the resulting concentrated water is transported to a municipal sewage treatment plant for treatment. The membrane tank 21, clean water tank 22, and wastewater tank 23 are all equipped with drain ports equipped with valves and quick connectors to facilitate emptying the tanks via a drain pump.

[0077] In addition, the outlet water online detection 27 takes water from the clean water tank 22 and detects the water quality parameters of the outlet water in real time.

[0078] Therefore, the integrated sewage treatment device provided by the utility model modularizes the coagulation and sedimentation system 1, the flat ceramic membrane filtration system 2, the dosing system 3 and the backwashing system 4, which is easy to install, transport and maintain. The start-up treatment module can be selected according to different water quality. It is convenient and flexible to use and optimizes the sewage treatment effect.

[0079] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An integrated sewage treatment device, characterized in that: include: A coagulation and sedimentation system (1) is used to coagulate and sediment the sewage to obtain primary treated water; A flat ceramic membrane filtration system (2) is provided downstream of the coagulation and sedimentation system (1) and is used to filter the primary treated water to obtain secondary treated water; A dosing system (3) for adding drugs to the coagulation and sedimentation system (1); A backwashing system (4) for backwashing the flat-plate ceramic membrane filtration system (2); Furthermore, the coagulation and sedimentation system (1), the flat-plate ceramic membrane filtration system (2), the dosing system (3) and the backwashing system (4) are all modularly configured and are located in the same container.

2. The integrated sewage treatment device according to claim 1, characterized in that: The coagulation and sedimentation system (1) comprises: Water inlet device (11); A reaction tank (12) is used for the sewage to fully react with the reagent to produce flocs; A sedimentation tank (13) is provided downstream of the reaction tank (12), and an inclined tube filler (14) is provided in the sedimentation tank (13), and the inclined tube filler (14) is used for the flocculent sedimentation sludge; The mud discharge device (15) is connected to the sedimentation tank (13).

3. The integrated sewage treatment device according to claim 2, characterized in that: The water inlet device (11) comprises: an inlet pump (111), for delivering inlet water to the reaction tank; The water quality online detector (112) and the flow meter are both arranged on the water inlet pipe and are used to monitor the water quality and flow rate of the inlet water in real time.

4. The integrated sewage treatment device according to claim 2, characterized in that: The reaction tank (12) comprises: A coagulation reaction tank (121) for mixing sewage with a coagulant; The flocculation reaction tank (122) is used for stirring and mixing the tiny flocs in the sewage with the flocculant to produce the flocs.

5. The integrated sewage treatment device according to claim 2, characterized in that: The coagulation and sedimentation system (1) further comprises: A water distribution device (16) extends from one end of the sedimentation tank (13) to the other end, and a plurality of flow holes are provided at the bottom of the water inlet trough of the water distribution device (16) so that the water can enter the sedimentation tank (13) evenly; The outlet weir plate (17) is arranged on one side of the top of the sedimentation tank (13).

6. The integrated sewage treatment device according to claim 2, characterized in that: The mud discharge device (15) comprises: A plurality of sludge hoppers (151), each of the sludge hoppers (151) having a trapezoidal cross-section; A plurality of perforated mud discharge branch pipes (152) are provided corresponding to the sludge hoppers (151) one by one; and each of the perforated mud discharge branch pipes (152) is provided with a valve; A mud discharge main pipe (153), one end of which is connected to each of the perforated mud discharge branch pipes (152); A mud discharge pump (154) has a water inlet connected to the other end of the mud discharge main pipe (153), and a water outlet connected to a sewer.

7. The integrated sewage treatment device according to claim 1, characterized in that: The flat-plate ceramic membrane filtration system (2) comprises: A membrane pool (21) is provided with a plurality of flat ceramic membrane assemblies, wherein the membranes can be replaced individually, and the membrane pool (21) is used for filtering primary purified water; A clean water tank (22) is used to hold the filtered primary purified water as system effluent or backwash water; a wastewater tank (23) for receiving backwash water; An emptying pump (24) is connected to the membrane pool (21) at one end and to the wastewater pool (23) at the other end. The emptying pump (24) is used to discharge the backwashed water in the membrane pool (21) into the wastewater pool (23).

8. The integrated sewage treatment device according to claim 2, characterized in that: The dosing system (3) comprises: pharmaceutical storage tank (31); A dosing pump (32) is connected to the drug storage tank (31) at one end and to the reaction tank (12) at the other end.

9. The integrated sewage treatment device according to claim 7, characterized in that: The backwash system (4) comprises: a backwash pump (41), one end of which is in communication with the clean water tank (22) and the other end of which is in communication with the membrane tank (21), the backwash pump (41) being used to spray the backwash water to the flat ceramic membrane assembly; A backwash agent storage tank (42) for storing backwash agent; A backwashing dosing pump (43) is connected to the backwashing agent storage tank (42), and the backwashing dosing pump (43) is used to spray the backwashing agent onto the flat ceramic membrane assembly.

10. The integrated sewage treatment device according to claim 7, characterized in that: The flat-plate ceramic membrane filtration system further comprises: A spraying device (25) is used for chemically spraying and cleaning the flat ceramic membrane assembly.

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