Integrated municipal sewage treatment device

Abstract

The invention relates to the technical field of sewage treatment, and particularly discloses an integrated municipal sewage treatment device which comprises a sewage treatment tank, a plurality of partition plates are arranged in the sewage treatment tank and divide the sewage treatment tank into an adjusting tank, a sedimentation tank, an MBR reaction tank, a sedimentation tank, an intermediate water tank and a drainage tank, and a dosing device is communicated with the adjusting tank. The aeration device is respectively communicated with the regulating tank and the MBR reaction tank, and the filtering device is connected between the middle water tank and the drainage tank. The sewage treatment tank is divided into a plurality of sewage treatment pools by the partition plates, sewage treatment is performed through the plurality of sewage treatment pools matched with the dosing device, the aeration device and the filtering device, the sewage treatment efficiency is high, the quality of treated effluent is guaranteed, the whole integrated skid-mounted installation is realized, the layout is reasonable, the occupied space is small, and the cost is low. The construction work amount is reduced, the cost is saved, unified control is achieved through the control cabinet, operation control is simple and rapid, and flexible use can be achieved according to different sewage water qualities and water volumes.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an integrated municipal sewage treatment device. Background Art

[0002] Municipal sewage refers to wastewater generated by urban residents in their daily life, commercial activities, industrial production, etc., including domestic sewage, industrial wastewater and rainwater runoff. Domestic sewage mainly comes from daily life activities in households, schools, hospitals, office buildings and other places, such as washing, cooking, excretion, etc.; industrial wastewater comes from various industrial enterprises in the city, covering many industries such as chemical, pharmaceutical, electronics, textile, food processing, etc.; rainwater runoff is wastewater formed by washing the urban ground during rainfall or snowfall; municipal sewage is a mixture of domestic sewage, industrial wastewater and rainwater runoff, with complex and diverse composition. In addition to common pollutants such as organic matter, nitrogen, phosphorus, and microorganisms, it may also contain heavy metals, toxic and harmful substances, and difficult-to-degrade organic matter.

[0003] In order to avoid the waste of water resources and reduce the pollution of municipal sewage to the environment, municipal sewage needs to be treated. Sewage can be discharged or reused only after it is treated to meet the standards. Municipal sewage is generally collected and sent to the sewage treatment plant for treatment. The treatment of municipal sewage involves many aspects, and it is necessary to make a comprehensive plan for the sewer system, the location and treatment process of the sewage treatment plant, the utilization and discharge requirements of the treated sewage, etc., resulting in a large amount of construction work, a long construction period, a large area of ​​overall facilities, high energy consumption, and high operating costs. Fixed and immovable sewage treatment equipment cannot be flexibly applied to the treatment needs of municipal sewage.

[0004] Therefore, it is necessary to propose an integrated municipal sewage treatment device to overcome the defects of the prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and provide an integrated municipal sewage treatment device.

[0006] The technical solution of the present invention is: An integrated municipal sewage treatment device comprises a skid frame, a sewage treatment device, a dosing device, an aeration device and a filtration device, wherein the sewage treatment device, the dosing device, the aeration device and the filtration device are all arranged on the skid frame, the sewage treatment device comprises a sewage treatment tank, a plurality of partitions are arranged in the sewage treatment tank, the plurality of partitions separate the sewage treatment tank into a regulating tank, a sedimentation tank, an MBR reaction tank, a sedimentation tank, an intermediate water tank and a drainage tank, the regulating tank, the sedimentation tank, the MBR reaction tank, the sedimentation tank, the intermediate water tank and the drainage tank are connected in sequence, an inlet tank is arranged on one side outside the regulating tank, an inclined grille is arranged in the inlet tank, the dosing device is connected with the regulating tank, the aeration device is respectively connected with the regulating tank and the MBR reaction tank, the filtration device is connected between the intermediate water tank and the drainage tank, and an MBR membrane assembly is arranged in the MBR reaction tank.

[0007] Preferably, a first water flow grid is provided on the side wall of the water inlet tank close to the regulating tank, a water inlet pipe is provided on the side wall of the water inlet tank away from the regulating tank, a second water flow grid is provided on the partition between the regulating tank and the sedimentation tank, a water collecting tank is provided in the sedimentation tank, a first water flow hole connected with the water collecting tank is provided on the partition of the MBR reaction tank close to the sedimentation tank, an overflow weir is provided on the inner wall of the sedimentation tank, a central water pipe is provided in the sedimentation tank, a second water flow hole corresponding to the overflow weir is provided on the partition between the sedimentation tank and the intermediate water tank, an extraction pump is provided between the MBR reaction tank and the sedimentation tank, the outlet of the extraction pump is connected with the inside of the central water pipe, a conical inlet is provided at the lower part of the central water pipe, a reflecting plate is provided below the conical inlet, and two inclined baffles are symmetrically provided at the bottom of the sedimentation tank.

[0008] Preferably, a tank cover is provided on the top of the sewage treatment tank, and an exhaust pipe is provided on the tank cover.

[0009] Preferably, the dosing device includes a dosing tank, a stirring motor, a stirring shaft and a dosing pump. The stirring motor is arranged at the top of the dosing tank, the stirring shaft is arranged in the dosing tank, the stirring shaft and the output shaft of the stirring motor are drivingly connected, the inlet of the dosing pump is connected to the inside of the dosing tank, the outlet of the dosing pump is connected to the inside of the regulating tank, a feeding hopper and a water injection pipe are arranged on the top of the dosing tank, and a liquid level meter is arranged on the outer wall of the dosing tank.

[0010] Preferably, the aeration device includes an air compressor, a plurality of first aeration tubes and a plurality of second aeration tubes, the plurality of first aeration tubes are arranged in parallel at the bottom of the regulating tank, the plurality of second aeration tubes are arranged in parallel at the bottom of the MBR reaction tank, and both the first aeration tubes and the second aeration tubes are connected to the air compressor.

[0011] Preferably, the filtering device includes a quartz sand filter and an activated carbon adsorption tank, which are connected in series, the filtering inlet of the quartz sand filter is connected to the intermediate water pool, and the filtering outlet of the activated carbon adsorption tank is connected to the drainage pool.

[0012] Preferably, a submersible pump is provided in the intermediate water pool, the outlet of the submersible pump is connected to the filter inlet of the quartz sand filter, and a lifting pump is provided between the filter outlet of the activated carbon adsorption tank and the drainage pool.

[0013] Preferably, the drainage tank is connected to a drainage pump, the outlet of the drainage pump is connected to a drainage pipeline and a backwash pipeline through a tee, the backwash pipeline is connected to the backwash inlet of the quartz sand filter, and the backwash outlet of the activated carbon adsorption tank is connected to the regulating tank.

[0014] Preferably, an integrated municipal sewage treatment device also includes a sewage discharge device, which includes a mud flushing pipe, a sewage manifold, a sewage pump and a mud discharge pipe. The mud flushing pipe is arranged throughout the regulating tank and the sedimentation tank. A flushing pipe is arranged at one end of the mud flushing pipe. The sewage manifold is arranged on the outer side of the sewage treatment tank. The regulating tank, the sedimentation tank and the MBR reaction tank are all provided with sewage pipes, which are connected with the sewage manifold. One end of the mud discharge pipe extends into the sedimentation tank, and the other end of the mud discharge pipe is connected with the inlet of the sewage pump. The outlet of the sewage pump is connected to the sewage manifold.

[0015] Preferably, an integrated municipal sewage treatment device also includes a control cabinet, which is arranged on the skid frame, and the stirring motor, dosing pump, extraction pump, lifting pump, drainage pump and sewage pump are all electrically connected to the control cabinet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting partitions in the sewage treatment tank, the sewage treatment tank is divided into multiple sewage treatment tanks. The sewage enters the regulating tank after filtering large suspended solids through the grille in the water inlet tank. The dosing device adds diluted chemical agents to the sewage in the regulating tank, and aeration is performed through the first aeration pipe to accelerate the mixing of the agent and sewage to form floccules, which enter the sedimentation tank for gravity sedimentation. The sewage is separated from the MBR membrane assembly in the MBR reaction tank, and the separation effect and efficiency are improved through the second aeration pipe. The sewage is transported to the central water pipe in the sedimentation tank by the extraction pump. The vertical flow sedimentation method is used in the sedimentation tank to further realize the sedimentation of suspended solids. The settled water flows through the quartz sand filter and the activated carbon adsorption tank in turn to remove odor and enter the drainage tank for storage. The sewage treatment efficiency is high and the water quality of the treated effluent is guaranteed; 2. The overall integrated skid installation has a reasonable layout and occupies a small space, which reduces the construction workload and saves costs. It is uniformly controlled by the control cabinet, and the operation control is simple and fast. It can be flexibly used according to different sewage quality and water volume, and is suitable for municipal sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention (with the box cover hidden); Figure 3 This is a schematic diagram of the top view of the structure of the present invention (with the box cover hidden); Figure 4 It is a schematic diagram of the three-dimensional structure of the sewage treatment tank of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of a sewage treatment tank of the present invention; Figure 6 It is a schematic diagram of the central water pipe structure of the present invention.

[0018] Among them, 1. skid frame; 2. sewage treatment tank; 3. partition; 4. regulating tank; 5. sedimentation tank; 6. MBR reaction tank; 7. sedimentation tank; 8. intermediate water tank; 9. drainage tank; 10. water inlet tank; 11. first water grid; 12. water inlet pipe; 13. second water grid; 14. water collection tank; 15. first water hole; 16. overflow weir; 17. central water pipe; 18. second water hole; 19. conical inlet; 20. reflector; 21. baffle; 22. dosing tank; 23. stirring motor; 24. stirring shaft; 25 , dosing pump; 26, feeding hopper; 27, water injection pipe; 28, liquid level meter; 29, air compressor; 30, first aeration pipe; 31, second aeration pipe; 32, quartz sand filter; 33, activated carbon adsorption tank; 34, submersible pump; 35, lifting pump; 36, drainage pump; 37, drainage pipeline; 38, backwashing pipeline; 39, mud flushing pipe; 40, sewage manifold; 41, sewage pump; 42, mud pipe; 43, flushing pipe; 44, sewage pipe; 45, extraction pump; 46, control cabinet; 47, box cover; 48, exhaust pipe. DETAILED DESCRIPTION

[0019] In order to make the technical means, technical features, invention objectives and technical effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific illustrations.

[0020] like Figure 1-Figure 3 As shown, an integrated municipal sewage treatment device includes a skid frame 1, a sewage treatment device, a dosing device, an aeration device, a filtering device, a sewage discharge device and a control cabinet 46. The sewage treatment device, the dosing device, the aeration device, the filtering device, the sewage discharge device and the control cabinet 46 are all installed on the skid frame 1. The integrated installation has a compact design and occupies a small area. It is easy to install and move, and can meet the needs of municipal sewage treatment in various conditions.

[0021] like Figure 1-Figure 5As shown, the sewage treatment device includes a sewage treatment tank 2 and a box cover 47. The sewage treatment tank 2 is a structure with an open top. The box cover 47 is used to seal the open top of the sewage treatment tank 2 to prevent the interior of the sewage treatment tank 2 from being contaminated by the outside. At the same time, the interior of the sewage treatment tank 2 can be maintained and cleaned by removing the box cover 47. An exhaust pipe 48 is processed on the box cover 47. The exhaust pipe 48 keeps the internal and external air pressures of the sewage treatment tank 2 consistent to avoid the danger of increased internal pressure in the sewage treatment tank 2. A plurality of partitions 3 are integrally installed inside the sewage treatment tank 2. The plurality of partitions 3 divide the interior of the sewage treatment tank 2 into a regulating tank 4, a sedimentation tank 5, an MBR reaction tank 6, a sedimentation tank 7, an intermediate water tank 8 and a drainage tank 9. The regulating tank 4, the sedimentation tank 5 , MBR reaction tank 6, sedimentation tank 7, intermediate water tank 8 and drainage tank 9 are connected in sequence to realize the flow of sewage and thus achieve sewage treatment. An inlet tank 10 is connected to the outer side of the regulating tank 4. A grid is installed inside the inlet tank 10. The grid is installed obliquely. An inlet pipe 12 is installed on the side wall of the inlet tank 10 away from the regulating tank 4. The sewage to be treated is transported to the inlet tank 10 through the inlet pipe 12. Large suspended matter and floating matter in the sewage are intercepted by the grid to prevent large impurities from entering the subsequent treatment process, protect subsequent equipment from damage, and improve the efficiency of subsequent treatment. A first water flow grid 11 is processed on the side wall of the inlet tank 10 close to the regulating tank 4. The sewage is intercepted by the grid and flows into the regulating tank 4 through the first water flow grid 11.

[0022] like Figure 1-Figure 3 As shown, the dosing device is connected to the regulating tank 4, and the dosing device is used for mixing chemicals (such as flocculants) and adding dissolved chemical solution into the regulating tank 4. The dosing device includes a dosing tank 22, a stirring motor 23, a stirring shaft 24 and a dosing pump 25. The dosing tank 22 and the dosing pump 25 are both installed on the skid frame 1 on one side of the sewage treatment tank 2. The stirring motor 23 is installed on the top of the dosing tank 22, and the stirring shaft 24 is located inside the dosing tank 22. The upper end of the stirring shaft 24 extends to the outside of the dosing tank 22 and is connected to the output shaft of the stirring motor 23. A feeding hopper 26 and a water injection pipe 27 are connected to the top of the dosing tank 22. The chemical Chemical agents are put into the dosing tank 22, and an external water source is connected through the water injection pipe 27. Water is injected into the dosing tank 22, and the stirring shaft 24 is driven to rotate by the stirring motor 23 to accelerate the dissolution and dilution of the chemical agents in the water. The inlet of the dosing pump 25 is connected to the inside of the dosing tank 22 through a pipeline, and the outlet of the dosing pump 25 is connected to the inside of the regulating tank 4 through a pipeline. The dosing pump 25 is started to transport the mixed chemical solution to the regulating tank 4, and the chemical solution is aggregated into floccules with the suspended particles in the sewage. A liquid level meter 28 is installed on the outer wall of the dosing tank 22 to observe the amount of the agent in the dosing tank 22, so as to facilitate timely replenishment and ensure the needs of normal operation.

[0023] like Figure 1-Figure 3 As shown, the aeration device includes an air compressor 29, a plurality of first aeration pipes 30 and a plurality of second aeration pipes 31. The plurality of first aeration pipes 30 are installed in parallel at the inner bottom end of the regulating tank 4, and the plurality of second aeration pipes 31 are installed in parallel at the inner bottom end of the MBR reaction tank 6. The first aeration pipes 30 and the second aeration pipes 31 are both connected to the air compressor 29 through pipelines. The air compressor 29 supplies high-pressure air to the first aeration pipes 30 and the second aeration pipes 31. The air provided by the air compressor 29 is released into the regulating tank 4 through the small holes on the first aeration pipes 30, driving the sewage to flow, forming a stirring effect, accelerating the contact and mixing of chemical agents and sewage, and improving the effect of sewage treatment.

[0024] like Figure 1-Figure 3 As shown, a second water-passing grid 13 is processed on the partition 3 between the regulating tank 4 and the sedimentation tank 5. The sewage mixed with the chemical agent flows into the sedimentation tank 5 through the second water-passing grid 13. The floccules formed by the suspended particles are settled to the bottom by gravity sedimentation in the sedimentation tank 5. A water collecting trough 14 is installed on the upper side of the interior of the sedimentation tank 5. The side wall of the water collecting trough 14 is processed into a serrated structure to facilitate the upper clear liquid after sedimentation to enter the water collecting trough 14 through the serration of the water collecting trough 14. The water collecting trough 14 can be connected to the partition 3 by threads, and the liquid level of the upper clear liquid can be adjusted by adjusting the installation position of the water collecting trough 14. A first water-passing hole 15 is processed on the partition 3 of the MBR reaction tank 6 close to the sedimentation tank 5. The first water-passing hole 15 corresponds to the water collecting trough 14. The water in the water collecting trough 14 flows into the MBR reaction tank 6 through the first water-passing hole 15.

[0025] like Figure 1-Figure 3 As shown, an MBR membrane assembly is installed in the MBR reaction tank 6, and the number of the MBR membrane assemblies can be increased or decreased according to the degree of sewage treatment. The sewage flowing into the MBR reaction tank 6 through the first water hole 15 contacts the MBR membrane assembly for solid-liquid separation. At the same time, the air delivered by the air compressor 29 is exposed in the MBR reaction tank 6 through the second aeration pipe 31 to provide oxygen, so that the microorganisms can breathe, thereby decomposing organic matter. At the same time, aeration can also produce a stirring effect to promote the mixing of suspended matter and the contact between suspended matter and microorganisms, thereby improving efficiency.

[0026] like Figure 1-Figure 3 and Figure 6As shown, sewage is transferred between the MBR reaction tank 6 and the sedimentation tank 7 by an extraction pump 45, that is, the inlet of the extraction pump 45 is connected to the inside of the MBR reaction tank 6, and the outlet of the extraction pump 45 is connected to the inside of the sedimentation tank 7. Specifically, a central water pipe 17 is installed inside the sedimentation tank 7, and the outlet of the extraction pump 45 is connected to the inside of the central water pipe 17 through a pipeline. The extraction pump 45 extracts water from the MBR reaction tank 6 and pumps it to the central water pipe 17, and then the water flows into the sedimentation tank 7. A conical inlet 19 is processed at the lower end of the central water pipe 17, and a reflector 20 is connected below the conical inlet 19. When sewage enters the central water pipe 17, a water flow impact is generated in the vertical direction. The suspended matter is precipitated to the bottom of the sedimentation tank 7 to further remove the solid particles in the sewage. Two inclined baffles 21 are symmetrically installed at the bottom of the sedimentation tank 7 to gather the precipitated suspended matter for subsequent discharge. An overflow weir 16 is processed on the four side walls on the upper side of the sedimentation tank 7. The edge of the overflow weir 16 is processed into a serrated structure. The upper layer of clear water formed by precipitation flows into the overflow weir 16 through the serrated structure. A second water hole 18 corresponding to the overflow weir 16 is processed on the partition 3 between the sedimentation tank 7 and the intermediate water tank 8. The clear water flows into the intermediate water tank 8 through the second water hole 18 for buffering. A submersible pump 34 is installed in the intermediate water tank 8 to realize water pumping.

[0027] like Figure 1-Figure 3 As shown, the filtering device includes a quartz sand filter 32 and an activated carbon adsorption tank 33, which are connected in series. Specifically, the filtering inlet of the quartz sand filter 32 is connected to the outlet of the submersible pump 34, the filtering outlet of the quartz sand filter 32 is connected to the filtering inlet of the activated carbon adsorption tank 33, and the filtering outlet of the activated carbon adsorption tank 33 is connected to the drainage pool 9 through the lifting pump 35. The water in the intermediate water pool 8 is transported by the submersible pump 34 and flows through the quartz sand filter 32 and the activated carbon adsorption tank 33 in sequence to filter and adsorb odor, organic solutes, etc., and then the filtered water is transported to the drainage pool 9 for storage through the lifting pump 35; The drainage pool 9 is connected to a drainage pump 36, the inlet of the drainage pump 36 is connected to the inside of the drainage pool 9, and the outlet of the drainage pump 36 is installed with a tee, through which a drainage pipeline 37 and a backwashing pipeline 38 are respectively connected, and the drainage pipeline 37 realizes the external discharge or recovery of clean water, and the quartz sand filter 32 and the activated carbon adsorption tank 33 are backwashed through the backwashing pipeline 38 to improve the filtering effect of the quartz sand filter 32 and the activated carbon adsorption tank 33. Specifically, the backwashing pipeline 38 is connected to the backwashing inlet of the quartz sand filter 32, and the backwashing outlet of the quartz sand filter 32 is connected to the backwashing inlet of the activated carbon adsorption tank 33, and the backwashing outlet of the activated carbon adsorption tank 33 is connected to the regulating tank 4 through a pipeline, so that the sewage generated by backwashing is re-filtered and circulated to avoid wasting water resources.

[0028] like Figure 1-Figure 3 As shown, the sewage discharge device includes a mud flushing pipe 39, a sewage discharge manifold 40, a sewage pump 41 and a mud discharge pipe 42. The mud flushing pipe 39 is installed through the inner bottom side of the regulating tank 4 and the sedimentation tank 5. One end of the mud flushing pipe 39 passes through the side wall of the regulating tank 4 and extends to the outside of the regulating tank 4 and is connected to a flushing pipe 43. The flushing pipe 43 is connected to an external water source to provide flushing water. The flushing water can be sprayed out through the small holes processed on the wall of the mud flushing pipe 39 to flush the sludge at the bottom of the regulating tank 4 and the sedimentation tank 5. In order to facilitate the flow of sludge, the bottom of the regulating tank 4 and the sedimentation tank 5 can be processed into an inclined structure. The manifold 40 is installed on the outer side of the sewage treatment tank 2, and sewage pipes 44 are installed on the side walls of the regulating tank 4, the sedimentation tank 5 and the MBR reaction tank 6. The sewage pipes 44 are detachably connected to the sewage manifold 40, and the sludge in the regulating tank 4, the sedimentation tank 5 and the MBR reaction tank 6 are collected in the sewage manifold 40 for unified discharge. One end of the sludge pipe 42 extends to the bottom of the sedimentation tank 7, and the other end of the sludge pipe 42 is connected to the inlet of the sewage pump 41. The outlet of the sewage pump 41 is connected to the sewage manifold 40, which is used to extract the sludge in the sedimentation tank 7 and discharge it into the sewage manifold 40.

[0029] like Figure 1-Figure 3 As shown, the control cabinet 46 is installed on the skid frame 1, and the stirring motor 23, the dosing pump 25, the extraction pump 45, the lifting pump 35, the drainage pump 36 and the sewage pump 41 are all electrically connected to the control cabinet 46 and are uniformly controlled by the control cabinet 46 to achieve efficient and convenient sewage treatment process.

[0030] The working principle of the present invention is: The sewage to be treated enters the water inlet tank 10 through the water inlet pipe 12. The larger suspended solids and floating solids in the sewage are intercepted by the grille and enter the regulating tank 4 from the first water grid 11. The dosing pump 25 and the air compressor 29 are started. The dosing pump 25 pumps the chemical agent mixed solution into the regulating tank 4. The air compressor 29 delivers high-pressure air through the first aeration pipe 30 to aerate the regulating tank 4. The chemical agent solution and the suspended particles in the sewage are aggregated into floccules, which enter the sedimentation tank 5 to settle the floccules. The upper clear liquid after sedimentation enters the MBR reaction tank 6 through the water collection tank 14 and the first water hole 15 to separate the solid and liquid with the MBR membrane assembly. At the same time, the air compressor 29 performs aeration through the second aeration pipe 31. The extraction pump 45 is started to extract the water in the MBR reaction tank 6 through the pipeline to the central water pipe 17 , the suspended matter is further settled by vertical flow sedimentation to form an upper clear liquid. The upper clear liquid flows into the overflow weir 16 and then flows into the intermediate water tank 8 through the second water hole 18. The submersible pump 34 in the intermediate water tank 8 is started to pump the water through the quartz sand filter 32 and the activated carbon adsorption tank 33 in sequence. After the odor, organic solutes, etc. are adsorbed and removed, the sewage is treated. The water is transported to the drainage tank 9 for storage by the lifting pump 35. The clean water in the drainage tank 9 can be discharged or recovered by starting the drainage pump 36, and the quartz sand filter 32 and the activated carbon adsorption tank 33 can be backwashed through the backwashing pipeline 38 connected to the outlet of the drainage pump 36 to restore and improve the filtering and adsorption effects of the quartz sand filter 32 and the activated carbon adsorption tank 33 to ensure water quality. The sewage generated by backwashing is returned to the regulating tank 4 for further treatment.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. An integrated municipal sewage treatment device, characterized in that: The invention comprises a skid frame (1), a sewage treatment device, a dosing device, an aeration device and a filtration device, wherein the sewage treatment device, the dosing device, the aeration device and the filtration device are all arranged on the skid frame (1), the sewage treatment device comprises a sewage treatment tank (2), a plurality of partitions (3) are arranged in the sewage treatment tank (2), and the plurality of partitions (3) separate the sewage treatment tank (2) into a regulating tank (4), a sedimentation tank (5), an MBR reaction tank (6), a sedimentation tank (7), an intermediate water tank (8) and a drainage tank (9), wherein the regulating tank (4), a sedimentation tank (5), an MBR reaction tank (6), a settling tank (7), an intermediate water tank (8) and a drainage tank (9) are connected in sequence; an inlet tank (10) is arranged on one side outside the regulating tank (4); an inclined grid is arranged in the inlet tank (10); the dosing device is connected to the regulating tank (4); the aeration device is connected to the regulating tank (4) and the MBR reaction tank (6) respectively; the filtering device is connected between the intermediate water tank (8) and the drainage tank (9); and an MBR membrane assembly is arranged in the MBR reaction tank (6).

2. The integrated municipal sewage treatment device according to claim 1, characterized in that: A first water-passing grid (11) is arranged on the side wall of the water inlet tank (10) close to the regulating tank (4), a water inlet pipe (12) is arranged on the side wall of the water inlet tank (10) away from the regulating tank (4), a second water-passing grid (13) is arranged on the partition (3) between the regulating tank (4) and the sedimentation tank (5), a water collecting tank (14) is arranged in the sedimentation tank (5), a first water-passing hole (15) in communication with the water collecting tank (14) is arranged on the partition (3) of the MBR reaction tank (6) close to the sedimentation tank (5), an overflow weir (16) is arranged on the inner side wall of the sedimentation tank (7), and a water-collecting tank (14) is arranged in the sedimentation tank (5). A central water pipe (17) is arranged in the pool (7); a second water hole (18) corresponding to the overflow weir (16) is arranged on the partition (3) between the sedimentation tank (7) and the intermediate water tank (8); an extraction pump (45) is arranged between the MBR reaction tank (6) and the sedimentation tank (7); the outlet of the extraction pump (45) is connected to the inside of the central water pipe (17); a conical inlet (19) is arranged at the lower part of the central water pipe (17); a reflection plate (20) is arranged below the conical inlet (19); and two inclined baffles (21) are symmetrically arranged at the bottom of the sedimentation tank (7).

3. The integrated municipal sewage treatment device according to claim 1, characterized in that: A tank cover (47) is provided on the top of the sewage treatment tank (2), and an exhaust pipe (48) is provided on the tank cover (47).

4. The integrated municipal sewage treatment device according to claim 1, characterized in that: The dosing device comprises a dosing tank (22), a stirring motor (23), a stirring shaft (24) and a dosing pump (25); the stirring motor (23) is arranged at the top of the dosing tank (22); the stirring shaft (24) is arranged in the dosing tank (22); the stirring shaft (24) and the output shaft of the stirring motor (23) are drivingly connected; the inlet of the dosing pump (25) is communicated with the inside of the dosing tank (22); the outlet of the dosing pump (25) is communicated with the inside of the regulating tank (4); a feeding hopper (26) and a water injection pipe (27) are arranged at the top of the dosing tank (22); and a liquid level meter (28) is arranged on the outer wall of the dosing tank (22).

5. The integrated municipal sewage treatment device according to claim 1, characterized in that: The aeration device comprises an air compressor (29), a plurality of first aeration pipes (30) and a plurality of second aeration pipes (31); the plurality of first aeration pipes (30) are arranged in parallel at the bottom of the regulating tank (4); the plurality of second aeration pipes (31) are arranged in parallel at the bottom of the MBR reaction tank (6); and both the first aeration pipes (30) and the second aeration pipes (31) are connected to the air compressor (29).

6. The integrated municipal sewage treatment device according to claim 1, characterized in that: The filtering device comprises a quartz sand filter (32) and an activated carbon adsorption tank (33), wherein the quartz sand filter (32) and the activated carbon adsorption tank (33) are connected in series, the filtering inlet of the quartz sand filter (32) is connected to the intermediate water pool (8), and the filtering outlet of the activated carbon adsorption tank (33) is connected to the drainage pool (9).

7. The integrated municipal sewage treatment device according to claim 6, characterized in that: A submersible pump (34) is provided in the intermediate water pool (8), the outlet of the submersible pump (34) is connected to the filter inlet of the quartz sand filter (32), and a lifting pump (35) is provided between the filter outlet of the activated carbon adsorption tank (33) and the drainage pool (9).

8. The integrated municipal sewage treatment device according to claim 7, characterized in that: The drainage tank (9) is connected to a drainage pump (36); the outlet of the drainage pump (36) is connected to a drainage pipeline (37) and a backwash pipeline (38) via a tee; the backwash pipeline (38) is connected to a backwash inlet of a quartz sand filter (32); and the backwash outlet of the activated carbon adsorption tank (33) is connected to the regulating tank (4).

9. The integrated municipal sewage treatment device according to claim 8, characterized in that: The sewage treatment tank (2) further comprises a sewage discharge device, the sewage discharge device comprising a mud flushing pipe (39), a sewage discharge manifold (40), a sewage discharge pump (41) and a mud discharge pipe (42). The mud flushing pipe (39) is arranged to penetrate the regulating tank (4) and the sedimentation tank (5). One end of the mud flushing pipe (39) is provided with a flushing connection pipe (43). The sewage discharge manifold (40) is arranged on one side outside the sewage treatment tank (2). The regulating tank (4), the sedimentation tank (5) and the MBR reaction tank (6) are all provided with sewage discharge connection pipes (44). The sewage discharge connection pipes (44) are connected to the sewage discharge manifold (40). One end of the mud discharge pipe (42) extends into the sedimentation tank (7). The other end of the mud discharge pipe (42) is connected to the inlet of the sewage discharge pump (41). The outlet of the sewage discharge pump (41) is connected to the sewage discharge manifold (40).

10. The integrated municipal sewage treatment device according to claim 9, characterized in that: It also includes a control cabinet (46), which is arranged on the skid frame (1), and the stirring motor (23), the dosing pump (25), the extraction pump (45), the lifting pump (35), the drainage pump (36) and the sewage pump (41) are all electrically connected to the control cabinet (46).

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