Integrated domestic sewage treatment device

Abstract

The utility model discloses an integrated domestic sewage treatment device, which belongs to the technical field of sewage treatment and comprises a sewage treatment tank, the sewage treatment tank is divided into an anaerobic tank, an anoxic tank, an aerobic tank, an MBR (membrane bioreactor) filter tank, an equipment room and a clean water tank through partition plates, and partition plates of the anaerobic tank, the anoxic tank, the aerobic tank and the MBR filter tank are all provided with water outlets. An aeration assembly and a sewage purification assembly are arranged in each of the anaerobic tank, the anoxic tank and the aerobic tank, the anaerobic tank is connected with a sewage inlet pipeline, an MBR membrane assembly is arranged in the MBR filter tank, an auxiliary cleaning assembly is arranged in the equipment room, the auxiliary cleaning assembly is connected with the MBR membrane assembly through an auxiliary cleaning pipeline, and the auxiliary cleaning assembly is connected with the clean water tank through an auxiliary cleaning pipeline. An overflow port is formed in the clean water tank; the sewage treatment device is provided with the sewage treatment tank, and the sewage treatment tank integrates sewage collection, treatment and discharge through a biological treatment technology and a membrane separation technology, so that the sewage treatment efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to an integrated domestic sewage treatment device. Background Art

[0002] With the acceleration of the urbanization process and the continuous growth of the population, the discharge of domestic sewage has been increasing year by year. Traditional sewage treatment methods often have problems such as large floor area, long treatment cycle, and high operation and maintenance costs, and can no longer meet the dual standards of sewage treatment efficiency and environmental protection requirements in modern society. Among the existing sewage treatment technologies, biological treatment technology is widely used because of its high degradation efficiency of organic matter and low energy consumption. However, traditional biological treatment technologies mostly adopt a decentralized treatment mode, with problems such as large floor area, low treatment efficiency, and difficult management and maintenance. Therefore, how to provide an integrated domestic sewage treatment device with higher treatment efficiency is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0003] The main purpose of the utility model is to provide an integrated domestic sewage treatment device to solve the above technical problems. The device is provided with a sewage treatment pool, and within the sewage treatment pool, through two methods of biological treatment technology and membrane separation technology, it integrates sewage collection, treatment, and discharge, with higher sewage treatment efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solution:

[0005] An integrated domestic sewage treatment device, including a sewage treatment pool, the interior of the sewage treatment pool is divided into an anaerobic pool, an anoxic pool, an aerobic pool, an MBR filter pool, an equipment room, and a clear water pool by partitions. Outlet ports are provided on the partitions between the anaerobic pool, the anoxic pool, the aerobic pool, and the MBR filter pool. Aeration components and sewage purification components are provided in the anaerobic pool, the anoxic pool, and the aerobic pool. The anaerobic pool is connected to a sewage inlet pipeline. An MBR membrane component is provided in the MBR filter pool. An MBR filter pool reflux pump is also provided in the MBR filter pool. The MBR filter pool reflux pump is connected to the anaerobic pool through a sludge reflux pipeline. An aerobic pool reflux pump is provided in the aerobic pool. The aerobic pool reflux pump is communicated with the anoxic pool through a nitrification liquid reflux pipeline. An auxiliary cleaning component is provided in the equipment room. The auxiliary cleaning component is connected to the MBR membrane component through an auxiliary cleaning pipeline. The auxiliary cleaning component is also connected to the clear water pool through the auxiliary cleaning pipeline. An overflow port is provided in the clear water pool.

[0006] Further, the aeration assembly includes aeration branch pipes, aeration heads and an aeration main pipe. A plurality of aeration branch pipes are arranged at the inner bottom ends of the anaerobic tank, the anoxic tank and the aerobic tank. The aeration branch pipes inside the anaerobic tank, the anoxic tank and the aerobic tank are respectively connected to one end of the aeration main pipe. The other end of the aeration main pipe penetrates through the sewage treatment tank and is connected to an external air source. A plurality of aeration heads are arranged on the aeration branch pipes.

[0007] Further, the sewage purification assembly includes steel frames arranged on the inner walls of the anaerobic tank, the anoxic tank and the aerobic tank, and strain fillers are arranged on the steel frames.

[0008] Further, the top end of the MBR filter tank is also connected to one end of a compressed air pipeline and a chemical dosing and cleaning pipeline. The other end of the compressed air pipeline is connected to an external compressed air system, and the other end of the chemical dosing and cleaning pipeline is connected to an external chemical dosing and cleaning system.

[0009] Further, the auxiliary cleaning assembly includes a precision filter, a backwashing electric valve, a suction electric valve, a backwashing pump and a suction pump. The water outlet of the MBR membrane module is connected to one end of the main pipeline of the auxiliary cleaning pipeline. The other end of the main pipeline of the auxiliary cleaning pipeline penetrates through the partition plate and is sequentially connected with a suction electric valve and a suction pump. The suction pump is communicated with the clear water tank through the main pipeline of the auxiliary cleaning pipeline. A branch pipeline of the auxiliary cleaning pipeline is also connected to the main pipeline of the auxiliary cleaning pipeline between the partition plate and the suction electric valve. One end of the branch pipeline of the auxiliary cleaning pipeline far away from the main pipeline of the auxiliary cleaning pipeline is sequentially connected with a backwashing electric valve, a precision filter and a backwashing pump. The backwashing pump is communicated with the clear water tank through the branch pipeline of the auxiliary cleaning pipeline.

[0010] Further, manholes are arranged at the top ends of the anaerobic tank, the anoxic tank, the aerobic tank, the MBR filter tank, the equipment room and the clear water tank.

[0011] Further, sewage outlets are arranged at the bottom ends of the anaerobic tank, the anoxic tank, the aerobic tank, the MBR filter tank, the equipment room and the clear water tank.

[0012] Further, a chemical dosing and disinfection pipeline is also connected to the top end of the clear water tank, and the chemical dosing and disinfection pipeline is connected to an external chemical dosing and disinfection system.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] The present utility model is provided with a sewage treatment tank, and in the sewage treatment tank, through two methods of biological treatment technology and membrane separation technology, sewage collection, treatment and discharge are integrated, the sewage treatment efficiency is higher, and it also has the advantages of small floor area and low operation and maintenance cost. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0016] Figure 1 It is a schematic structural diagram of the present invention.

[0017] Figure 2 It is a schematic top view structural diagram of the present invention.

[0018] Figure 3 It is a schematic internal structural diagram of the present invention.

[0019] Figure 4 It is a schematic diagram of the internal bottom structure of the present invention.

[0020] Figure 5 It is a schematic internal structural diagram of the equipment room.

[0021] Among them, 1 - sewage treatment tank, 11 - anaerobic tank, 12 - anoxic tank, 13 - aerobic tank, 131 - aerobic tank reflux pump, 14 - MBR filter tank, 141 - MBR filter tank reflux pump, 142 - MBR membrane module, 143 - air supply pipeline, 144 - chemical dosing and cleaning pipeline, 15 - equipment room, 151 - precision filter, 152 - backwashing electric valve, 153 - suction electric valve, 154 - backwashing pump, 155 - suction pump, 16 - clear water tank, 17 - main aeration pipe, 18 - strainer packing, 19 - steel frame, 20 - aeration branch pipe, 21 - aeration head. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Such as Figures 1 to 5As shown in the figure, the utility model provides an integrated domestic sewage treatment device, which includes a sewage treatment tank 1. The interior of the sewage treatment tank 1 is divided into an anaerobic tank 11, an anoxic tank 12, an aerobic tank 13, an MBR filter tank 14, an equipment room 15 and a clear water tank 16 by partitions. Water outlets are arranged on the partitions between the anaerobic tank 11, the anoxic tank 12, the aerobic tank 13 and the MBR filter tank 14. Aeration components and sewage purification components are arranged in the anaerobic tank 11, the anoxic tank 12 and the aerobic tank 13. The anaerobic tank 11 is connected with a sewage inlet pipeline. An MBR membrane module 142 is arranged in the MBR filter tank 14. An MBR filter tank reflux pump 141 is also arranged in the MBR filter tank 14. The MBR filter tank reflux pump 141 is connected with the anaerobic tank 11 through a sludge reflux pipeline. An aerobic tank reflux pump 131 is arranged in the aerobic tank 13. The aerobic tank reflux pump 131 is communicated with the anoxic tank 12 through a nitrification liquid reflux pipeline. An auxiliary cleaning component is arranged in the equipment room 15. The auxiliary cleaning component is connected with the MBR membrane module 142 through an auxiliary cleaning pipeline. The auxiliary cleaning component is also connected with the clear water tank 16 through an auxiliary cleaning pipeline. An overflow port is arranged in the clear water tank 16;

[0024] The sewage inlet pipeline leads to the bottom of the anaerobic tank 11. The water outlet on the partition between the anaerobic tank 11 and the anoxic tank 12 is arranged in the upper half of the partition, and is used for discharging the sewage in the anaerobic tank 11 into the anoxic tank 12. The water outlet on the partition between the anoxic tank 12 and the aerobic tank 13 is arranged in the lower half of the partition, and the sewage flows into the aerobic tank 13 through the water outlet. The water outlet on the partition between the aerobic tank 13 and the MBR filter tank 14 is arranged in the upper half of the partition, and the sewage flows into the MBR filter tank 14 through the water outlet. The MBR filter tank reflux pump 141 can reflux a part of the activated sludge into the anaerobic tank 11 through the sludge reflux pipeline connected to the anaerobic tank 11. The MBR membrane module 142 is connected with a suction pump 155 and a backwash pump in the equipment room 15 through an auxiliary cleaning pipeline, and is used for filtering solid particles in the water quality.

[0025] In this embodiment, the aeration component includes an aeration branch pipe 20, an aeration head 21 and an aeration main pipe 17. A plurality of aeration branch pipes 20 are arranged at the bottom ends inside the anaerobic tank 11, the anoxic tank 12 and the aerobic tank 13. The aeration branch pipes 20 inside the anaerobic tank 11, the anoxic tank 12 and the aerobic tank 13 are respectively connected with one end of the aeration main pipe 17. The other end of the aeration main pipe 17 penetrates through the sewage treatment tank 1 and is connected with an external air source. A plurality of aeration heads 21 are arranged on the aeration branch pipe 20.

[0026] In this embodiment, the sewage purification component includes a steel frame 19 arranged on the inner walls of the anaerobic tank 11, the anoxic tank 12 and the aerobic tank 13. A strain filler 18 is arranged on the steel frame 19.

[0027] In this embodiment, the top of the MBR filter tank 14 is also connected to one end of an air supply pipeline 143 and a chemical dosing and cleaning pipeline 144. The other end of the air supply pipeline 143 is connected to an external air supply system for air washing the MBR membrane module 142 to remove the particulate matter attached to the membrane surface. The other end of the chemical dosing and cleaning pipeline 144 is connected to an external chemical dosing and cleaning system. The outlet of the chemical dosing and cleaning pipeline 144 is arranged at the top of the MBR filter tank 14. The chemical agent used is citric acid or sodium hydroxide solution for cleaning the MBR membrane module 142.

[0028] In this embodiment, the auxiliary cleaning assembly includes a precision filter 151, a backwashing solenoid valve 152, a suction solenoid valve 153, a backwashing pump 154, and a suction pump 155. The water outlet of the MBR membrane module 142 is connected to one end of the main pipeline of the auxiliary cleaning pipeline. The other end of the main pipeline of the auxiliary cleaning pipeline penetrates through the partition plate and is sequentially connected with a suction solenoid valve 153 and a suction pump 155. The suction pump 155 is communicated with the clear water tank 16 through the main pipeline of the auxiliary cleaning pipeline. A branch pipeline of the auxiliary cleaning pipeline is also connected to the main pipeline of the auxiliary cleaning pipeline between the partition plate and the suction solenoid valve 153. The end of the branch pipeline of the auxiliary cleaning pipeline far from the main pipeline of the auxiliary cleaning pipeline is sequentially connected with a backwashing solenoid valve 152, a precision filter 151, and a backwashing pump 154. The backwashing pump 154 is communicated with the clear water tank 16 through the branch pipeline of the auxiliary cleaning pipeline. The outlet of the suction pump 155 is connected to the upper part of the clear water tank 16 through the main pipeline of the auxiliary cleaning pipeline, and the inlet of the backwashing pump 154 is communicated with the lower part of the clear water tank 16 through the branch pipeline of the auxiliary cleaning pipeline.

[0029] In this embodiment, manholes are provided at the tops of the anaerobic tank 11, the anoxic tank 12, the aerobic tank 13, the MBR filter tank 14, the equipment room 15, and the clear water tank 16.

[0030] In this embodiment, sewage outlets are provided at the bottoms of the anaerobic tank 11, the anoxic tank 12, the aerobic tank 13, the MBR filter tank 14, the equipment room 15, and the clear water tank 16.

[0031] In this embodiment, a chemical dosing and disinfection pipeline 161 is also connected to the top of the clear water tank 16. The chemical dosing and disinfection pipeline 161 is connected to an external chemical dosing and disinfection system.

[0032] Working principle: The sewage inlet pipeline in the anaerobic tank 11 leads to the bottom of the tank, and the sewage is purified through the cooperation of the aeration component and the sewage purification component in the anaerobic tank 11, anoxic tank 12 and aerobic tank 13 through the water outlet. The aerobic tank reflux pump 131 in the aerobic tank 13 is used to return a part of the sewage with high dissolved oxygen to the anoxic tank 12. At the same time, an MBR membrane module 142 is arranged in the MBR filter tank to clean the sewage, so that the sewage is purified multiple times. When working normally, the suction electric valve 153 and the suction pump 155 are opened, and the backwashing electric valve 152 is closed. After the sewage in the MBR filter tank 14 is filtered by the MBR membrane module 142, it is discharged to the clear water tank 16. When the MBR membrane module 142 needs to be backwashed and cleaned, the suction electric valve 153 and the suction pump 155 are closed, the backwashing electric valve 152 and the backwashing pump 154 are opened. The backwashing pump 154 filters the water in the clear water tank 16 through the precision filter 151, and then enters from the outlet of the MBR membrane module 142 at a certain pressure and flow rate to backwash the MBR membrane and clean the pollutants on the surface of the MBR membrane. The water in the clear water tank 16 is discharged through the overflow port.

[0033] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, please refer to the description in the method section.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated domestic sewage treatment device, characterized in that: The invention comprises a sewage treatment tank (1), wherein the sewage treatment tank (1) is divided into an anaerobic tank (11), an anoxic tank (12), an aerobic tank (13), an MBR filter tank (14), an equipment room (15) and a clean water tank (16) by a partition, wherein the partitions between the anaerobic tank (11), the anoxic tank (12), the aerobic tank (13) and the MBR filter tank (14) are all provided with water outlets, wherein the anaerobic tank (11), the anoxic tank (12) and the aerobic tank (13) are all provided with aeration components and sewage purification components, wherein the anaerobic tank (11) is connected to a sewage inlet pipeline, and wherein the MBR filter tank (14) is provided with an MBR membrane component (142) The MBR filter tank (14) is also provided with an MBR filter tank return pump (141), and the MBR filter tank return pump (141) is connected to the anaerobic tank (11) through a sludge return pipeline. The aerobic tank (13) is provided with an aerobic tank return pump (131), and the aerobic tank return pump (131) is connected to the anoxic tank (12) through a nitrification liquid return pipeline. The equipment room (15) is provided with an auxiliary cleaning component, and the auxiliary cleaning component is connected to the MBR membrane component (142) through an auxiliary cleaning pipeline. The auxiliary cleaning component is also connected to the clean water tank (16) through the auxiliary cleaning pipeline, and the clean water tank (16) is provided with an overflow port.

2. The integrated domestic sewage treatment device according to claim 1, characterized in that: The aeration assembly comprises an aeration branch pipe (20), an aeration head (21) and an aeration main pipe (17). A plurality of aeration branch pipes (20) are arranged at the bottom of the anaerobic tank (11), the anoxic tank (12) and the aerobic tank (13). The aeration branch pipes (20) inside the anaerobic tank (11), the anoxic tank (12) and the aerobic tank (13) are respectively connected to one end of the aeration main pipe (17). The other end of the aeration main pipe (17) passes through the sewage treatment tank (1) and is connected to an external air source. The aeration branch pipe (20) is provided with a plurality of aeration heads (21).

3. The integrated domestic sewage treatment device according to claim 1, characterized in that: The sewage purification component comprises a steel frame (19) arranged on the inner walls of an anaerobic tank (11), an anoxic tank (12) and an aerobic tank (13), and a bacterial filler (18) is arranged on the steel frame (19).

4. The integrated domestic sewage treatment device according to claim 1, characterized in that: The top of the MBR filter tank (14) is also connected to one end of a compressed air pipeline (143) and a dosing and cleaning pipeline (144); the other end of the compressed air pipeline (143) is connected to an external compressed air system; and the other end of the dosing and cleaning pipeline (144) is connected to an external dosing and cleaning system.

5. The integrated domestic sewage treatment device according to claim 1, characterized in that: The auxiliary cleaning assembly comprises a precision filter (151), a backwash electric valve (152), a suction electric valve (153), a backwash pump (154) and a suction pump (155); the water outlet of the MBR membrane assembly (142) is connected to one end of the main pipeline of the auxiliary cleaning pipeline; the other end of the main pipeline of the auxiliary cleaning pipeline passes through the partition and is sequentially connected to the suction electric valve (153) and the suction pump (155); the suction pump (155) is connected to the auxiliary cleaning pipeline by the auxiliary cleaning The main pipeline of the pipeline is connected to the clean water tank (16), and a branch pipeline of the auxiliary cleaning pipeline is connected to the main pipeline of the auxiliary cleaning pipeline between the partition and the suction electric valve (153). The end of the branch pipeline of the auxiliary cleaning pipeline away from the main pipeline of the auxiliary cleaning pipeline is connected to a backwash electric valve (152), a precision filter (151) and a backwash pump (154) in sequence. The backwash pump (154) is connected to the clean water tank (16) through the branch pipeline of the auxiliary cleaning pipeline.

6. The integrated domestic sewage treatment device according to claim 1, characterized in that: The tops of the anaerobic tank (11), the anoxic tank (12), the aerobic tank (13), the MBR filter tank (14), the equipment room (15) and the clean water tank (16) are all provided with manholes.

7. The integrated domestic sewage treatment device according to claim 1, characterized in that: The bottom ends of the anaerobic tank (11), the anoxic tank (12), the aerobic tank (13), the MBR filter tank (14), the equipment room (15) and the clean water tank (16) are all provided with sewage outlets.

8. The integrated domestic sewage treatment device according to claim 1, characterized in that: The top of the clean water tank (16) is also connected to a drug-adding disinfection pipeline (161), and the drug-adding disinfection pipeline (161) is connected to an external drug-adding disinfection system.

Images