CN114380454A

CN114380454A - TMBR sewage treatment process based on MABR and MBR

Info

Publication number: CN114380454A
Application number: CN202111344910.8A
Authority: CN
Inventors: 邱敬贤; 周萍; 曾木平; 孙慧智; 何曦; 周益辉; 王胜
Original assignee: Changsha Industrial Research Institute Environmental Protection Co Ltd
Current assignee: Changsha Industrial Research Institute Environmental Protection Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-22

Abstract

The invention discloses a TMBR sewage treatment process based on MABR and MBR, which comprises the following steps: respectively conveying the sewage to an MABR tank and an anaerobic tank according to a proportion; arranging an MABR membrane component in the MABR tank, and aerating to ensure that the biological membrane growing on the surface of the MABR membrane realizes oxygen gradient; degrading pollutants in the wastewater by using a biological membrane; treating wastewater in an MABR tank and an anaerobic tank, then flowing into an MBR tank, arranging an MBR membrane module in the MBR tank, filling MBBR filler, aerating, and treating sewage through the MBBR filler and the MBR membrane module; and (4) inputting the produced water of the MBR membrane module into a clean water tank, and refluxing the sludge and the nitrifying liquid in the MBR tank to the MABR tank. The TMBR sewage treatment process based on the MABR and the MBR has the advantages of good nitrogen and phosphorus removal effect, high efficiency, low operation energy consumption, small occupied area and convenience in operation.

Description

TMBR sewage treatment process based on MABR and MBR

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a TMBR sewage treatment process based on MABR and MBR.

Background

Although the traditional activated sludge process has higher nitrogen and phosphorus removal efficiency in domestic sewage treatment, the traditional A2O process can not meet the relevant requirements gradually along with the improvement of water quality discharge standard and the related upgrading and upgrading transformation, and has the defect of large occupied area.

The application of the MBR membrane technology brings great development to the field of sewage treatment, has the advantages of stable effluent quality, small occupied area, no need of a secondary sedimentation tank, simple and convenient operation and the like, brings great environmental and economic benefits to human beings, and particularly has wide application prospect along with gradual maturity of the membrane technology and upgrading and transformation of treatment plants in recent years. But has the defects of high aeration energy consumption, easy pollution of the membrane and the like.

The MABR technology is a bubble-free aeration technology, degrades pollutants by utilizing a biological membrane on the surface of an aeration membrane, has high oxygen utilization rate, saves energy consumption, can realize synchronous nitrification and denitrification, has good denitrification effect and poor total phosphorus treatment effect.

Therefore, it is necessary to develop a sewage treatment process with good treatment effect, small floor area and simple operation by combining the MABR process and the MBR process.

Disclosure of Invention

In view of the above, the present invention aims to overcome the defects of high operation energy consumption, poor nitrogen and phosphorus removal efficiency and large occupied area in the conventional sewage treatment device, and provides a TMBR sewage treatment process based on MABR and MBR, such that the TMBR sewage treatment process has advantages of good nitrogen and phosphorus removal effect, high efficiency, low operation energy consumption, small occupied area and convenient operation.

The invention solves the problems through the following technical means: a TMBR sewage treatment process based on MABR and MBR comprises the following steps:

s1: after intercepting suspended matters, the sewage is respectively conveyed to an MABR tank and an anaerobic tank according to a proportion, wherein the water inlet proportion of the MABR tank is 50-70%; arranging an MABR membrane component in the MABR tank, and aerating to ensure that the biological membrane growing on the surface of the MABR membrane realizes oxygen gradient; degrading pollutants in the wastewater by using a biological membrane;

s2: the wastewater flows into an anaerobic tank after being treated by an MABR tank, then flows into an MBR tank after being treated by the anaerobic tank, is provided with an MBR membrane component, is filled with MBBR filler, is aerated, and is purified by the MBBR filler and the MBR membrane component;

s3: and (3) inputting the produced water of the MBR membrane module into a clean water tank, and refluxing the sludge and the nitrifying liquid in the MBR tank to the MABR tank so as to synchronously carry out nitrification and denitrification reactions in the MABR tank.

Further, sewage flows to the MABR pool and the anaerobic pool through a water inlet assembly after being intercepted by a grid at the top of the regulating pool, the water inlet assembly comprises a lifting pump arranged in the regulating pool, a water inlet pipe communicated with the water outlet end of the lifting pump and a water inlet main valve arranged on the water inlet pipe, the water inlet pipe is communicated with the MABR pool and the anaerobic pool through an MABR pool water inlet branch pipe and an anaerobic pool water inlet branch pipe respectively, and an MABR pool water inlet valve and an anaerobic pool water inlet valve are arranged on the MABR pool water inlet branch pipe and the anaerobic pool water inlet branch pipe respectively.

Further, a first interception net is arranged at a water inlet of the MBR tank.

Further, mud in the MBR pond and nitrify the liquid and pass through mixed liquid back flow intercommunication, the feed liquor end of mixed liquid back flow is located MBR bottom of the pool, and the play liquid end is located MABR top of the pool, and the feed liquor end of mixed liquid back flow is provided with the second interception net, is provided with the reflux valve on the mixed liquid back flow.

Further, the MABR tank and the MBR tank are respectively aerated through a first aeration branch pipe and a second aeration branch pipe, and an aeration device is arranged at the air outlet end of the second aeration branch pipe.

Furthermore, the mixed liquid return pipe provides power through an air stripping pipe, the air stripping pipe is communicated with the third aeration branch pipe, and an external air source is communicated with the first aeration branch pipe, the second aeration branch pipe and the third aeration branch pipe through an air bag.

Further, the water production end of the MBR membrane module is communicated with a clean water tank through a water production pipe, and a self-priming pump and a water production valve are arranged on the water production pipe.

Furthermore, one side of the water production pipe is provided with a backwashing pipe in parallel, the backwashing pipe is provided with a backwashing valve and a backwashing pump, and the water production pipe further comprises an alkali dosing device and an acid dosing device which are communicated with the backwashing pipe, and the alkali dosing device and the acid dosing device are respectively matched with an alkali dosing pump and an acid dosing pump.

Furthermore, an ultraviolet sterilizer is arranged at the water outlet end of the clean water tank.

Further, the fan, the air bag, the self-sucking pump, the backwashing pump, the alkali dosing device, the alkali dosing pump, the acid dosing device and the acid dosing pump are arranged in a centralized mode in the equipment room.

The invention has the beneficial effects that: the TMBR sewage treatment process based on the MABR and the MBR integrates the inverted A2O tank, the MABR tank, the MBBR filler and the MBR tank, and has the advantages of good treatment effect, good nitrogen and phosphorus removal and small occupied area. The inverted A2O process, the MABR process, the MBBR process and the MBR process are combined to improve the nitrogen and phosphorus removal effect, firstly, the inverted A2O process is adopted to prepose denitrification, preferentially obtain a carbon source, improve the nitrogen removal effect, improve the phosphorus removal efficiency by using the hunger effect and the colony effect, simultaneously, the MABR process is adopted in an anoxic section to carry out bubble-free aeration, the energy consumption is saved, meanwhile, synchronous nitrification and denitrification are realized, the nitrogen removal effect is further improved, and in addition, the denitrification and phosphorus removal can be realized under the reflux action of a nitrified liquid; good oxygen pond and MBR pond unite two into one, and area is little to the MBBR filler is thrown to the membrane cisterna, improves the treatment effect, and MBBR filler free motion under the aeration condition plays certain effect of scrubbing to MBR membrane surface adnexed pollutant, reduces MBR membrane pollution and backwash frequency, and then reduces the backwash energy consumption. The sludge and the nitrifying liquid are refluxed by gas stripping, so that the energy consumption is saved.

Drawings

The invention is further described below with reference to the figures and examples.

FIG. 1 is a process flow diagram of a TMBR sewage treatment process based on MABR and MBR.

Reference numerals: 1. a grid; 2. a regulating tank; 3. a lift pump; 4. a main water inlet valve; 5. an MABR sump inlet valve; 6. a water inlet valve of the anaerobic tank; 7. a reflux valve; 8. a first interception net; 9. an MBR tank; 10. MBBR filler; 11. an MABR pool; 12. an MABR membrane module; 13. an anaerobic tank; 14. an aeration device; 15. an MBR membrane module; 16. a sludge discharge pipe; 17. a second interception net; 18. a clean water tank; 19. a gas stripping tube; 20. a mixed liquid return pipe; 21. a self-priming pump; 22. a backwash valve; 23. a backwash pump; 24. a water production valve; 25. an alkali dosing pump; 26. an alkali dosing device; 27. an acid dosing pump; 28. an acid dosing device; 29. an ultraviolet sterilizer; 30. a gas source; 31. air bags; 32. a first aeration branch pipe; 33. a second aeration branch pipe; 34. and a third aeration branch pipe.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments.

As shown in fig. 1, the present embodiment provides an MABR and MBR based TMBR sewage treatment system, which includes an adjusting tank 2, a reactor and a gas source assembly, wherein a grid 1 is disposed at the top of the adjusting tank, the reactor includes an MABR tank 11, an anaerobic tank 13, an MBR tank 9 and a clean water tank 18, which are sequentially communicated, an MABR membrane assembly 12 and an MBR membrane assembly 15 are respectively disposed in the MABR tank and the MBR tank, and an MBR filler 10 is added in the MBR tank; the adjusting tank is communicated with the reactor through a water inlet assembly, the bottom of the MBR tank is provided with an aeration device 14, the air source assembly comprises an air source 30 and an air bag 31, and the air bag is communicated with the MABR membrane assembly and the aeration device through a first aeration branch pipe 32 and a second aeration branch pipe 33 respectively.

The grid 1 is used to intercept suspended matter, reduce subsequent impact load and prevent pipe blockage. The MABR tank and the anaerobic tank are separated through the baffle, the bottoms of the MABR tank and the anaerobic tank are communicated, wastewater enters the anaerobic tank from the MABR tank, and the MABR membrane component is flushed to a certain extent by utilizing the water inflow velocity, so that the blocking of the MABR membrane component is prevented. The MABR membrane component comprises an MABR membrane, a membrane frame, an air inlet pipe and the like. The MABR membrane material is a hydrophobic breathable membrane, and can only pass gas, but cannot pass water, and the gas is aerated from the inside of the MABR membrane to the outside of the MABR membrane. The MABR membrane is wound on the hollow cylinder of the membrane frame in a rotating manner. The MABR membranes are separated by convex point structural plates, so that sewage can pass through the MABR membranes conveniently and the biological membranes can grow conveniently; the MABR membrane is internally provided with a rhombic pore plate net structure, so that the MABR membrane is supported, and gas circulation is facilitated. And the air inlet pipe of the MABR membrane is communicated with the first aeration branch pipe.

The MABR tank replaces a traditional anoxic tank and is arranged in front, so that a denitrification system preferentially obtains a carbon source, the denitrification treatment efficiency is improved, and meanwhile, a bubble-free aeration technology is adopted in the MABR tank, so that a biological membrane growing on the surface of the MABR aeration membrane can realize oxygen gradient, and thus synchronous nitrification and denitrification are realized, and pollutants are removed.

The effluent of the anaerobic tank enters the MBR tank through self-flowing, an MBR membrane module is arranged in the MBR tank, MBBR filler is added for increasing biomass and improving pollutant removal effect, and meanwhile, the MBBR filler has certain collision scrubbing effect on the MBR membrane module in the aeration flow pushing and moving process, so that the backwashing frequency of the MBR membrane module is reduced.

The filling rate of the filler is 20% -50%, the size of the filler is 10-30 mm, the size of the filler is larger than the size of the small holes of the intercepting net, blockage is prevented, the filler is made of polyurethane, PE and the like, and the preferred filler is made of PE.

The aeration device adopts one of perforated pipe aeration, cyclone aerator and nozzle aeration, the aeration device is used for aerating the MBR tank, air scrubbing is carried out on the MBR membrane component, and meanwhile, the MBR aeration residual gas is used for providing required oxygen for the biological membrane grown by the MBBR filler, so that the gas utilization rate is improved, and the aeration energy consumption is reduced. The air source is one of an air pump, a vortex fan, a rotary fan, a centrifugal fan and a magnetic suspension fan.

The MBR membrane module comprises an MBR membrane, a membrane frame, a water production pipe and the like. The MBR membrane is one of a mesoporous fiber membrane and a flat membrane, and is preferably a mesoporous fiber membrane.

The water inlet assembly comprises a lifting pump 3 arranged in the regulating reservoir, a water inlet pipe communicated with the water outlet end of the lifting pump and a water inlet main valve 4 arranged on the water inlet pipe, the water inlet pipe is communicated with the MABR reservoir and the anaerobic reservoir through an MABR reservoir water inlet branch pipe and an anaerobic reservoir water inlet branch pipe respectively, and an MABR reservoir water inlet valve 5 and an anaerobic reservoir water inlet valve 6 are arranged on the MABR reservoir water inlet branch pipe and the anaerobic reservoir water inlet branch pipe respectively. The water inlet proportion of the MABR tank is 50-70%, the water inlet proportion of the anaerobic tank is 50-30%, and the water inflow is cooperatively regulated through a water inlet valve of the MABR tank and a water inlet valve of the anaerobic tank.

And a first interception net 8 is arranged at the water inlet of the MBR tank. Prevent the membrane pool filler from escaping into the anaerobic pool. The interception net is of a rectangular or round structure, small holes are formed in the interception net, and the size of each small hole is 5-20mm smaller than that of the filler.

The MBR pond communicates through mixed liquid back flow 20 between the MABR pond, the inlet end of mixed liquid back flow is located MBR bottom of the pool, and the play liquid end is located MABR top of the pool, and the inlet end of mixed liquid back flow is provided with and is provided with back flow valve 7 on the mixed liquid back flow of second interception net 17, the air pocket is through third aeration branch pipe 34 and gas lift pipe 19 and mixed liquid back flow intercommunication, realizes the air lift backward flow.

Mud backward flow unites two into one with the liquid backward flow of nitrifying, and the air stripping backward flow is adopted in the mixed flow, practices thrift the energy consumption, and mixed liquid back flow one end of intaking is located MBR bottom of the pool, and the outside sets up the second interception net and separates, prevents that MBBR from filling material backward flow to MABR pond, and mixed liquid back flow play water one end sets up at MABR top of the pool, can play with certain impact stirring effect to the MABR pond. The second interception net and the first interception net are of the same structure and are of rectangular, circular and the like, and small holes are formed in the interception nets, and the size of each small hole is 5-20mm smaller than that of the filler. The mixed liquid return pipe is provided with a return valve for adjusting the return amount, and the return ratio is 0-400%. Meanwhile, when the second interception net at the water inlet of the mixed liquid return pipe is blocked by the filler carelessly, the return valve is closed, and the gas in the gas stripping pipe can be used for cleaning the interception net, so that the blocked filler falls off.

The water production end of the MBR membrane module is communicated with a clean water tank through a water production pipe, and a self-priming pump 21 and a water production valve 24 are arranged on the water production pipe.

The device comprises a water production pipe, a backwashing pipe, an alkali dosing device 26 and an acid dosing device 28, wherein the backwashing pipe is arranged on one side of the water production pipe in parallel, the backwashing pipe is provided with a backwashing valve 22 and a backwashing pump 23, the alkali dosing device and the acid dosing device are communicated with the backwashing pipe, and the alkali dosing device and the acid dosing device are respectively matched with an alkali dosing pump 25 and an acid dosing pump 27.

The self-priming pump is matched with the water production valve for use, and the backwashing pump is matched with the backwashing valve for use. When water is produced, the self-sucking pump and the water producing valve are opened, the backwashing pump and the backwashing valve are closed, and clean water flows into the clean water tank through the water producing pipe; during backwashing, a backwashing pump and a backwashing valve are opened, a self-priming pump and a water production valve are closed, and backwashing water is used for backwashing the MBR membrane component; water production and backwashing are carried out intermittently.

And backwashing of the MBR membrane comprises water washing and chemical cleaning, wherein acid or alkali is required to be added during the chemical cleaning. The acid is citric acid, and the alkali is sodium hypochlorite or a mixed solution of sodium hypochlorite and sodium hydroxide. The acid-base adding position is arranged in front of the backwashing pump, and the acid-base adding dosage is controlled by an acid adding pump and an alkali adding pump respectively.

The gas source is connected with each aeration branch pipe through a gas bag, and the gas bag plays roles in regulating gas flow, stabilizing pressure and the like for aeration. Manual valves are arranged on the aeration branch pipes for controlling and adjusting aeration quantity.

The material of the reactor shell is one of carbon steel, weathering resistant steel, stainless steel, glass fiber reinforced plastic, PE, PP and the like, and carbon steel is preferred.

The water outlet end of the clean water tank is provided with an ultraviolet sterilizer 29. And the effluent of the clean water tank is disinfected by an ultraviolet disinfector and then discharged after reaching the standard. The uv disinfector is preferably an over-flow uv disinfector.

The fan, the air bag, the self-priming pump, the backwashing pump, the alkali dosing device, the alkali dosing pump, the acid dosing device and the acid dosing pump are arranged in a centralized mode through the equipment room.

During specific work, wastewater firstly intercepts floaters through the grating 1 and then enters the regulating tank 2, then enters the reactor main body through the lift pump 3 along the water inlet pipe and the water inlet main valve 4, and then enters the MABR tank 11 and the anaerobic tank 13 through the MABR tank water inlet valve 5 and the anaerobic tank water inlet valve 6 respectively, wherein the water inlet ratio is that the MABR tank 11: the anaerobic tank 13 is 7: 3; the MABR tank 11 and the anaerobic tank 13 are separated by a baffle plate, the bottoms of the MABR tank 11 and the anaerobic tank 13 are communicated, wastewater enters the anaerobic tank 13 from the MABR tank 11, and the MABR membrane module is washed to a certain extent by using the inflow flow rate, so that the blocking of the MABR membrane module is prevented. The MABR tank 11 is provided with at least one group of MABR membrane assemblies 12, including MABR membranes, membrane frames, air inlet pipes and the like. The MABR membrane material is hydrophobic ventilated membrane, can only pass through gas, and water can't pass through, and MABR membrane module 12 is rotatory winding form submergence in the cell body, places on the frame, and the gaseous aeration outside membrane from the MABR inboard that provides through air supply 30 and first aeration branch pipe 32 makes the biomembrane of growing on MABR aeration membrane surface realize oxygen gradient through the aeration of no bubble to realize getting rid of in step and nitrify denitrification, improve denitrogenation efficiency. Salient point structural plates are arranged between the MABR membranes for separation, so that sewage can pass through the MABR membranes conveniently and the biological membranes can grow conveniently; the MABR membrane is internally provided with a rhombic pore plate net structure, so that the MABR membrane is supported, and gas circulation is facilitated.

The effluent of the anaerobic tank 13 enters the MBR tank 9 through a first interception net 8 which has the function of intercepting the MBBR filler 10 and is prevented from escaping. An MBR membrane module 15 is arranged in the MBR tank 9, MBBR filler 10 is added for increasing biomass and improving pollutant removal effect, and meanwhile, the MBBR filler 10 has certain collision scrubbing effect on the MBR membrane module in the aeration flow impact and moving process, so that the backwashing frequency of the MBR membrane module is reduced, and the energy consumption is saved. The water fed into the MABR tank 11 is mixed with the mixed liquid returned by the mixed liquid return pipe 20 arranged in the MBR tank 9 for denitrification. The mixed liquid is refluxed by gas stripping, and the power required by the reflux is provided by the gas source 30 and the second aeration branch pipe 33, so that the energy consumption is saved. The mixed liquid reflux ratio was 200%, and the reflux ratio was controlled by a reflux valve 7 provided in the mixed liquid reflux pipe 20. The MBBR in the MBR tank 9 packs 10 the filling rate 30%, packs the size and is 20mm, packs the aperture size that the size is greater than first interception net and 8 second interception nets 17, prevents to block up, packs to be the PE material. Small holes are uniformly distributed on the surfaces of the two interception nets, the aperture of each small hole is smaller than the size of the filler so as to prevent the filler from blocking the interception nets, meanwhile, when the second interception net 20 is inadvertently blocked by the filler, the reflux valve 7 is closed, and the second interception net 20 can be cleaned by gas communicated with the third aeration branch pipe 34 connected with the gas source 30 so as to enable the blocked filler to fall off. And an MBR membrane module 15 in the MBR tank 9 is divided into water production and backwashing, and alternately and intermittently operates. When water is produced, the self-sucking pump 21 and the water producing valve 24 are opened, the backwashing pump 23 and the backwashing valve 22 are closed, and the produced water enters the clean water tank 18 through the water producing pipe; during backwashing, the backwashing pump 23 and the backwashing valve 22 are opened, the self-priming pump 21 and the water production valve 24 are closed, and water enters the MBR membrane module from the clean water tank 18 for backwashing. Self priming pump 21 and the supporting use of producing water valve 24, backwash pump 23 and the supporting use of backwash valve 22, the two is not the operation simultaneously, when chemical backwash, carries out the medicament through throwing citric acid or sodium hypochlorite and strengthens the backwash. The effluent of the clean water tank 18 is disinfected by an ultraviolet disinfector 29 and then discharged after reaching the standard. In addition, a chemical phosphorus removal dosing device is configured according to requirements, and the dosing pump automatically adds the medicine and removes the phosphorus at the middle position of the MBR membrane 9, so that the phosphorus is ensured to reach the standard and be discharged according to the discharge. The sludge is periodically discharged from the sludge discharge pipe 16.

The embodiment also provides a TMBR sewage treatment process based on the MABR and the MBR, which comprises the following steps:

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A TMBR sewage treatment process based on MABR and MBR is characterized by comprising the following steps:

2. The MABR and MBR based TMBR sewage treatment process of claim 1, wherein: after the suspended solid is intercepted to the grid at the top of the regulating reservoir, sewage flows to the MABR pool and the anaerobic pool through the water inlet assembly, the water inlet assembly comprises a lifting pump arranged in the regulating reservoir, a water inlet pipe communicated with the water outlet end of the lifting pump and a water inlet main valve arranged on the water inlet pipe, the water inlet pipe is communicated with the MABR pool and the anaerobic pool through an MABR pool water inlet branch pipe and an anaerobic pool water inlet branch pipe respectively, and an MABR pool water inlet valve and an anaerobic pool water inlet valve are arranged on the MABR pool water inlet branch pipe and the anaerobic pool water inlet branch pipe respectively.

3. The MABR and MBR based TMBR sewage treatment process of claim 2, wherein: and a first interception net is arranged at the water inlet of the MBR tank.

4. The MABR and MBR based TMBR sewage treatment process of claim 3, wherein: mud in the MBR pond and nitrify the liquid and pass through mixed liquid back flow intercommunication, the inlet end of mixed liquid back flow is located MBR bottom of the pool, and the play liquid end is located MABR top of the pool, and the inlet end of mixed liquid back flow is provided with the second interception net, is provided with the reflux valve on the mixed liquid back flow.

5. The MABR and MBR based TMBR sewage treatment process of claim 4, wherein: the MABR tank and the MBR tank are aerated through a first aeration branch pipe and a second aeration branch pipe respectively, and an aeration device is arranged at the air outlet end of the second aeration branch pipe.

6. The MABR and MBR based TMBR sewage treatment process of claim 5, wherein: the mixed liquid return pipe provides power through an air stripping pipe, the air stripping pipe is communicated with the third aeration branch pipe, and an external air source is communicated with the first aeration branch pipe, the second aeration branch pipe and the third aeration branch pipe through an air bag.

7. The MABR and MBR based TMBR sewage treatment process of claim 6, wherein: the water production end of the MBR membrane module is communicated with a clean water tank through a water production pipe, and a self-priming pump and a water production valve are arranged on the water production pipe.

8. The MABR and MBR based TMBR sewage treatment process of claim 7, wherein: the device comprises a water production pipe, a backwashing valve, a backwashing pump, an alkali dosing device and an acid dosing device, wherein the backwashing pipe is arranged on one side of the water production pipe in parallel, the alkali dosing device and the acid dosing device are communicated with the backwashing pipe, and the alkali dosing pump and the acid dosing pump are respectively matched with the alkali dosing device and the acid dosing device.

9. The MABR and MBR based TMBR sewage treatment process of claim 8, wherein: and an ultraviolet sterilizer is arranged at the water outlet end of the clean water tank.

10. The MABR and MBR based TMBR sewage treatment process of claim 9, wherein: the fan, the air bag, the self-priming pump, the backwashing pump, the alkali dosing device, the alkali dosing pump, the acid dosing device and the acid dosing pump are arranged in a centralized mode through the equipment room.