CN216106529U

CN216106529U - Integration MBR domestic sewage treatment equipment

Info

Publication number: CN216106529U
Application number: CN202122844874.3U
Authority: CN
Inventors: 史永良; 史鹏程
Original assignee: Yixing Yongda Environmental Protection Equipment Co ltd
Current assignee: Yixing Yongda Environmental Protection Equipment Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-03-22
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses integrated MBR (membrane bioreactor) domestic sewage treatment equipment, which comprises a grid well, an adjusting tank, integrated treatment equipment, an ultraviolet sterilizer and a sludge tank, wherein a rotary fine grid is arranged on one side of the grid well, a primary lifting pump is arranged on the other side of the grid well, two groups of submersible water impellers and a secondary lifting pump are arranged in the adjusting tank, and the secondary lifting pump is connected with an integrated water inlet pipe through a lifting pump water outlet pipe; the backwashing pump and the self-priming pump on the left side of the integrated treatment equipment are respectively connected with the backwashing tank and the water outlet pipe of the first membrane pool, the self-priming pump is also connected with the three groups of membrane bioreactors of the integrated treatment equipment through the water outlet pipe of the second membrane pool, and the backwashing pump and the self-priming pump are connected through a backwashing water inlet pipe communicated with the water outlet pipe of the second membrane pool; the utility model has the advantages of good quality of treated water, stable water outlet and capability of trapping bacteria and escherichia coli in water. Can operate under the conditions of high volume load, low sludge load and long sludge age, generates less residual sludge and reduces the cost of sludge treatment facilities.

Description

Integration MBR domestic sewage treatment equipment

Technical Field

The utility model relates to the technical field of sewage treatment equipment, in particular to integrated MBR (membrane bioreactor) domestic sewage treatment equipment.

Background

The sewage treatment station enables the sewage to be treated to reach the standard and then to be recycled as reclaimed water. The water quality after the treatment of the sewage treatment device in the existing sewage treatment station does not reach the standard, especially the interception effect on bacteria and escherichia coli is not good, the effluent is unstable, the removal rate of organic matters is not good, the amount of produced residual sludge is more, and secondary pollution is caused to the environment. For this reason, we propose an integrated MBR domestic sewage treatment plant.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an integrated MBR domestic sewage treatment device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the integrated MBR domestic sewage treatment equipment comprises a grating well, an adjusting tank, integrated treatment equipment, an ultraviolet sterilizer and a sludge tank, wherein the grating well is connected to the left side of the adjusting tank, a rotary fine grating is arranged on one side of the grating well, a primary lifting pump is arranged on the other side of the grating well, two groups of submersible water impellers and two groups of secondary lifting pumps are arranged in the adjusting tank, and the secondary lifting pumps are connected to an integrated water inlet pipe through lifting pump water outlet pipes;

a water inlet connected with an integrated water inlet pipe is formed in a grid on the left side of the integrated treatment equipment, electromagnetic valves are arranged at the tops of a sodium hypochlorite dosing barrel and a backwashing tank of the integrated treatment equipment and are connected to a water outlet pipe of a first membrane pool through connecting pipes, a backwashing pump and a self-priming pump on the left side of the integrated treatment equipment are respectively connected with the backwashing tank and the water outlet pipe of the first membrane pool, the self-priming pump is further connected to three groups of membrane bioreactors of the integrated treatment equipment through a water outlet pipe of a second membrane pool, and the backwashing pump and the self-priming pump are connected through a backwashing water inlet pipe communicated with the water outlet pipe of the second membrane pool;

the integrated treatment equipment is internally provided with a sludge reflux pump, two sets of roots blowers in the integrated treatment equipment are connected with two sets of aeration main pipes in the integrated treatment equipment through air inlet pipes, a plurality of sets of aeration branch pipes are arranged on the aeration main pipes, and the air inlet pipes are also connected with three sets of membrane bioreactors through air pipes;

ultraviolet ray disinfection ware sets up in sludge impoundment left side, the intake pipe still connects in sludge impoundment bottom, first membrane pond water piping connection is in ultraviolet ray disinfection ware, ultraviolet ray disinfection ware passes through the pasteurization metering tank of disinfection pipe connection in sludge impoundment, integration treatment facility bottom is through row mud union coupling in sludge impoundment.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has the advantages of good treated water quality, stable effluent, SS less than 3mg/L and capability of intercepting bacteria and escherichia coli in water. The sludge age is long, so that the removal rate of the refractory organic matters can be greatly improved. Can operate under the conditions of high volume load, low sludge load and long sludge age, and generates less residual sludge, thereby reducing the cost of sludge treatment facilities. The equipment is highly integrated, the occupied area is small, the automation degree is high, and the maintenance and the management are easy.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic top view of the grid well and conditioning tank of the present invention;

FIG. 4 is a schematic top view of the integrated processing apparatus of the present invention;

FIG. 5 is a schematic view showing the top view of the connection between the sludge pond and the ultraviolet sterilizer of the present invention;

FIG. 6 is a schematic process flow diagram of the present invention.

In the figure: 1. a rotary fine grid; 2. a gate; 3. a primary lift pump; 4. a submersible water impeller; 5. a secondary lift pump; 6. a first check valve; 7. a butterfly valve; 8. a dosing pump; 9. a backwash pump; 10. a self-priming pump; 11. a second check valve; 12. a manual valve; 13. a third check valve; 14. an electrically operated valve; 15. a Roots blower; 16. a sludge reflux pump; 17. an ultraviolet sterilizer; 18. a pasteurisation tank; 19. an electromagnetic valve; 20. a grid well; 21. a regulating tank; 22. lifting a water outlet pipe of the pump; 23. an integrated water inlet pipe; 24. a water inlet; 25. a sodium hypochlorite dosing barrel; 26. backwashing the tank; 27. a grid; 28. an air inlet pipe; 29. a membrane bioreactor; 30. a water outlet pipe of the second membrane tank; 31. a water outlet pipe of the first membrane tank; 32. a sludge discharge pipe; 33. an aeration main pipe; 34. an aeration branch pipe; 35. a sludge tank; 36. an integrated processing device; 37. a connecting pipe; 38. a plant sewage conduit; 39. a mud outlet pipe of a dewatering machine room.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the integrated MBR domestic sewage treatment equipment comprises a grating well 20, an adjusting tank 21, integrated treatment equipment 36, an ultraviolet sterilizer 17 and a sludge tank 35, wherein the grating well 20 is connected to the left side of the adjusting tank 21, a rotary fine grating 1 is arranged on one side of the grating well 20, a primary lifting pump 3 is arranged on the other side of the grating well, two groups of submersible water impellers 4 and a secondary lifting pump 5 are arranged in the adjusting tank 21, and the secondary lifting pump 5 is connected to an integrated water inlet pipe 23 through a lifting pump water outlet pipe 22;

a water inlet 24 connected with an integrated water inlet pipe 23 is formed in a grid 27 on the left side of the integrated treatment equipment 36, electromagnetic valves 19 are arranged at the tops of a sodium hypochlorite dosing barrel 25 and a backwashing tank 26 of the integrated treatment equipment 36, the electromagnetic valves 19 are connected to a water outlet pipe 31 of a first membrane pool through connecting pipes 37, a backwashing pump 9 and a self-priming pump 10 on the left side of the integrated treatment equipment 36 are respectively connected with the backwashing tank 26 and the water outlet pipe 31 of the first membrane pool, the self-priming pump 10 is further connected to three groups of membrane bioreactors 29 of the integrated treatment equipment 36 through a water outlet pipe 30 of a second membrane pool, and the backwashing pump 9 and the self-priming pump 10 are connected through a backwashing water inlet pipe communicated with the water outlet pipe 30 of the second membrane pool;

the integrated treatment equipment 36 is also internally provided with a sludge reflux pump 16, the two sets of roots blowers 15 in the integrated treatment equipment 36 are connected with two sets of aeration main pipes 33 in the integrated treatment equipment 36 through air inlet pipes 28, the aeration main pipes 33 are also provided with a plurality of sets of aeration branch pipes 34, and the air inlet pipes 28 are also connected with three sets of membrane bioreactors 29 through air pipes;

ultraviolet disinfector 17 sets up in sludge impoundment 35 left side, intake pipe 28 still connects in sludge impoundment 35 bottom, first membrane cisterna outlet pipe 31 connects in ultraviolet disinfector 17, ultraviolet disinfector 17 passes through the disinfection pipe connection in the pasteurization metering tank 18 in sludge impoundment 35, integration treatment facility 36 bottom is connected in sludge impoundment 35 through mud pipe 32.

The one-level lift pump 3 is provided with two sets, and the water outlet of the one-level lift pump 3 is connected to the adjusting tank 21 through a pipeline.

And a gate 2 which enables two sides of the grid well 20 to be communicated is arranged at the middle partition of the grid well.

The first check valve 6 and the butterfly valve 7 are sequentially installed on the lift pump water outlet pipe 22.

The backwashing water inlet pipe is sequentially provided with a second check valve 11 and a manual valve 12, the sodium hypochlorite dosing barrel 25 is connected with the backwashing water inlet pipe through a backwashing medicine pipe, the backwashing medicine pipe is provided with a dosing pump 8, and the second membrane pool water outlet pipe 30 is sequentially provided with a third check valve 13 and an electric valve 14.

The bottom of the sludge pool 35 is connected with a factory sewage pipeline 38 and a sludge outlet pipe 39 of a dewatering machine room.

Sewage is collected to a sewage treatment station through a sewage pipe network and flows through a mechanical grid (namely a rotary fine grid 1) to automatically intercept large-particle suspended matters and impurities; then flows into the regulating tank 21, the water quality and the water quantity are regulated in the regulating tank 21, and the sewage is lifted to the oxygen deficiency by the secondary lifting pump 5.

Mixing the sewage with the reflux and the mixed solution in the anoxic tank, and performing denitrification treatment; then the sewage enters an aerobic tank and is subjected to nitration treatment; and finally, entering an MBR reaction tank. A curtain type membrane is arranged in the MBR reaction tank, and microorganisms in the reaction tank degrade biochemical pollutants in sewage. The membrane unit part is mainly used for solid-liquid separation, microbial solids can be effectively intercepted in the reactor, the stability of the effluent quality is ensured, and the sludge concentration in the reactor is effectively improved. And a part of sludge in the MBR tank is discharged into the sludge digestion tank, and a part of sludge flows back into the anoxic tank to provide nitrate for an anoxic section, so that the aim of denitrification is fulfilled.

And (3) discharging water from the MBR reaction tank, disinfecting the water in an ultraviolet disinfector 17, killing toxic bacteria and removing chromaticity, directly feeding the water into a clean water tank, and staying or directly pumping the water into a reclaimed water pipe network for recycling after all water quality indexes reach the standard.

The sludge is collected in a sludge pond and is mechanically dug and transported outside after being digested. The supernatant returns to the adjusting tank 21.

Specifically, in use, the rotary fine grid 1: the device is used for intercepting granular and fibrous substances in sewage, and the intercepted suspended substances are periodically removed by manual work.

A water collecting well: the sewage collecting device is used for collecting all sewage, and when the sewage pipeline is deeply buried and directly collects the regulating reservoir 21, the regulating reservoir 21 is large in volume, high in construction inspection degree, low in pool utilization rate and large in investment, so that unreasonable problems can be solved by utilizing the water collecting well and lifting the sewage into the regulating reservoir 21 by the water pump.

The adjusting tank 21: because the water quantity is regulated and the water quality is uniform, the sewage can uniformly enter the subsequent treatment unit. Meanwhile, the impact resistance of the whole system is improved, the design scale of the subsequent treatment unit is reduced, and the sewage is pumped into the subsequent treatment unit by the sewage pump.

An anaerobic hydrolysis tank: the anaerobic hydrolysis tank utilizes the metabolism of anaerobic biological bacteria to degrade high molecular substances into small molecular substances and simultaneously convert a part of organic substances into inorganic salts and a small amount of new cell substances, thereby further improving the biodegradability of sewage and reducing the power consumption of oxygen biochemistry, and treated effluent automatically flows into the contact oxidation tank.

A contact oxidation pond: aerobic organisms metabolize various organic matters in the sewage by taking the filler as a carrier under aerobic conditions to convert the organic matters into inorganic salts, thereby achieving the purpose of purification. The aerobic biological bacteria must have enough oxygen, namely enough dissolved oxygen in the wastewater, so as to achieve the purpose of biochemical treatment.

Filling: the wood technology adopts novel three-dimensional elastic filler and layer-dense efficient biochemical filler, and the filler has the advantages of large specific surface area, long service life, easiness in film formation, corrosion resistance and the like. Meanwhile, the filler has certain rigidity, can cut bubbles in the wastewater in a multi-level manner, increases the dissolved oxygen efficiency, and is not easy to agglomerate with the filler, so that the blockage of an oxidation pond can not be avoided.

An aerator: the process adopts the aeration pipe, has higher dissolved oxygen transfer rate than other aerators, has the biggest characteristics of no aging, light weight, long service life, corrosion resistance, difficult blockage and the like.

Membrane bioreactor 29 (MBR): MBR is a new high-efficiency sewage treatment process combining high-efficiency membrane separation technology and traditional activated sludge process, and is characterized by that it uses an immersed membrane component with unique structure and places it in an aeration tank, and the water after aerobic aeration and biological treatment is filtered by means of filter membrane and pumped out. It is different from traditional sewage treating method, and replaces the secondary sedimentation tank and the tertiary treatment process in the traditional biochemical process. The membrane greatly improves the solid-liquid separation capability of the system, so that the effluent quality and the volume load of the system are greatly improved, the effluent can reach the miscellaneous water standard, and can reach the landscape water standard after subsequent treatment. Due to the filtering action of the membrane, microorganisms are completely trapped in the bioreactor, so that the complete separation of the hydraulic retention time and the sludge age of the activated sludge is realized, and the sludge bulking problem in the traditional activated sludge method is eliminated. The membrane bioreactor has the advantages of high pollutant removal efficiency, strong nitrification capacity, capability of simultaneously performing nitrification and denitrification, good denitrification effect, stable effluent quality, low residual sludge yield, compact equipment, simple operation and the like. The method is widely applied to treatment and recycling of domestic sewage and various biochemical industrial wastewater at present.

A sludge tank 35: the sludge tank 35 stores the sludge precipitated in the sedimentation tank and the backwashing water in the sand filter tank, and a supernatant liquid return pipe is arranged on the sludge tank and flows into the contact oxidation tank for retreatment; and meanwhile, a submersible water impeller is arranged in the sludge tank to prevent sludge in the sludge tank from precipitating and caking.

In conclusion, the integrated MBR domestic sewage treatment equipment has the advantages of excellent water quality, stable effluent, SS (suspended solid) less than 3mg/L and capability of intercepting bacteria and escherichia coli in water. The sludge age is long, so that the removal rate of the refractory organic matters can be greatly improved. Can operate under the conditions of high volume load, low sludge load and long sludge age, and generates less residual sludge, thereby reducing the cost of sludge treatment facilities. The equipment is highly integrated, the occupied area is small, the automation degree is high, and the maintenance and the management are easy.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Integration MBR domestic sewage treatment device, including grid well (20), equalizing basin (21), integration treatment facility (36), ultraviolet disinfector (17) and sludge impoundment (35), its characterized in that: the device comprises a regulating tank (21), a grid well (20), a rotary fine grid (1), a primary lifting pump (3), two groups of submersible water impellers (4) and a secondary lifting pump (5), wherein the grid well (20) is connected to the left side of the regulating tank (21), one side of the grid well (20) is provided with the rotary fine grid (1), the other side of the grid well is provided with the primary lifting pump (3), the regulating tank (21) is internally provided with the two groups of submersible water impellers (4) and the secondary lifting pump (5), and the secondary lifting pump (5) is connected to an integrated water inlet pipe (23) through a lifting pump water outlet pipe (22);

a water inlet (24) connected with an integrated water inlet pipe (23) is formed in a grid (27) on the left side of the integrated treatment equipment (36), electromagnetic valves (19) are arranged at the tops of a sodium hypochlorite dosing barrel (25) and a backwashing tank (26) of the integrated treatment equipment (36), the electromagnetic valves (19) are connected to a first membrane pool water outlet pipe (31) through connecting pipes (37), a backwashing pump (9) and a self-sucking pump (10) on the left side of the integrated treatment equipment (36) are respectively connected with the backwashing tank (26) and the first membrane pool water outlet pipe (31), the self-sucking pump (10) is further connected to three groups of membrane bioreactors (29) of the integrated treatment equipment (36) through a second membrane pool water outlet pipe (30), and the backwashing pump (9) and the self-sucking pump (10) are connected through a backwashing water inlet pipe communicated with the second membrane pool water outlet pipe (30);

a sludge reflux pump (16) is further arranged inside the integrated treatment equipment (36), two sets of roots blowers (15) in the integrated treatment equipment (36) are connected with two sets of aeration main pipes (33) in the integrated treatment equipment (36) through air inlet pipes (28), a plurality of sets of aeration branch pipes (34) are further arranged on the aeration main pipes (33), and the air inlet pipes (28) are further connected with three sets of membrane bioreactors (29) through air pipes;

ultraviolet disinfector (17) set up in sludge impoundment (35) left side, intake pipe (28) still connect in sludge impoundment (35) bottom, first membrane cisterna outlet pipe (31) are connected in ultraviolet disinfector (17), ultraviolet disinfector (17) are through disinfection pipe connection in the pasteurization metering tank (18) in sludge impoundment (35), integration treatment facility (36) bottom is connected in sludge impoundment (35) through mud pipe (32).

2. The integrated MBR domestic sewage treatment device of claim 1, wherein: the one-level lift pump (3) is provided with two sets, and the water outlet of the one-level lift pump (3) is connected with the adjusting tank (21) through a pipeline.

3. The integrated MBR domestic sewage treatment device of claim 1, wherein: and a gate (2) enabling two sides of the grating well (20) to be communicated is arranged at the middle partition plate of the grating well.

4. The integrated MBR domestic sewage treatment device of claim 1, wherein: and a first check valve (6) and a butterfly valve (7) are sequentially arranged on the water outlet pipe (22) of the lifting pump.

5. The integrated MBR domestic sewage treatment device of claim 1, wherein: the backwashing water inlet pipe is sequentially provided with a second check valve (11) and a manual valve (12), the sodium hypochlorite dosing barrel (25) is connected to the backwashing water inlet pipe through a backwashing medicine pipe, the backwashing medicine pipe is provided with a dosing pump (8), and the second membrane pool water outlet pipe (30) is sequentially provided with a third check valve (13) and an electric valve (14).

6. The integrated MBR domestic sewage treatment device of claim 1, wherein: the bottom of the sludge pool (35) is connected with a plant sewage pipeline (38) and a sludge outlet pipe (39) of a dewatering machine room.