CN211004970U

CN211004970U - Membrane bioreactor integration sewage treatment device

Info

Publication number: CN211004970U
Application number: CN201921128291.7U
Authority: CN
Inventors: 赵振胜
Original assignee: Weifang Zeyu Environmental Protection Equipment Co ltd
Current assignee: Weifang Zeyu Environmental Protection Equipment Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-07-14
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a membrane bioreactor integrated sewage treatment device, which comprises a sewage treatment device main body, the inside of the sewage treatment equipment main body is sequentially provided with a hydrolysis acidification tank, a contact oxidation tank, an MBR tank, a disinfection tank and a sludge tank, the disinfection tank and the sludge tank are positioned at the same side of the MBR tank, a plurality of first air distribution pipes and a plurality of second air distribution pipes are arranged at the bottoms of the hydrolysis acidification tank and the contact oxidation tank, an air pipe is arranged at the top of the outer side of the sewage treatment equipment main body, and a plurality of first air distribution pipes and a plurality of second air distribution pipes are connected with the air pipe through pipelines, an MBR membrane group is arranged in the MBR tank, the membrane component of the utility model replaces a terminal secondary sedimentation tank of the traditional biological treatment technology, maintaining a high activated sludge concentration in the bioreactor increases the biological treatment organic load, thereby reducing sewage treatment facility floor space and reducing excess sludge by maintaining a low sludge load.

Description

Membrane bioreactor integration sewage treatment device

Technical Field

The utility model relates to a sewage treatment device technical field specifically is a membrane bioreactor integration sewage treatment device.

Background

Sewage treatment: the sewage is purified to reach the water quality requirement of being discharged into a certain water body or being reused. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.

MBR (Membrane bioreactor) is also called Membrane bioreactor (Membrane Bio-Reactor), which is a novel water treatment technology combining a Membrane separation unit and a biological treatment unit, but the existing MBR has imperfect result design, so that the quality of Membrane effluent cannot reach and exceed the first-level A standard in Table 1 of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a membrane bioreactor integrated sewage treatment device, which keeps high activated sludge concentration in a bioreactor by replacing a terminal secondary sedimentation tank of the traditional biological treatment technology with a membrane component, improves the organic load of biological treatment, thereby reducing the occupied area of sewage treatment facilities and reducing the amount of excess sludge by keeping low sludge load; the MBR membrane group adopts a PVDF hollow fiber membrane, the aperture is 0.1-0.4 mu m, the membrane flux is 0.3-0.5 m3/(m 2. d), so that the effluent quality of the membrane can stably reach and is superior to the first-class A standard in the table 1 of pollutant discharge standard of municipal wastewater treatment plant (GB 18918-2002).

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a membrane bioreactor integration sewage treatment device, includes sewage treatment device main part, inside hydrolysis-acidification pond, contact oxidation pond, MBR pond, disinfection pond and the sludge impoundment of being equipped with in proper order of sewage treatment device main part, and disinfection pond and sludge impoundment all are located the homonymy in MBR pond, hydrolysis-acidification pond and contact oxidation pond bottom all are equipped with many first gas distribution pipes and second gas distribution pipe, sewage treatment device main part outside top is equipped with the air duct, and many first gas distribution pipes and second gas distribution pipe all are connected with the air duct through the pipeline, be equipped with the MBR membrane group in the pond, and the other end of air duct passes through the pipeline and is connected with the MBR membrane group, and the MBR membrane group passes through pipe connection and gets into in the disinfection pond, be equipped with the fluorine pipe in the disinfection pond, sewage treatment device main part outside top is equipped with the hand.

Preferably, a water distribution pipe is further arranged in the hydrolysis acidification tank, a water inlet is formed in the position, corresponding to the water distribution pipe, on the outer side of the sewage treatment equipment main body, and the water inlet is connected with the water distribution pipe.

Preferably, the MBR membrane group adopts a PVDF hollow fiber membrane, the aperture is 0.1-0.4 μm, and the membrane flux is 0.3-0.5 m3/(m2 d).

Preferably, a plurality of aeration heads are uniformly arranged on the upward side surface of the second air distribution pipe.

Preferably, the hydrolysis acidification tank and the contact oxidation tank are filled with biological fillers in the middle.

Preferably, one side of the contact oxidation pond corresponding to the MBR pond is provided with an overflow weir, and the overflow weir is positioned on the upper side of the biological filler.

Preferably, a water outlet is formed in the position, corresponding to the disinfection tank, on the outer side of the sewage treatment device main body.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model replaces the terminal secondary sedimentation tank of the traditional biological treatment technology with the membrane component, keeps the high activated sludge concentration in the bioreactor, improves the organic load of biological treatment, thereby reducing the occupied area of sewage treatment facilities and reducing the excess sludge amount by keeping low sludge load; the MBR membrane group adopts a PVDF hollow fiber membrane, the aperture is 0.1-0.4 mu m, the membrane flux is 0.3-0.5 m3/(m 2. d), so that the effluent quality of the membrane can stably reach and is superior to the first-class A standard in the table 1 of pollutant discharge standard of municipal wastewater treatment plant (GB 18918-2002).

Drawings

FIG. 1 is a cross-sectional view of the present invention;

fig. 2 is a top view of the present invention.

In the figure: 1. a sewage treatment apparatus main body; 2. a hydrolysis acidification pool; 3. a contact oxidation pond; 4. an MBR tank; 5. a disinfection tank; 6. a sludge tank; 7. a first gas distribution pipe; 8. a second gas distribution pipe; 9. an air tube; 10. MBR membrane group; 11. adding a fluorine pipe; 12. an access hole; 13. a water distribution pipe; 14. a water inlet; 15. an aeration head; 16. biological fillers; 17. an overflow weir; 18. and (7) a water outlet.

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a membrane bioreactor integrated sewage treatment device comprises a sewage treatment device main body 1, wherein a hydrolysis acidification tank 2, a contact oxidation tank 3, an MBR tank 4, a disinfection tank 5 and a sludge tank 6 are sequentially arranged in the sewage treatment device main body 1, the disinfection tank 5 and the sludge tank 6 are both positioned at the same side of the MBR tank 4, a plurality of first air distribution pipes 7 and a plurality of second air distribution pipes 8 are respectively arranged at the bottoms of the hydrolysis acidification tank 2 and the contact oxidation tank 3, an air pipe 9 is arranged at the top of the outer side of the sewage treatment equipment main body 1, and a plurality of first air distribution pipes 7 and a plurality of second air distribution pipes 8 are connected with an air pipe 9 through pipelines, an MBR membrane group 10 is arranged in the MBR tank 4, the other end of the air pipe 9 is connected with an MBR membrane group 10 through a pipeline, the MBR membrane group 10 is connected into the disinfection tank 5 through a pipeline, a fluorine adding pipe 11 is arranged in the disinfection tank 5, and an inlet hole 12 is arranged at the position of the top of the outer side of the sewage treatment equipment main body 1, which is opposite to the hydrolysis acidification tank 2.

The hydrolysis acidification tank 2 is also internally provided with a water distribution pipe 13, a water inlet 14 is arranged at the position of the outer side of the sewage treatment equipment main body 1 corresponding to the water distribution pipe 13, the water inlet 14 is connected with the water distribution pipe 13, a PVDF hollow fiber membrane is adopted in the MBR membrane group 10, the pore diameter is 0.1-0.4 mu m, the membrane flux is 0.3-0.5 m3/(m 2. d), the upward side surface of the second air distribution pipe 8 is uniformly provided with a plurality of aeration heads 15, biological fillers 16 are filled in the middle parts of the hydrolysis acidification tank 2 and the contact oxidation tank 3, one side of the contact oxidation tank 3 corresponding to the MBR tank 4 is provided with an overflow weir 17, the overflow weir 17 is positioned at the upper side of the biological fillers 16, and a water outlet 18 is arranged at the position of the outer side of the sewage treatment equipment main.

The working principle is that an MBR membrane group 10 is used for replacing a tail end secondary sedimentation tank of the traditional biological treatment technology, the concentration of high-activity sludge is kept in a bioreactor, the organic load of biological treatment is improved, the floor area of a sewage treatment facility is reduced, the amount of residual sludge is reduced by keeping low sludge load, activated sludge and macromolecular organic matters in water are intercepted mainly by membrane separation equipment, the concentration of the activated sludge (M L SS) in a membrane bioreactor system can be increased to 8000-10000 mg/L or even higher, the sludge age (SRT) can be prolonged to more than 30 days, microorganisms with a long period can be reserved by the membrane bioreactor due to the effective interception effect of the membrane bioreactor, the sewage can be purified deeply by generations, meanwhile, nitrifying bacteria can be fully propagated in the system, the nitrification effect is obvious, and the deep phosphorus and nitrogen removal is possible, wherein a PVDF hollow fiber membrane is adopted in the MBR membrane group 10, the pore diameter is 0.1-0.4 mu M, and the flux is 0.3-0.5M 3/(M2 d), so that membrane effluent can stably reach and is superior to the discharge standard of urban sewage treatment plant (GB 1891) A18-A standard.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a membrane bioreactor integration sewage treatment device, includes sewage treatment device main part (1), its characterized in that: the sewage treatment equipment comprises a sewage treatment equipment main body (1), wherein a hydrolysis acidification tank (2), a contact oxidation tank (3), an MBR tank (4), a disinfection tank (5) and a sludge tank (6) are sequentially arranged in the sewage treatment equipment main body (1), the disinfection tank (5) and the sludge tank (6) are positioned at the same side of the MBR tank (4), a plurality of first air distribution pipes (7) and a plurality of second air distribution pipes (8) are respectively arranged at the bottoms of the hydrolysis acidification tank (2) and the contact oxidation tank (3), an air pipe (9) is arranged at the top of the outer side of the sewage treatment equipment main body (1), the plurality of first air distribution pipes (7) and the plurality of second air distribution pipes (8) are respectively connected with the air pipe (9) through pipelines, an MBR membrane group (10) is arranged in the MBR tank (4), the other end of the air pipe (9) is connected with the MBR membrane group (10) through a pipeline, the MBR membrane group (10) is connected into the disinfection tank (, and the top of the outer side of the sewage treatment equipment main body (1) is provided with an inlet hole (12) at the position of the hydrolysis acidification tank (2).

2. The membrane bioreactor integrated sewage treatment device of claim 1, wherein: a water distribution pipe (13) is further arranged in the hydrolysis acidification tank (2), a water inlet (14) is arranged at the position, opposite to the water distribution pipe (13), of the outer side of the sewage treatment equipment main body (1), and the water inlet (14) is connected with the water distribution pipe (13).

3. The membrane bioreactor integrated sewage treatment device of claim 1, wherein: the MBR membrane group (10) adopts a PVDF hollow fiber membrane, the aperture is 0.1-0.4 mu m, and the membrane flux is 0.3-0.5 m3/(m2 d).

4. The membrane bioreactor integrated sewage treatment device of claim 1, wherein: a plurality of aeration heads (15) are uniformly arranged on the upward side surface of the second air distribution pipe (8).

5. The membrane bioreactor integrated sewage treatment device of claim 1, wherein: biological fillers (16) are filled in the middle parts of the hydrolysis acidification tank (2) and the contact oxidation tank (3).

6. The membrane bioreactor integrated sewage treatment device of claim 1, wherein: one side of the contact oxidation pond (3) corresponding to the MBR pond (4) is provided with an overflow weir (17), and the overflow weir (17) is positioned on the upper side of the biological filler (16).

7. The membrane bioreactor integrated sewage treatment device of claim 1, wherein: a water outlet (18) is arranged at the position of the outer side of the sewage treatment equipment main body (1) to the disinfection tank (5).