CN215756676U - MBR improvement type integration sewage treatment device - Google Patents
MBR improvement type integration sewage treatment device Download PDFInfo
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- CN215756676U CN215756676U CN202122526783.5U CN202122526783U CN215756676U CN 215756676 U CN215756676 U CN 215756676U CN 202122526783 U CN202122526783 U CN 202122526783U CN 215756676 U CN215756676 U CN 215756676U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model discloses MBR improved integrated domestic sewage treatment equipment, which comprises an anoxic tank, an aerobic tank, a biological selection tank, an MBR membrane tank and a clean water tank, wherein the anoxic tank is arranged in the anoxic tank; the anoxic tank is provided with a sewage inlet pipe and a perforated water distribution pipe, and the anoxic biological filler and a submersible stirrer are arranged in the anoxic tank; the aerobic tank is provided with an aerobic aeration device, the aerobic biological filler is arranged in the aerobic tank, and an anoxic-aerobic connecting channel is arranged between the aerobic tank and the anoxic tank; a grease isolator is arranged in the biological selection tank, and the inlet of the grease isolator is connected with the aerobic tank through an aerobic-biological selection connecting channel; an MBR membrane system is arranged in the MBR membrane tank, the water outlet end of the MBR membrane system is connected with a clean water tank through a clean water output pipeline, and a self-priming pump is arranged on the clean water output pipeline; an air stirring device is arranged in the MBR membrane tank, and a biological selection-MBR connecting channel is connected between the MBR membrane tank and the biological selection tank. The utility model has the advantages of novel design and good stability and reliability.
Description
Technical Field
The utility model relates to the technical field of domestic sewage purification treatment equipment, in particular to MBR improved integrated domestic sewage treatment equipment.
Background
In recent years, because China pays high attention to the treatment work of domestic sewage in villages and towns and rural areas, the integrated domestic sewage treatment equipment is widely applied to the purification treatment of the domestic sewage because of the characteristics of short manufacturing time, convenient transportation, simple and flexible installation, short construction period and the like; especially, the integrated domestic sewage treatment equipment adopting the MBR membrane process at the tail end is welcomed because of high automation degree, simple debugging and operation control and stable effluent quality.
It is pointed out that due to the complexity of rural domestic sewage, MBR membranes are easy to be blocked after a period of operation, thereby causing the phenomenon of reduced membrane flux; wherein, cause the MBR membrane to block up the reason and have several following aspects, specific:
1. biological pollution: MBR membrane is soaked in activated sludge for a long time, can breed various microorganisms in difficult avoiding under the environment of complicacy, and the inside mud save time of system is longer simultaneously, and the granule of mud self and settleability are all not ideal enough, and this is just forming biological slime phenomenon easily, incurs the resistance that membrane self accepted then higher. Meanwhile, residual BOD substances exist in the treatment liquid, and a large number of microorganisms are bred on the outer surface of the membrane after long-term reaction, which is also an important reason for the flux drop of the membrane; the activated sludge has high concentration and viscosity, and is easy to adhere to the surface of the membrane yarn and not washed away;
2. Inorganic pollution: the practice of inorganic pollution means that the thick inorganic salt substances in the liquid cause the membrane appearance to have the phenomenon of scaling and hardening, so that the membrane flux is rapidly reduced, the online cleaning has no effect, the membrane filaments are required to be detached, and the membrane filaments are rubbed and cleaned one by one;
3. organic pollution: the related statistical data indicate that the system water inlet oil content of the MBR membrane should not be higher than 20mg/L, and in terms of practical sewage condition, the main organic matters forming membrane pollution are petroleum substances, particularly heavy oil and dirty oil which are not biodegraded, and meanwhile, the backwashing effect of the MBR membrane can be influenced. In addition, many macromolecular organic polymers can cause certain pollution to the membrane.
In addition, when most of the integrated domestic sewage treatment equipment is used for treating rural domestic sewage at the present stage, the sewage is lack of the septic tank, and the amount of the self-driven vegetable oil in the sewage is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide MBR improved integrated domestic sewage treatment equipment aiming at the defects of the prior art, which has novel structural design and good stability and reliability, can effectively solve the problem that an MBR membrane is easy to block, and can effectively prolong the service life of the MBR membrane.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
An MBR improved integrated domestic sewage treatment device comprises an anoxic tank, an aerobic tank, a biological selection tank, an MBR membrane tank and a clean water tank which are sequentially arranged;
the anoxic tank is provided with a sewage inlet pipe and a perforated water distribution pipe positioned at the bottom of the anoxic tank, the sewage inlet pipe is connected with the perforated water distribution pipe, and anoxic biological fillers and a submersible mixer are arranged in the anoxic tank;
the aerobic tank is provided with an aerobic aeration device for carrying out aeration treatment on sewage in the tank, aerobic biological fillers are arranged in the aerobic tank, and an anoxic-aerobic connecting channel is arranged between the aerobic tank and the anoxic tank;
a grease isolator is arranged in the biological selection tank, and the inlet of the grease isolator is connected with the aerobic tank through an aerobic-biological selection connecting channel;
an MBR membrane system is arranged in the MBR membrane tank, the water outlet end of the MBR membrane system is connected with a clean water tank through a clean water output pipeline, and a self-priming pump is arranged on the clean water output pipeline; the MBR membrane tank is provided with an air stirring device, and a biological selection-MBR connecting channel for guiding the supernatant of the biological selection tank to the MBR membrane tank is connected between the MBR membrane tank and the biological selection tank.
Wherein, the aerobic aeration device comprises a blower and an aeration pipe positioned at the bottom of the aerobic tank, and an air outlet of the blower is connected with the aeration pipe through an air conveying pipeline.
Wherein a nitrifying liquid return pipe is connected between the anoxic tank and the aerobic tank, and the nitrifying liquid return pipe is provided with a nitrifying liquid return pump.
Wherein a sludge return pipe is connected between the anoxic tank and the biological selection tank, and the sludge return pipe is provided with a sludge return pump.
Wherein, gas agitating unit is including gas stirring driving fan, be located the gas stirring pipe in the pond of MBR membrane cisterna, and the air outlet of gas stirring driving fan passes through air conveying pipeline and gas stirring union coupling.
The membrane tank of the MBR membrane tank is also internally provided with a back-flushing pipe, the back-flushing pipe is connected with the clean water tank through a back-flushing pipeline, and the back-flushing pipeline is provided with a back-flushing pump.
Wherein the aerobic tank is provided with a PH adjusting device.
The PH adjusting device comprises an alkali liquor feeding pump, an alkali liquor container for containing alkali liquor, and an alkali liquor feeding pipeline for communicating an inner cavity of the alkali liquor container with the aerobic tank, wherein the alkali liquor feeding pump is installed on the alkali liquor feeding pipeline.
Wherein the clean water tank is provided with a clean water discharge pipe which is provided with a disinfectant adding device.
The disinfectant adding device comprises a disinfectant adding pump, a disinfectant container for containing disinfectant, and a disinfectant adding pipeline for communicating an inner cavity of the disinfectant container with the clear water discharge pipe, wherein the disinfectant adding pump is arranged on the disinfectant adding pipeline.
The utility model has the beneficial effects that: the utility model relates to MBR improved integrated domestic sewage treatment equipment, which comprises an anoxic tank, an aerobic tank, a biological selection tank, an MBR membrane tank and a clean water tank which are sequentially arranged; the anoxic tank is provided with a sewage inlet pipe and a perforated water distribution pipe positioned at the bottom of the anoxic tank, the sewage inlet pipe is connected with the perforated water distribution pipe, and anoxic biological fillers and a submersible mixer are arranged in the anoxic tank; the aerobic tank is provided with an aerobic aeration device for carrying out aeration treatment on sewage in the tank, aerobic biological fillers are arranged in the aerobic tank, and an anoxic-aerobic connecting channel is arranged between the aerobic tank and the anoxic tank; a grease isolator is arranged in the biological selection tank, and the inlet of the grease isolator is connected with the aerobic tank through an aerobic-biological selection connecting channel; an MBR membrane system is arranged in the MBR membrane tank, the water outlet end of the MBR membrane system is connected with a clean water tank through a clean water output pipeline, and a self-priming pump is arranged on the clean water output pipeline; the MBR membrane tank is provided with an air stirring device, and a biological selection-MBR connecting channel for guiding the supernatant of the biological selection tank to the MBR membrane tank is connected between the MBR membrane tank and the biological selection tank. Through the structural design, the membrane bioreactor has the advantages of novel structural design and good stability and reliability, and can effectively solve the problem that an MBR membrane is easy to block and effectively prolong the service life of the MBR membrane.
Drawings
The utility model will be further described with reference to the drawings to which, however, the embodiments shown in the drawings do not constitute any limitation.
FIG. 1 is a flow chart of the present invention.
In fig. 1, included are:
1-anoxic tank 11-sewage inlet pipe
12-perforated water distributor 13-anoxic biological filler
14-submersible mixer 2-aerobic tank
21-aerobic biological stuffing 22-blower
23-aeration pipe 3-biological selection tank
31-grease isolator 4-MBR membrane tank
41-MBR membrane system 42-air stirring driving fan
43-backwash pump 5-clean water tank
51-clear water discharge pipe 52-disinfectant feeding device
61-anoxic-aerobic connecting channel 62-aerobic-biological selection connecting channel
63-biological selection-MBR connecting channel 71-clear water output pipeline
72-self-priming pump 8-nitrifying liquid reflux pump
9-sludge reflux pump 100-PH adjusting device.
Detailed Description
The present invention will be described below with reference to specific embodiments.
As shown in fig. 1, an MBR improved integrated domestic sewage treatment device comprises an anoxic tank 1, an aerobic tank 2, a biological selection tank 3, an MBR membrane tank 4 and a clean water tank 5 which are sequentially arranged.
Wherein, the anoxic pond 1 is provided with a sewage inlet pipe 11 and a perforated water distribution pipe 12 positioned at the bottom of the anoxic pond 1, the sewage inlet pipe 11 is connected with the perforated water distribution pipe 12, and the anoxic biological filler 13 and a submersible mixer 14 are arranged in the anoxic pond 1.
Further, the aerobic tank 2 is provided with an aerobic aeration device for carrying out aeration treatment on sewage in the tank, the aerobic biological filler 21 is arranged in the aerobic tank 2, and an anoxic-aerobic connecting channel 61 is arranged between the aerobic tank 2 and the anoxic tank 1.
Furthermore, a grease separator 31 is arranged in the biological selection tank 3, and the inlet of the grease separator 31 is connected with the aerobic tank 2 through an aerobic-biological selection connecting channel 62.
In addition, an MBR membrane system 41 is arranged in the MBR membrane tank 4, the water outlet end of the MBR membrane system 41 is connected with a clean water tank 5 through a clean water output pipeline 71, and a self-priming pump 72 is arranged on the clean water output pipeline 71; the MBR membrane tank 4 is provided with a gas stirring device, and a biological selection-MBR connecting channel 63 for guiding the supernatant of the biological selection tank 3 to the MBR membrane tank 4 is connected between the MBR membrane tank 4 and the biological selection tank 3.
The aerobic aeration device can adopt the following structural design, in particular: the aerobic aeration device comprises an air blower 22 and an aeration pipe 23 positioned at the bottom of the aerobic tank 2, and an air outlet of the air blower 22 is connected with the aeration pipe 23 through an air conveying pipeline; of course, the above-mentioned structural design does not limit the present invention, i.e., the aerobic aeration apparatus of the present invention can also adopt other structural designs.
The gas stirring device of the present invention may be designed in the following structure, specifically: the gas stirring device comprises a gas stirring driving fan 42 and a gas stirring pipe (not shown in the figure) positioned in the MBR membrane tank 4, and the air outlet of the gas stirring driving fan 42 is connected with the gas stirring pipe through an air conveying pipeline. Of course, the above-mentioned structural design does not constitute a limitation of the present invention, i.e. the gas stirring device of the present invention may also adopt other structural designs.
It is further noted that the MBR membrane tank 4 is also provided with a back-flushing pipe inside, the back-flushing pipe is connected with the clean water tank 5 through a back-flushing pipe, and the back-flushing pipe is provided with a back-flushing pump 43.
Furthermore, the clean water tank 5 is provided with a clean water discharge pipe 51, and the clean water discharge pipe 51 is provided with a disinfectant adding device 52; specifically, the disinfectant adding device 52 includes a disinfectant adding pump (not shown in the figure), a disinfectant container (not shown in the figure) for containing the disinfectant, and a disinfectant adding pipeline (not shown in the figure) for communicating an inner cavity of the disinfectant container with the clear water discharge pipe 51, and the disinfectant adding pump is installed on the disinfectant adding pipeline. In the process of adding the disinfectant into the clean water discharge pipe 51 by the disinfectant adding device 52, the controller controls the disinfectant adding pump to be started, and the disinfectant in the disinfectant container is supplied into the clean water discharge pipe 51 by the disinfectant adding pump through the disinfectant adding pipeline.
In the process of treating domestic sewage, the domestic sewage is firstly introduced into the anoxic tank 1 through the sewage inlet pipe 11 and the perforated water distribution pipe 12, the perforated water distribution pipe 12 positioned at the bottom of the anoxic tank 1 distributes water uniformly, in the process, the submersible stirrer 14 is started and stirs and mixes the sewage, sludge and microorganisms growing on the anoxic biological filler 13 in the anoxic tank 1, so that the domestic sewage generates biological anoxic reaction in the anoxic tank 1, the designed retention time of the anoxic tank 1 is 0.5-1 hour, and the dissolved oxygen of the anoxic tank 1 is maintained within the range of 0.2-0.5 mg/L; after the sewage stays in the anoxic tank 1 completely and biological anoxic reaction is completed, the sewage flows out of the anoxic tank 1 and flows into the aerobic tank 2 through the anoxic-aerobic connecting channel 61, air is sent into the aeration pipe 23 through the air conveying pipeline by the blower 22 under the action of the aerobic aeration device, the aeration pipe 23 carries out aeration treatment on the sewage, so that the sewage, sludge and microorganisms growing on the aerobic biological filler 21 in the aerobic tank 2 are stirred and mixed, and then the sewage in the aerobic tank 2 is subjected to biological aerobic reaction, in the process, the microorganisms can absorb phosphorus in the sewage, the designed stay time of the aerobic tank 2 is 4-5 hours, and dissolved oxygen is maintained within the range of 2-4 mg/L; after the sewage stays in the aerobic tank 2 and biological aerobic reaction is completed, the sewage flows out of the aerobic tank 2 and flows into the grease isolator 31 through the aerobic-biological selection connecting channel 62, the grease isolator 31 can isolate animal and vegetable oil carried by the sewage, the sewage after isolating the animal and vegetable oil enters the biological selection tank 3 and is settled in the biological selection tank 3, the staying time of the biological selection tank 3 is 0.5-1 hour, in the process, the sewage is simply separated from solid in the biological selection tank 3, sludge is settled at the bottom of the biological selection tank 3, and supernatant formed after solid-liquid separation flows into the membrane tank 4 through the biological selection-MBR connecting channel 63; the supernatant flowing out of the biological selection tank 3 is subjected to microfiltration in an MBR membrane tank 4 through an MBR membrane system 41, sewage subjected to microfiltration in the MBR membrane system 41 is changed into clear water, the clear water flows into a clear water tank 5 through a clear water output pipeline 71 under the driving action of a self-priming pump 72, the designed retention time of the MBR membrane tank is 1-2 hours, and the dissolved oxygen is maintained within the range of 4-6 mg/L; the clear water entering the clear water tank 5 can be directly discharged through the clear water discharge pipe 51, and in the process, the disinfectant adding device 52 adds the disinfectant into the clear water discharge pipe 51 to disinfect the discharged clear water, so that the discharged clear water meets the discharge standard.
It is further noted that for the bio-selection tank 3 of the present invention, it is also possible to control the microorganisms entering the MBR membrane tank 4, maintaining the amount of microorganisms in the MBR membrane tank 4 within a reasonable range.
It should be emphasized that, in the process of microfiltration of sewage by the MBR membrane system 41 in the MBR membrane tank 4, the gas stirring driving fan 42 in the gas stirring device is started and the gas stirring fan introduces air into the gas stirring pipe through the air conveying pipeline, and the gas stirring pipe scours the surface of the MBR membrane to prevent the membrane surface from scaling; meanwhile, the large aeration quantity can prevent the sludge from accumulating too much and polluting the membrane. When the MBR membrane needs to be backwashed, the backwash pump 43 is started, and the MBR membrane is backwashed by the clean water in the clean water tank 5 through the backwash pipe under the driving action of the backwash pump 43.
According to the above situation, the MBR membrane provided by the utility model has the advantages of novel structural design and good stability and reliability, and can effectively solve the problem that the MBR membrane is easy to block and effectively prolong the service life of the MBR membrane.
As a preferred embodiment, as shown in FIG. 1, a nitrifying liquid return pipe is connected between the anoxic tank 1 and the aerobic tank 2, and the nitrifying liquid return pipe is provided with a nitrifying liquid return pump 8. In the process that domestic sewage generates biological anoxic reaction in the anoxic tank 1, the nitrification liquid reflux pump 8 can convey nitrification liquid in the aerobic tank 2 to the anoxic tank 1, so that sewage in the anoxic tank 1 can simultaneously perform nitrification reaction.
As a preferred embodiment, as shown in FIG. 1, a sludge return pipe is connected between the anoxic tank 1 and the biological selection tank 3, and the sludge return pipe is provided with a sludge return pump 9. In the working process of the utility model, the sludge settled at the bottom of the biological selection tank 3 can flow back to the anoxic tank 1 through the sludge return pipe.
In a preferred embodiment, the aerobic tank 2 is provided with a pH adjusting device 100; specifically, the PH adjusting device 100 includes an alkali liquor feeding pump (not shown in the figure), an alkali liquor container (not shown in the figure) for containing alkali liquor, and an alkali liquor feeding pipeline (not shown in the figure) for communicating an inner cavity of the alkali liquor container with the aerobic tank 2, wherein the alkali liquor feeding pump is installed in the alkali liquor feeding pipeline.
In the process of adjusting the pH of the sewage in the aerobic tank 2, the controller controls the alkali liquor feeding pump to start, and the alkali liquor feeding pump feeds the alkali liquor in the alkali liquor container into the aerobic tank 2 through the alkali liquor feeding pipeline.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. The utility model provides an MBR improvement type integration sewage treatment device which characterized in that: comprises an anoxic tank (1), an aerobic tank (2), a biological selection tank (3), an MBR membrane tank (4) and a clean water tank (5) which are arranged in sequence;
the anoxic tank (1) is provided with a sewage inlet pipe (11) and a perforated water distribution pipe (12) positioned at the bottom of the anoxic tank (1), the sewage inlet pipe (11) is connected with the perforated water distribution pipe (12), and an anoxic biological filler (13) and a submersible stirrer (14) are arranged in the anoxic tank (1);
the aerobic tank (2) is provided with an aerobic aeration device for carrying out aeration treatment on sewage in the tank, the aerobic biological filler (21) is arranged in the aerobic tank (2), and an anoxic-aerobic connecting channel (61) is arranged between the aerobic tank (2) and the anoxic tank (1);
a grease isolator (31) is arranged in the biological selection tank (3), and the inlet of the grease isolator (31) is connected with the aerobic tank (2) through an aerobic-biological selection connecting channel (62);
an MBR membrane system (41) is arranged in the MBR membrane tank (4), the water outlet end of the MBR membrane system (41) is connected with a clean water tank (5) through a clean water output pipeline (71), and a self-priming pump (72) is arranged on the clean water output pipeline (71); an air stirring device is assembled in the MBR membrane tank (4), and a biological selection-MBR connecting channel (63) for draining the supernatant of the biological selection tank (3) to the MBR membrane tank (4) is connected between the MBR membrane tank (4) and the biological selection tank (3).
2. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: the aerobic aeration device comprises an air blower (22) and an aeration pipe (23) positioned at the bottom of the aerobic tank (2), and an air outlet of the air blower (22) is connected with the aeration pipe (23) through an air conveying pipeline.
3. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: a nitrifying liquid return pipe is connected between the anoxic tank (1) and the aerobic tank (2), and the nitrifying liquid return pipe is provided with a nitrifying liquid return pump (8).
4. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: a sludge return pipe is connected between the anoxic tank (1) and the biological selection tank (3), and the sludge return pipe is provided with a sludge return pump (9).
5. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: the gas stirring device comprises a gas stirring driving fan (42) and a gas stirring pipe positioned in the MBR membrane pool (4), and the air outlet of the gas stirring driving fan (42) is connected with the gas stirring pipe through an air conveying pipeline.
6. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: a back washing pipe is also arranged in the MBR membrane tank (4), the back washing pipe is connected with the clean water tank (5) through a back washing pipeline, and the back washing pipeline is provided with a back washing pump (43).
7. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: the aerobic tank (2) is provided with a PH adjusting device (100).
8. The MBR improved integrated domestic sewage treatment device of claim 7, wherein: the PH adjusting device (100) comprises an alkali liquor feeding pump, an alkali liquor container for containing alkali liquor, and an alkali liquor feeding pipeline for communicating the inner cavity of the alkali liquor container with the aerobic tank (2), wherein the alkali liquor feeding pump is installed on the alkali liquor feeding pipeline.
9. The MBR improved integrated domestic sewage treatment device of claim 1, wherein: the clean water tank (5) is provided with a clean water discharge pipe (51), and the clean water discharge pipe (51) is provided with a disinfectant adding device (52).
10. The MBR improved integrated domestic sewage treatment device of claim 9, wherein: the disinfectant adding device (52) comprises a disinfectant adding pump, a disinfectant container for containing disinfectant, and a disinfectant adding pipeline for communicating the inner cavity of the disinfectant container with the clear water discharge pipe (51), wherein the disinfectant adding pump is arranged on the disinfectant adding pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526783.5U CN215756676U (en) | 2021-10-20 | 2021-10-20 | MBR improvement type integration sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526783.5U CN215756676U (en) | 2021-10-20 | 2021-10-20 | MBR improvement type integration sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215756676U true CN215756676U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202122526783.5U Active CN215756676U (en) | 2021-10-20 | 2021-10-20 | MBR improvement type integration sewage treatment device |
Country Status (1)
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| CN (1) | CN215756676U (en) |
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2021
- 2021-10-20 CN CN202122526783.5U patent/CN215756676U/en active Active
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