CN205170495U - Low energy consumption membrane bioreactor - Google Patents
Low energy consumption membrane bioreactor Download PDFInfo
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- CN205170495U CN205170495U CN201520845702.XU CN201520845702U CN205170495U CN 205170495 U CN205170495 U CN 205170495U CN 201520845702 U CN201520845702 U CN 201520845702U CN 205170495 U CN205170495 U CN 205170495U
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Abstract
Low energy consumption membrane bioreactor and sewage treatment method (LEMB) relate to sewage treatment technical field, including at least one reaction canal, an at least membrane cisterna A, an at least membrane cisterna B, reaction canal membrane cisterna A of UNICOM and membrane cisterna B's bottom, membrane cisterna A and membrane cisterna B middle part are equipped with an at least membrane module respectively, the bottom is equipped with aeration equipment respectively, at first to membrane cisterna A aeration, membrane cisterna B is the aeration not during the operation, and air stripping rivers flow through in proper order membrane cisterna A, membrane cisterna B, reaction canal, membrane cisterna A realize air stripping circulation many times, provide the dissolved oxygen through the membrane cisterna aeration for the reaction canal to there have been oxygen, oxygen deficiency or even anaerobic environment in proper order in the reaction canal, it realizes that two -way the washing of membrane flows to the conversion with the reaction zone regularly to switch the aeration between membrane cisterna A and membrane cisterna B. The utility model discloses the membrane qichong is washed the aeration rate and is reduced 50%, and biochemical aeration rate reduces 70 -100%, and the power consumption of liquid circulation pump reduces 100%, and energy -conserving effect is showing.
Description
Technical field
The utility model relates to membrane filtration and technical field of sewage, particularly a kind of low-power membrane bioreactor.
Background technology
The mankind cause catastrophic pollution in the activity of nearly decades to global environment.Human needs reduces and clears up these pollutions within the time of coming few decades.Wherein water pollutions is one of sixty-four dollar question.Reducing and clearing up in the effort of water pollutions, the sewage disposal technology of innovation is particularly important.
Membrane filtration is combined with active sludge sewage treatment and creates membrane bioreactor (MBR) technology.Good activated sludge process is only had to be combined to obtain with membrane filtration and to apply more widely up to now.Aerobic MBR sewage disposal technology is higher than traditional aerobic activated sludge process pond appearance efficiency, product quality is more guaranteed.But there is numerous technical problem at present in MBR, aerobic MBR technology needs " biochemical aeration " with the oxygen providing aerobic reaction to need, also need " film gas flushing aeration " in order to reduce film surface contamination, also need to use " liquid circulating pump " between biochemistry pool and membrane cisterna, it is higher that this three aspects energy consumption makes aerobic MBR technology consume energy simultaneously.It is reported that film gas flushing aeration in MBR technique, biochemical aeration, liquid circulating pump and other power consumptions account for about 45%, 30%, 10% and 15% of total power consumption respectively.The aerobic MBR oxygen overall utilization of tradition is generally lower than 5%.
In Chinese patent (patent No. 20180450526.0) Airlift oxidation ditch type membrane bioreactor, processing unit forms oxygen-starved area, anaerobic zone and aerobic zone successively along water (flow) direction; Described aerobic zone comprises the first aeration zone, the second aeration zone and disengaging zone, and membrane filter appts is arranged in the first aeration zone; Motion time is not to aeration in the first aeration zone and the second aeration zone, and the film of higher aeration intensity rinses the gas lift water jet propulsion oxidation ditch current of aeration generation, has saved liquid circulating pump.But its energy expenditure still includes the biochemical aeration energy consumption of film gas flushing aeration in the first aeration zone and the second aeration zone.
The submerged membrane filtration unit that a kind of two-way liquid stream of Chinese patent application (application number 201510312899.5) washes away comprises a membrane cisterna, at least one group of membrane stack, one to be positioned at the flow skirt at membrane stack top, wherein said membrane stack contour and form near film row together by least two; To a film row gas explosion during use, and another film arranges not gas explosion, the liquid in aeration film row under gas stripping to upper reaches, until this film row top, this upwards liquid stream turn under described flow skirt effect, and arrange to dirty through the film of not aeration; For some time switching aeration film row and aeration film row, thus the two-way liquid stream realizing film washes away.This device has saved the film gas flushing power consumption of about 50%, but film gas flushing kinetic energy is consumed in membrane cisterna.This technical scheme does not solve being coupled between membrane cisterna with biochemical reaction tank, and by film, the oxygen rinsed in aeration does not make full use of, and still needs the power consumption of biochemical aeration and liquid circulating pump.
The purpose of this utility model MBR film gas flushing aeration will be saved 50%, and avoid using liquid circulating pump, cancellation or lowering bio-aeration, disclose a kind of low-power membrane bioreactor, energy-saving effect is about more than 50%.
Summary of the invention
In order to reach above object, the utility model low-power membrane bioreactor (LEMB, LEMBR) (LowEnergyconsumptionMembraneBioreactor) comprises a reaction tank, be arranged in described reaction tank and have at least one longitudinally partition, the reaction zone that described reaction tank is separated into by described partition and membrane cisterna, in described membrane cisterna, vertically establish at least one longitudinal membrane cisterna to cut off with described longitudinally the partition, membrane cisterna is separated into equal membrane cisterna A and membrane cisterna B by this membrane cisterna partition, described membrane cisterna cuts off top significantly lower than reaction tank top, at least one membrane module is respectively equipped with in the middle part of membrane cisterna A and membrane cisterna B, described in described partition bottom UNICOM, reaction zone and membrane cisterna A are provided with at least one communication passage A, described in described partition bottom UNICOM, reaction zone and membrane cisterna B are provided with at least one communication passage B, in described reaction zone, be provided with at least one reaction zone cut off, described reaction zone is separated at least one reaction canal by described reaction zone partition, at least one communication passage B UNICOM that at least one communication passage A that described membrane cisterna A divides into by described reaction canal and described membrane cisterna B divides into, be respectively equipped with aerating apparatus A and aerating apparatus B bottom membrane cisterna A and membrane cisterna B, described aerating apparatus A and aerating apparatus B connects with at least one admission passage respectively, at least one water producing pipe road connects with the membrane module water producing pipe road being positioned at membrane cisterna A and membrane cisterna B respectively, at least one suction culvert that described reaction tank is arranged, at least one overflow passage, at least one mud line, described overflow passage is positioned at described reaction tank top and defines reaction zone water level, low-power membrane bioreactor also comprises necessary water pump, blower fan, valve, instrument, Membrane cleaning system and automatic control system.
Also comprise at least one upper reaches flow deflector in described reaction canal, upper reaches flow deflector height is lower than described reaction zone water level.
Be provided with between inherent adjacent two the upper reaches flow deflectors of described reaction canal and flow flow deflector, bottom dirty flow deflector, be provided with water stream channel.
Biologic packing material is provided with in described reaction zone.
Use the low-power membrane biological respinse sewage water treatment method of low-power membrane bioreactor, comprise by opening aerating apparatus A to described membrane cisterna A bottom uniform aeration, aeration intensity meets membrane cisterna A film and rinses aeration intensity requirement, closes aerating apparatus B and stops to described membrane cisterna B bottom aeration; Air lift current are at membrane cisterna A to upper reaches, and membrane cisterna A water level is promoted under gas stripping, membrane cisterna A intimal surface by rinse to current; Under gas stripping, membrane cisterna B water level is lower than membrane cisterna A water level, and air lift current are crossed membrane cisterna partition top from membrane cisterna A and entered membrane cisterna B, and then to dirty, membrane cisterna B intimal surface is rinsed to current by lower; Air lift current enter reaction canal through being positioned at communication passage B bottom described membrane cisterna B and prolonging the flowing of reaction canal, and the communication passage A then divided into through membrane cisterna A enters bottom membrane cisterna A, and is promoted by air lift in membrane cisterna A, realizes air lift circulation; Produce water through membrane filtration by least one water producing pipe road output; Exchange-column shift aeration, namely opens aerating apparatus B, to described membrane cisterna B bottom uniform aeration, closes aerating apparatus A, stops to described membrane cisterna A bottom aeration, realizes water (flow) direction conversion in the bidirectional flushing of described membrane module and reaction zone irrigation canals and ditches.
Air lift current obtain dissolved oxygen at membrane cisterna A, dissolved oxygen flows through in membrane cisterna B and reaction canal process at after this current and is progressively consumed, form aerobic, anoxic even anaerobic environment successively, when again entering bottom membrane cisterna A, in current, dissolved oxygen is deficient, is conducive to the dissolving mass transfer process of gas oxygen.Air lift circular flow normally processes more than tens times of flow, and therefore sewage repeatedly circulates in this bio-reactor, and constantly by film the oxygen rinsed in aeration bring reaction canal into, so generally do not need special biochemical aeration.
Low-power membrane bioreactor is also provided with reaction tank microporous aeration device bottom described reaction zone.
Use this kind to comprise the sewage water treatment method of the low-power membrane bioreactor of reaction tank microporous aeration device substantially identical with above-mentioned low-power membrane biological respinse sewage water treatment method, difference is also to start reaction tank microporous aeration device.
The beneficial effect of low-power membrane bioreactor and sewage water treatment method comprises, film is rinsed aeration rate and save 50%, bio-aeration amount is saved 100%, saving 100% of being consumed energy by liquid circulating pump, totally energy-conservationly be about 62.5% of traditional MBR membranous system, energy-saving effect is remarkable; In reaction canal, the dissolved oxygen prolonged in water (flow) direction air lift current progressively reduces, and achieves simultaneous nitrification and denitrification, and due to effect while aerobic, anoxic even anaerobic environment, residue biological sludge is effectively degraded.
For with serious pollution sewage, this low-power membrane bioreactor needs to open reaction tank microporous aeration device, the 25-30% of biochemical aeration amount when aeration rate is about traditional this type of water of MBR system process.
Accompanying drawing explanation
The first low-power membrane bioreactor of Fig. 1 overlooks principle schematic
Fig. 2 the second low-power membrane bioreactor overlooks principle schematic
The third low-power membrane bioreactor of Fig. 3 overlooks principle schematic
Fig. 4 the first, the second and the third low-power membrane bioreactor AA cross-sectional schematic schematic diagram
Fig. 5 the first, the second and the third low-power membrane bioreactor BB cross-sectional schematic schematic diagram
Fig. 6 the 4th kind of low-power membrane bioreactor overlooks principle schematic
Fig. 7 the 4th kind of low-power membrane bioreactor CC cross-sectional schematic schematic diagram
In figure: 1. reaction tank, 2. cut off, 4. reaction zone, 5. react canal, 6. membrane cisterna, 6A. membrane cisterna A, 6B. membrane cisterna B, 7A. communication passage A, 7B. communication passage B, 8. membrane cisterna cuts off, and 9. reactor cuts off, 10. suction culvert, 11. overflow passages, 20. water producing pipe roads, 23. upper reaches flow deflectors, 24. dirty flow deflectors, 30. mud line, 40. admission passages, 41A. aerating apparatus A, 41B. aerating apparatus B, 81. reactor water levels, 82. membrane cisterna B water levels, 83. membrane cisterna A water levels, 100. membrane modules.
Necessary water pump, blower fan, valve, under meter is have ignored for simplicity's sake, Membrane cleaning system and automatic control system in figure.
Embodiment
See Fig. 1 to Fig. 7, first to fourth kind of low-power membrane bioreactor, it is characterized in that comprising a reaction tank (1), be arranged in described reaction tank (1) and have at least one longitudinally partition (2), the reaction zone (4) that described reaction tank (1) is separated into by described partition (2) and membrane cisterna (6), in described membrane cisterna (6), longitudinally cut off that (2) are vertical establishes at least one longitudinal membrane cisterna to cut off (8) with described, this membrane cisterna cuts off (8) and membrane cisterna (6) is separated into equal membrane cisterna A (6A) and membrane cisterna B (6B), described membrane cisterna cuts off (8) top significantly lower than reaction tank (1) top, membrane cisterna A (6A) and membrane cisterna B (6B) middle part is respectively equipped with at least one membrane module (100), described in the UNICOM of described partition (2) bottom, reaction zone (4) is provided with at least one communication passage A (7A) with membrane cisterna A (6A), described in the UNICOM of described partition (2) bottom, reaction zone (4) is provided with at least one communication passage B (7B) with membrane cisterna B (6B), in described reaction zone (4), be provided with at least one reaction zone cut off (9), described reaction zone cuts off (9) and described reaction zone (4) is separated at least one reaction canal (5), at least one communication passage B (7B) UNICOM that at least one communication passage A (7A) that described membrane cisterna A (6A) is divided into by described reaction canal (5) divides into described membrane cisterna B (6B), membrane cisterna A (6A) and membrane cisterna B (6B) bottom is respectively equipped with aerating apparatus A (41A) and aerating apparatus B (41B), and described aerating apparatus A (41A) and aerating apparatus B (41B) connect with at least one admission passage (40) respectively, at least one water producing pipe road (20) connects with membrane module (100) the water producing pipe road being positioned at membrane cisterna A (6A) and membrane cisterna B (6B) respectively, upper at least one suction culvert (10), at least one overflow passage (11), at least one mud line (30) arranged of described reaction tank (1), described overflow passage (11) is positioned at described reaction tank (1) top and defines reaction zone water level (81), low-power membrane bioreactor also comprises necessary water pump, blower fan, valve, instrument, Membrane cleaning system and automatic control system.
Also comprise at least one upper reaches flow deflector (23) in described reaction canal (5), upper reaches flow deflector (23) height is lower than described reaction zone water level (81).A described upper reaches flow deflector (23) is as far as possible close to described partition (2), to reducing below membrane cisterna A and membrane cisterna B aeration water level (83) to described upper reaches flow deflector (23) height during membrane module (100) matting, now can realize membrane module chemical immersion and aeration cleaning on the spot, avoid reaction zone (4) microorganism to touch pharmaceutical chemicals simultaneously.
Be provided with between inherent adjacent two the upper reaches flow deflectors (23) of described reaction canal (5) and flow flow deflector (24), dirty flow deflector (24) bottom is provided with water stream channel.
Described reaction zone is provided with biologic packing material in (4).This place's filler can be the mixing of a kind of in fixed bed or floating bed or at least two kinds.Biologic packing material is conducive to biochemical efficiency and sludge degradation, is conducive to reducing sludge content in membrane filtration air lift current and thus lowers membrane filtration pressure.
What the first low-power membrane bioreactor represented is comparatively simple low-power membrane bioreactor, only has a membrane cisterna to cut off (8) and reaction zone partition (9); The second, the third and the 4th kind of low-power membrane bioreactor, list several MBR system comprising multiple membrane cisterna and cut off (8) and multiple reaction zone partition (9); Scope of the present utility model is not limit by several form should.
5th kind of low-power membrane bioreactor concept is simple, does not represent by the form of figure.
Use the low-power membrane biological respinse sewage water treatment method of first to fourth kind of low-power membrane bioreactor, comprise and open aerating apparatus A (41A) to described membrane cisterna A (6A) bottom uniform aeration, aeration intensity meets membrane cisterna A (6A) film and rinses aeration intensity requirement, closes aerating apparatus B (41B) and stops to described membrane cisterna B (6B) bottom aeration; Air lift current are at membrane cisterna A (6A) to upper reaches, and membrane cisterna A water level (83) is promoted under gas stripping, membrane cisterna A (6A) intimal surface by rinse to current; Under gas stripping, membrane cisterna B water level (82) is lower than membrane cisterna A water level (83), air lift current are crossed membrane cisterna partition (8) top from membrane cisterna A (6A) and are entered membrane cisterna B (6B), then to dirty, membrane cisterna B (6B) intimal surface is rinsed to current by lower; Air lift current enter reaction canal (5) through being positioned at described membrane cisterna B (6B) bottom communication passage (7B) and prolonging reaction canal (5) flowing, then the communication passage A (7A) divided into through membrane cisterna A (6A) enters membrane cisterna A (6A) bottom, and promoted by air lift in membrane cisterna A (6A), realize air lift circulation; Produce water through membrane filtration by least one water producing pipe road (20) output.Exchange-column shift aeration, namely aerating apparatus B (41B) is opened, to described membrane cisterna B (6B) bottom uniform aeration, close aerating apparatus A (41A), stop to described membrane cisterna A (6A) bottom aeration, realize water (flow) direction conversion in the bidirectional flushing of described membrane module (100) and reaction zone irrigation canals and ditches.
Use upper reaches flow deflector (23) or use upper reaches flow deflector (23) and dirty flow deflector (24) that the increase of air lift current is flowed to up and down, increase current flow process, can effectively avoid mud at reaction canal (50) bottom deposit.
5th kind of low-power membrane bioreactor installs reaction tank microporous aeration device in described reaction tank (4) bottom.When processed water is seriously polluted, current adopt reaction tank microporous aeration device aeration to supplement the demand of biochemical reaction to dissolved oxygen when the dissolved oxygen that membrane cisterna obtains is not enough.
Use the low-power membrane biological respinse sewage water treatment method of the 5th kind of low-power membrane bioreactor and use the sewage water treatment method of first to fourth kind of low-power membrane bioreactor similar, difference is to adopt pond microporous aeration device to supplement aeration to reaction zone (4).
Claims (5)
1. a low-power membrane bioreactor, it is characterized in that comprising a reaction tank (1), be arranged in described reaction tank (1) and have at least one longitudinally partition (2), the reaction zone (4) that described reaction tank (1) is separated into by described partition (2) and membrane cisterna (6), in described membrane cisterna (6), longitudinally cut off that (2) are vertical establishes at least one longitudinal membrane cisterna to cut off (8) with described, this membrane cisterna cuts off (8) and membrane cisterna (6) is separated into equal membrane cisterna A (6A) and membrane cisterna B (6B), described membrane cisterna cuts off (8) top significantly lower than reaction tank (1) top, membrane cisterna A (6A) and membrane cisterna B (6B) middle part is respectively equipped with at least one membrane module (100), described in the UNICOM of described partition (2) bottom, reaction zone (4) is provided with at least one communication passage A (7A) with membrane cisterna A (6A), described in the UNICOM of described partition (2) bottom, reaction zone (4) is provided with at least one communication passage B (7B) with membrane cisterna B (6B), in described reaction zone (4), be provided with at least one reaction zone cut off (9), described reaction zone cuts off (9) and described reaction zone (4) is separated at least one reaction canal (5), at least one communication passage B (7B) UNICOM that at least one communication passage A (7A) that described membrane cisterna A (6A) is divided into by described reaction canal (5) divides into described membrane cisterna B (6B), membrane cisterna A (6A) and membrane cisterna B (6B) bottom is respectively equipped with aerating apparatus A (41A) and aerating apparatus B (41B), and described aerating apparatus A (41A) and aerating apparatus B (41B) connect with at least one admission passage (40) respectively, at least one water producing pipe road (20) connects with membrane module (100) the water producing pipe road being positioned at membrane cisterna A (6A) and membrane cisterna B (6B) respectively, upper at least one suction culvert (10), at least one overflow passage (11), at least one mud line (30) arranged of described reaction tank (1), described overflow passage (11) is positioned at described reaction tank (1) top and defines reaction zone water level (81), low-power membrane bioreactor also comprises necessary water pump, blower fan, valve, instrument, Membrane cleaning system and automatic control system.
2. low-power membrane bioreactor according to claim 1, it is characterized in that also comprising at least one upper reaches flow deflector (23) in described reaction canal (5), upper reaches flow deflector (23) height is lower than described reaction zone water level (81).
3. low-power membrane bioreactor according to claim 2, it is characterized in that being provided with between inherent adjacent two the upper reaches flow deflectors (23) of described reaction canal (5) flowing flow deflector (24), dirty flow deflector (24) bottom is provided with water stream channel.
4. the low-power membrane bioreactor according to claim 1,2 or 3, is characterized in that being provided with biologic packing material in described reaction zone (4).
5. the low-power membrane bioreactor according to claim 1,2 or 3, is characterized in that bottom, described reaction zone (4) is also provided with microporous aeration device.
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| CN201520845702.XU CN205170495U (en) | 2015-10-29 | 2015-10-29 | Low energy consumption membrane bioreactor |
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| CN201520845702.XU CN205170495U (en) | 2015-10-29 | 2015-10-29 | Low energy consumption membrane bioreactor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293700A (en) * | 2015-10-29 | 2016-02-03 | 北京格兰特膜分离设备有限公司 | Low-energy-consumption membrane bioreactor and sewage treatment method |
| CN106517500A (en) * | 2017-01-16 | 2017-03-22 | 邵俊轩 | Fixed bed MBR (membrane bioreactor) device |
| CN106745731A (en) * | 2016-11-22 | 2017-05-31 | 邵俊轩 | A kind of fluid bed MBR equipment |
| CN106745745A (en) * | 2017-01-16 | 2017-05-31 | 邵俊轩 | A kind of improved MBR equipment |
| CN106830327A (en) * | 2017-03-24 | 2017-06-13 | 格蓝特环保工程(北京)有限公司 | Low energy consumption couples membrane bioreactor and sewage water treatment method |
-
2015
- 2015-10-29 CN CN201520845702.XU patent/CN205170495U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293700A (en) * | 2015-10-29 | 2016-02-03 | 北京格兰特膜分离设备有限公司 | Low-energy-consumption membrane bioreactor and sewage treatment method |
| CN106745731A (en) * | 2016-11-22 | 2017-05-31 | 邵俊轩 | A kind of fluid bed MBR equipment |
| CN106517500A (en) * | 2017-01-16 | 2017-03-22 | 邵俊轩 | Fixed bed MBR (membrane bioreactor) device |
| CN106745745A (en) * | 2017-01-16 | 2017-05-31 | 邵俊轩 | A kind of improved MBR equipment |
| CN106830327A (en) * | 2017-03-24 | 2017-06-13 | 格蓝特环保工程(北京)有限公司 | Low energy consumption couples membrane bioreactor and sewage water treatment method |
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Address after: 2 Xibinhe Road, Miyun County, Beijing, 101312 Patentee after: Huazi Grant Environmental Protection Technology (Beijing) Co.,Ltd. Address before: 2 Xibinhe Road, Miyun County, Beijing, 101312 Patentee before: BEIJING GRANT MEMBRANE SEPARATION EQUIPMENT Co.,Ltd. |