CN100340500C - Middle water reuse process with compound bacteria and membrane bioreactor and apparatus therefor - Google Patents
Middle water reuse process with compound bacteria and membrane bioreactor and apparatus therefor Download PDFInfo
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- CN100340500C CN100340500C CNB2004100185396A CN200410018539A CN100340500C CN 100340500 C CN100340500 C CN 100340500C CN B2004100185396 A CNB2004100185396 A CN B2004100185396A CN 200410018539 A CN200410018539 A CN 200410018539A CN 100340500 C CN100340500 C CN 100340500C
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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
Abstract
The present invention relates to a reclaimed water recycling technology with composite bacteria and a membrane biological reactor, which comprises: composite bacteria, such as bacillus, bacillus subtilis and nitrifying bacteria are adopted, a membrane biological reactor is adopted, and the composite bacteria are respectively put into an aeration tank and a membrane biological reaction tank; after sewage is filtered, the sewage orderly enters a regulation tank, the aeration tank and the membrane biological reaction tank, oxygenization degradation and biodegradation are carried out to the sewage, and finally, the sewage is separated and purified through a membrane device and sterilized in a sterilization tank to become reclaimed water which can be used for washing. In the technology of the present invention, the composite bacteria are used for reducing the residual amount of activated sludge, the high trapping characteristic of the membrane is used for trapping beneficial bacteria, the microorganism concentration of the aeration tank and the membrane biological reaction tank is increased, and the effluent water quality is improved; through a pulse type back washing technology, membrane flux is increased, the maintenance period and the service life of the membrane are extended, and the water treatment efficiency is increased. The equipment used by the present invention has the advantages of small occupation area, convenient installation, no need of special management, less power consumption and low treatment cost per ton of water.
Description
Technical field
The present invention relates to a kind of processing unit that is used for sewage disposal.But especially a kind ofly make sewage become the technology of the middle water of reuse and this technology institute specialized apparatus by composite bacteria and membrane bioreactor.
Background technology
Chinese patent 01120691.8 disclosed " integral type film biological reactor " is to hold back active sludge and larger molecular organics matter in the biochemical reaction tank by film, but will enter the middle water that sewage disposal in it becomes reuse.Though it can improve activated sludge concentration, increase hydraulic detention time, but also has following shortcoming: 1) because the common biological inoculum that is adopted in its biochemistry pool with it, can not fast and effeciently transform into soluble small-molecule substance to the organic particle that contains ammonia nitrogen, can not finish " circulation of ammonia " up hill and dale so that organism finally resolves into water, carbonic acid gas and nitrogen, so remaining sludge quantity is big, the organic contamination speed of film is fast, operator clean film and remove the cycle weak point of excess sludge, and the ability that equipment moves continuously is relatively poor, the processing costs height of unit water; 2) according to relevant document announcement: the unit surface membrane flux of film generally only is 5-10L/m in the membrane bioreactor
2.h.0.1Mpa[Liu Rui, 1999, water supply and drainage, VOL.25:(1), 1-4], so permeability rate is lower, yet the turbidity of sewage is but very high, and the removing of film dirt in existing this membrane bioreactor be by air-flow and liquid stream that aeration produces cause the vibration of film silk, clean on the surface, but this pollution to the film deep layer does not still play effect, therefore the pollution of its film is fast, the film permeability rate is low, and energy consumption is bigger.
The present invention will overcome the shortcoming that also exists in the above-mentioned prior art, a kind of middle water recovering process and equipment thereof with composite bacteria and membrane bioreactor is provided, so that the processing costs of the unit water of water recovering process is low in being somebody's turn to do, surplus sludge volume reduces, the cleaning interval prolongation of film, make this technology specialized apparatus long service life, power saving and ordinary maintenance amount few simultaneously.
The middle water recovering process of band composite bacteria of the present invention and membrane bioreactor is characterized in that: 1) select composite bacteria for use, it includes the genus bacillus that has formed product at present, Bacillus subtilus, nitrifier; 2) select membrane bioreactor for use, in this device, be provided with equalizing tank, the aeration tank, the membrane biological reaction pond, film device, sterilization pool, wherein in aeration tank and membrane biological reaction pond, throw in above-mentioned composite bacteria respectively, and the composite bacteria concentration in the aeration tank is (6000-7000) mg/l, composite bacteria concentration in the membrane biological reaction pond is (10000-12000) mg/l, and sewage is entered earlier in the equalizing tank after filtration more successively to regulate water quality and quantity, entering the aeration tank degrades to the sewage oxygenation, and entering the membrane biological reaction pond after the degraded further degrades, after film device separate purify after, enter sterilization pool again, by the water sterilization of routine, promptly become and to wash the middle water of usefulness as generality for people.
Composite bacteria is genus bacillus (BS22) in the above-mentioned middle water recovering process, Bacillus subtilus (TrpRS) or Bacillus subtilus (ATCC9372) or Bacillus subtilus (ATCC6633), and be exclusively used in the nitrifier that nitrification is decomposed ammonia nitrogen.
Above-mentioned middle water recovering process also can flow out the recoil cleaning process that has film device between passage and the sterilization pool at the water of film device.Can continue to carry out with water recovering process in guaranteeing.
For realizing technology specialized apparatus of the present invention, the aeration tank and the membrane biological reaction pond of the equalizing tank of band grid, band aeration tube in it contains; Wherein aeration tube penetrates aeration tank and membrane biological reaction pond successively by the in addition end that valve connects aeration pump, aeration tube, and the top that has aerator, aeration tank on the aeration tube has and can make water overflow into overflow groove in the membrane biological reaction pond in it; Film device, aeration tank and membrane biological reaction pond are housed in the membrane biological reaction pond have composite bacteria, and film device has middle water and confesses pipe by pipeline, pump connection sterilization pool on the sterilization pool.
Above-mentioned equipment can also be equipped with one group of magnetic valve that can clean film device with the recoil of the water after the sterilization on the water of film device flows out pipeline between pipeline, pump, the sterilization pool.
Beneficial effect of the present invention: 1) Johnson ﹠ Johnson of technology utilization composite bacteria of the present invention turns usefulness into, can reduce the residual volume of active sludge greatly, utilize the high property held back of film again, hold back probiotics, improve the microorganism concn in aeration tank and membrane biological reaction pond, improve the water quality of water outlet; 2) by pulsed backwash technology, increase membrane flux, prolong film maintenance period and work-ing life, improved water treatment efficiency; 3) the specific equipment floor space of technology of the present invention little, easy for installation, do not need the personal management, and current consumption is few, the cost of ton water treatment is low.
Description of drawings
Fig. 1 is the structural representation of the middle water recovering process institute specialized apparatus of band composite bacteria and membrane bioreactor.
Label declaration among the figure: 1-manhole; The 2-sewage induction pipe; 3-grid: 4-equalizing tank; The 5-aeration tank; The 6-aeration tube; The 7-aerator; The 8-film device; The 9-sterilization pool; Water is confessed pipe among the 10-; 11-membrane biological reaction pond; 12a, 12a ' and 12b, 12b '-magnetic valve; The 13-pump; The 14-aeration pump; The 15-valve; The 16-overflow groove.
Embodiment
The middle water recovering process of embodiment 1 present embodiment band composite bacteria and membrane bioreactor comprises: 1) select composite bacteria for use, this composite bacteria is and has formed product at present, and the genus bacillus that can buy (BS22), Bacillus subtilus (TrpRS), Bacillus subtilus (ATCC9372) or Bacillus subtilus (ATCC6633), subtilis (the Bacillus Subtilis that is provided in the technology exhibition booth by Hua Zhong Agriculture University) bacterial strain; The nitrifier that is exclusively used in nitrification decomposition ammonia nitrogen is to adopt Beijing promise to believe product---the hundred clean B-Te products that environmental science and technology company limited provides; 2) select membrane bioreactor for use, this device has equalizing tank, the aeration tank, the membrane biological reaction pond, film device, sterilization pool, wherein in aeration tank and membrane biological reaction pond, throw in above-mentioned composite bacteria respectively, and the composite bacteria concentration in the aeration tank is (6000-7000) mg/l, composite bacteria concentration in the membrane biological reaction pond is (10000-12000) mg/l, and sewage is entered earlier in the equalizing tank after filtration more successively to regulate water quality and quantity, enter the aeration tank and make sewage oxygenation degraded, and entering the membrane biological reaction pond after the degraded further degrades, after film device separate purify after, enter sterilization pool again, water sterilization by routine, as to drop into chlorinated lime, promptly become and to wash the middle water of usefulness as generality for people water sterilization.
Putting into the composite bacteria in aeration tank and the membrane biological reaction pond, is to adopt modern biotechnology that multiple beneficial bacterial classifications such as the genus bacillus that isolates and cultures from nature, Bacillus subtilus, subtilis, nitrifier are amplified, cultivate, are composited.
These microorganisms are breeding in a large number in the aeration tank, and the mushroom that is in starvation produces a large amount of vitro enzyme, quicken and finish the objectionable impuritiess such as degraded, removal of hydrogen sulfide of ammonia nitrogen in the sewage, argon nitrate, the organism in the high efficiency separation sewage, finally pass on and change into water, nitrogen and carbon dioxide and be discharged in the air.In this process, the flora interaction of microorganism species by replenishing mutually dispeled ammonia, argon nitrate and soluble organism; Compare with the existing simple nitrifier of employing, simple nitrifier is unfavorable for that the organic particle that will contain changes into soluble small-molecule substance, therefore just can not thoroughly finish ' circulation of ammonia ', so that organism finally is decomposed into water, carbonic acid gas and nitrogen.Make membrane bioreactor that membrane separation technique is organically combined with biotechnology in the technology of the present invention, active sludge in the biochemical reaction tank and larger molecular organics matter are held back, thereby can save the second pond in the existing water treatment, utilize the Johnson ﹠ Johnson of composite bacteria to turn usefulness into, reduce greatly active sludge residual volume, utilize the high property held back of film to hold back probiotics, and improve the microorganism concn in aeration tank and membrane biological reaction pond, improve the water quality of water outlet; Also utilize pulsed backwash technology to increase the flux of film, the maintenance period and the work-ing life of prolongation film.Compare advantages such as water recovering process has biochemical efficiency height, stable water outlet in the present embodiment, floor space is little, sludge discharging period is long, the automatic control of easy realization with existing similar water technology.
For realizing technology specialized apparatus of the present invention, can from Fig. 1, see.The equalizing tank 4 of band grid 3 in it contains, have a device shell of the aeration tank 5 of aeration tube 6 and membrane biological reaction pond 11, sterilization pool 9 respectively; Wherein aeration tube 6 penetrates aeration tank 5 and membrane biological reaction pond 11 successively by the end in addition that valve 15 connects aeration pumps 14, aeration tube, and the top that has aerator 7, aeration tank 5 on the aeration tube has the overflow groove 16 that can make water overflow into membrane biological reaction pond 11 in it; Film device 8 is housed in the membrane biological reaction pond 11, and this device is communicated with sterilization pool 9 by pipeline and pump 13, and water is confessed pipe 10 in having on the sterilization pool.Film on the film device is the film that adopts in the existing similar membrane bioreactor, and it can be the diaphragm of band hollow-fibre membrane silk, and its micro-pore diameter is (0.1-0.4) μ m.Have the manhole 1 that is convenient to operation and keeps in repair on above-mentioned equalizing tank 4, aeration tank 5 and membrane biological reaction pond 11, the sterilization pool 9 respectively.
Sewage enters after grid 3 filters and can play a part to regulate water quality and quantity equalizing tank 4, enters aeration tank 5 then; Air is by aeration pump 14 and valve 15, and aeration tube 6, aerator 7 enter aeration tank 5, and to sewage oxygenation degraded, the water after the degraded flows into membrane biological reaction pond 11 by the overflow groove 16 at top, aeration tank, and the effect of the composite bacteria that contains within it is further degraded down; After this separation by film device 8 is purified, by pump 13 be drawn into sterilization pool 9, by after the sterilization of the chlorinated lime in the sterilization pool therefrom water confess pipe 10 and confess reuse.
Different is for the middle water recovering process of embodiment 2 present embodiment band composite bacterias and membrane bioreactor and embodiment 1: it also can flow out the recoil cleaning process that has film device between passage and the sterilization pool at the water of film device.So that film device in the working hour section of setting with the cleaning that recoils of the middle water after its sterilization, guarantee the working efficiency of film device, middle water recovering process continue carry out.
Water recovering process specific equipment in the present embodiment also can be seen from Fig. 1.It with embodiment 1 in equipment different is: it also is equipped with one group of magnetic valve (12a, 12a ' and 12b, 12b ') that can clean film device with the recoil of the water after the sterilization on the water of film device flows out pipeline between pipeline, pump 13, the sterilization pool 9.
When magnetic valve 12a, 12a ' close, and magnetic valve 12b, 12b ' open the then film silk filtration in the film device 8; Open as magnetic valve 12a, 12a ', and magnetic valve 12b, 12b ' close, then the sterilized water recoil that is sterilized in the pond of the film silk in the film device 8 is cleaned.Therefore,, can carry out back flushing, effectively reduce the efficient of water reuse in the pollution of film, the further raising film device by setting backwash and filter time cycle, automatic switchover magnetic valve 12a, 12a ', 12b, 12b '.
Claims (5)
1, a kind of middle water recovering process with composite bacteria and membrane bioreactor is characterized in that: 1) select composite bacteria for use, it includes the genus bacillus that has formed product at present, Bacillus subtilus, nitrifier; 2) select membrane bioreactor for use, in this device, be provided with equalizing tank, the aeration tank, the membrane biological reaction pond, film device, sterilization pool, wherein in aeration tank and membrane biological reaction pond, throw in above-mentioned composite bacteria and the composite bacteria concentration in the aeration tank respectively and be (6000-7000) mg/l, composite bacteria concentration in the membrane biological reaction pond is (10000-12000) mg/l, and sewage is entered earlier in the equalizing tank after filtration more successively to regulate water quality and quantity, entering the aeration tank degrades to the sewage oxygenation, and entering the membrane biological reaction pond after the degraded further degrades, and after film device separates purification, enter sterilization pool again, by the water sterilization of using of routine, promptly become and to wash the middle water of usefulness as generality.
2, the middle water recovering process of band composite bacteria according to claim 1 and membrane bioreactor, it is characterized in that: said composite bacteria is genus bacillus (BS22), Bacillus subtilus (TrpRS) or Bacillus subtilus (ATCC9372) or Bacillus subtilus (ATCC6633), and be exclusively used in the nitrifier that nitrification is decomposed ammonia nitrogen.
3, the middle water recovering process of band composite bacteria according to claim 1 and 2 and membrane bioreactor is characterized in that: the water of said film device flows out the recoil cleaning process that has film device between passage and the sterilization pool.
4, for realizing claim 1 or 2 described technology specialized apparatus, it is characterized in that: be with the equalizing tank (4) of grid (3), the aeration tank (5) that has aeration tube (6) and membrane biological reaction pond (11) in it contains; Wherein aeration tube (6) penetrates aeration tank (5) and membrane biological reaction pond (11) successively by the end in addition that valve (15) connects aeration pump (14), aeration tube, and the top that has aerator (7), aeration tank (5) on the aeration tube has and can make water overflow into the interior overflow groove (16) in membrane biological reaction pond (11) in it; Be equipped with in the membrane biological reaction pond (11) in film device (8), aeration tank and the membrane biological reaction pond and have composite bacteria, and film device is communicated with sterilization pool (9) by pipeline, pump (13), water is confessed pipe (10) in having on the sterilization pool.
5, equipment according to claim 4 is characterized in that: one group of magnetic valve (12a, 12a ' and 12b, 12b ') that can clean film device (8) with the recoil of the water after the sterilization is housed on the pipeline between the water outflow pipeline of said film device (8), pump (13), the sterilization pool (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100185396A CN100340500C (en) | 2004-05-21 | 2004-05-21 | Middle water reuse process with compound bacteria and membrane bioreactor and apparatus therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100185396A CN100340500C (en) | 2004-05-21 | 2004-05-21 | Middle water reuse process with compound bacteria and membrane bioreactor and apparatus therefor |
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| CN1699216A CN1699216A (en) | 2005-11-23 |
| CN100340500C true CN100340500C (en) | 2007-10-03 |
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| CNB2004100185396A Expired - Fee Related CN100340500C (en) | 2004-05-21 | 2004-05-21 | Middle water reuse process with compound bacteria and membrane bioreactor and apparatus therefor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011059963A1 (en) * | 2009-11-10 | 2011-05-19 | Novozymes Biologicals, Inc. | Methods, compositions and systems for controlling fouling of a membrane |
| CN103739151A (en) * | 2013-11-15 | 2014-04-23 | 安徽省绿巨人环境技术有限公司 | Reclaimed water reuse system |
| CN104843858B (en) * | 2015-05-21 | 2016-10-05 | 浙江清华长三角研究院 | A kind of sewage disposal system and operation method thereof |
| CN108529748B (en) * | 2018-04-25 | 2021-07-27 | 浙江工业大学膜分离与水处理协同创新中心湖州研究院 | Synchronous nitrification and denitrification bioreactor |
| CN109160615A (en) * | 2018-07-21 | 2019-01-08 | 东南大学 | A kind of synchronous method alleviated membrane pollution of membrane bioreactor and control sludge yield |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0671275A (en) * | 1992-08-25 | 1994-03-15 | Toto Ltd | Septic tank |
| JPH0671279A (en) * | 1992-08-31 | 1994-03-15 | Toto Ltd | Septic tank provided with membrane separator and method for backwashing the separator |
| CN2598995Y (en) * | 2003-02-28 | 2004-01-14 | 沈祖志 | Automatic control fast biological film reaction sewage treatment equipment |
| CN1473775A (en) * | 2002-11-14 | 2004-02-11 | 中国人民解放军军事医学科学院卫生学 | Microbial reinforced film biological reactor for waste water purification and recovery |
| US6723245B1 (en) * | 2002-01-04 | 2004-04-20 | Nalco Company | Method of using water soluble cationic polymers in membrane biological reactors |
-
2004
- 2004-05-21 CN CNB2004100185396A patent/CN100340500C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0671275A (en) * | 1992-08-25 | 1994-03-15 | Toto Ltd | Septic tank |
| JPH0671279A (en) * | 1992-08-31 | 1994-03-15 | Toto Ltd | Septic tank provided with membrane separator and method for backwashing the separator |
| US6723245B1 (en) * | 2002-01-04 | 2004-04-20 | Nalco Company | Method of using water soluble cationic polymers in membrane biological reactors |
| CN1473775A (en) * | 2002-11-14 | 2004-02-11 | 中国人民解放军军事医学科学院卫生学 | Microbial reinforced film biological reactor for waste water purification and recovery |
| CN2598995Y (en) * | 2003-02-28 | 2004-01-14 | 沈祖志 | Automatic control fast biological film reaction sewage treatment equipment |
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| CN1699216A (en) | 2005-11-23 |
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