CN1215993C - Batch type integrated membrane bioreactor - Google Patents
Batch type integrated membrane bioreactor Download PDFInfo
- Publication number
- CN1215993C CN1215993C CN031335713A CN03133571A CN1215993C CN 1215993 C CN1215993 C CN 1215993C CN 031335713 A CN031335713 A CN 031335713A CN 03133571 A CN03133571 A CN 03133571A CN 1215993 C CN1215993 C CN 1215993C
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- Prior art keywords
- phosphorus
- water
- pump
- stage
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012528 membrane Substances 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000010802 sludge Substances 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000006228 supernatant Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 4
- 239000002562 thickening agent Substances 0.000 claims description 4
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000005276 aerator Methods 0.000 claims 1
- 238000001471 micro-filtration Methods 0.000 claims 1
- 238000000108 ultra-filtration Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 15
- 239000011574 phosphorus Substances 0.000 abstract description 15
- 241000894006 Bacteria Species 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 7
- 229910002651 NO3 Inorganic materials 0.000 abstract description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 230000002950 deficient Effects 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 238000006396 nitration reaction Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000011268 retreatment Methods 0.000 abstract 1
- 230000008719 thickening Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 238000005273 aeration Methods 0.000 description 10
- 229920000388 Polyphosphate Polymers 0.000 description 5
- 229920000037 Polyproline Polymers 0.000 description 5
- 239000001205 polyphosphate Substances 0.000 description 5
- 235000011176 polyphosphates Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- -1 phosphoric acid salt Chemical class 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000001146 hypoxic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention belongs to the technical field of sewerage treatment and reclaimed water recycle in environment engineering, which is characterized in that an aerobic environment, an oxygen deficient environment and an anaerobic environment are realized in the same reaction tank so as to sufficiently remove nitrogen and phosphorus pollutants. A blower and a suction pump are synchronously started. The operation of organic matter degradation, ammonia and nitrogen nitration, and excessive phosphorus suction is completed in an aerobic stage. A time relay controls the blower and the suction pump to stop working, simultaneously, a lifting pump and a stirrer are started, the lifting pump pumps water with high flow quantity so as to provide sufficient carbon sources for denitrification, and a liquid level controller is used for controlling the lifting pump to stop working. After the blower stops working, dissolved oxygen is fast exhausted, and nitrate is in denitrification in an oxygen deficient stage so that the content of the nitrate is reduced. Phosphorus gathering bacteria sufficiently release phosphorus in an anaerobic stage. The rest sludge containing the phosphorus is periodically discharged to a sludge thickening tank by an air lifting pump so that the volume of sludge is reduced and supernatant fluid self flows to a regulation tank for retreatment. The present invention has the advantages of high capability of denitrification and phosphorus removal, simple flow path, convenient operation and low energy consumption, and can be used for treating and recycling sewage with high contents of nitrogen and phosphorus.
Description
Technical field
The invention belongs to field of environment engineering technology, relate to sewage disposal and technology of middle water recycle, particularly the method for membrane biological reactor process denitrogenation dephosphorizing function realization.
Background technology
China is one of 13 poor-water states in the world, is the water resources of saves valuable, and middle water reuse is one of effective way.Domestic and international research proves, with the membrane biological reactor process of membrane filtration and biological degradation combination is a kind of efficient, practical sewage disposal and technology of middle water recycle, but membrane bioreactor denitrogenation dephosphorizing scarce capacity can't satisfy the water quality requirement of increasingly stringent.
The regenerated sewage that nitrogen and phosphorus content is high will cause following main harm when being back to industrial colling, industrial process waters or municipal miscellaneous water: make the receiving water body eutrophication; Cause water pipe, watering equipment breeding biofouling, thereby result in blockage or influence efficient; Increase disinfectant consumption, when improving water producing cost, reduce the security of water quality.Town sewage second-stage treatment plant effluent water quality phosphoric acid salt≤0.5mg/L has been proposed, the strict demand of ammonia nitrogen≤15mg/L at " integrated wastewater discharge standard " in (GB8978-1996).
Traditional A
2/ O method synchronous denitrogen dephosphorus technology needs anaerobic pond, anoxic pond, Aerobic Pond and four pond bodies of second pond, and the Aerobic Pond water outlet need be circulated back to anoxic pond by the reflux pump agency part, realizes the nitrification liquid denitrogenation; The second pond phosphorus containing sludge need be circulated back to anaerobic pond by the sludge pump agency part, and the realization polyP bacteria is fully put phosphorus.This technical process complexity, energy consumption height, not easy to operate and control, and this technology water outlet supernatant liquor that is second pond, effluent quality is poor, can not as in water realize reuse.
Summary of the invention
The purpose of this invention is to provide a kind of method that makes membrane bioreactor have the denitrogenation dephosphorizing function, its required device is called sequence batch (integrated film bio-reactor.With this method design-and-build membrane bioreactor, will it be removed enough fully effectively keeping on former basis that has superiority to nitrogen and phosphorus pollutants mass-energy, and simple to operate, be easy to realization.
Realize that the technical scheme that makes membrane bioreactor have the denitrogenation dephosphorizing functional method of the present invention is:
In membrane bioreactor, set up stirrer, utilize the start-stop mode and the working time of the control of the fluid level controller and the time relay stirrer, gas blower, inlet water lifting pumps and four equipment of water outlet suction pump, in same reaction tank, realize aerobic, anoxic, three kinds of environment of anaerobism.During the gas blower aeration, produce bubble by bubble aeration device in the inversed umbrella type, in abundant disturbance film silk, decelerating membrane pollution, active sludge provides competent oxygen in reaction tank, make it be in oxygen condition, thereby heterotrophic bacterium degradable organic pollutant matter, nitrobacteria is oxidized to nitrate with ammonia nitrogen, and polyP bacteria carries out excessive absorption to phosphorus.When gas blower stopped aeration, suction pump stopped, and stirrer starts, and guaranteed that active sludge is in suspended state, and muddy water mixes in the reaction tank.Lift pump is intake with big flow simultaneously, in the short as far as possible time, makes the reaction tank water level return to top water-level, is stopped by fluid level controller control lift pump.The turn on pump that is lift pump is controlled by the time relay, and to stop be to be controlled by fluid level controller.A large amount of water inlets provide competent electron donor for denitrification in short period of time after stopping aeration, need not additional carbon; And avoided denitrifying bacteria and polyP bacteria to the competition of organic substrates, guaranteed good phosphor-removing effect; Entering of a large amount of organic carbons can make dissolved oxygen reduce rapidly, guarantees enough anoxic, the anaerobism time in the reaction tank.Anoxic stage denitrifying bacteria is that carbon source makes nitrate be converted into the nitrogen effusion with carbonaceous organic material in the waste water, realizes denitrogenation completely.Nitrate concentration reduces gradually, enters anaerobic stages, and polyP bacteria is fully put phosphorus.After stopping aeration, by denitrifying bacteria and polyP bacteria effect, organism also can further be removed.After anaerobic state finished, by time relay control, gas blower was opened, and made that active sludge has reentered oxygen condition in the reaction tank.
Present method can reinforced film biological reactor denitrogenation dephosphorizing function reason mainly be: adopt the operation scheme of sequence batch (, microorganism be in hypoxic/anaerobic/aerobic alternative environment; After stopping aeration, concentrate water inlet in the short period of time, guaranteed enough lacking/the anaerobism time; Can according to the water inlet nitrogen and phosphorus content, with regard to the cycle and the exchange than carrying out simple adjustment, the handiness height.
And, after stopping aeration in present method, the water outlet peristaltic pump stops suction, make material in the mixed solution to the reaction force attenuation of film silk apparent motion, and stirrer starts simultaneously, still there is perturbation action in the film silk, helps film silk surface attachment material, pollute thereby can alleviate film to the diffusion of mixed solution direction.
The phosphorous excess sludge of reaction tank regularly drains into sludge thickener by airlift pump, makes it concentrate, subtract appearance, and supernatant liquor returns equalizing tank and handles.The gas blower aeration phase only need be opened valve on the branch road, and mud just can realize that gas carries other consumed power.
Effect of the present invention and benefit be that the denitrogenation dephosphorizing ability is strong, flow process is simple, easy to operate, energy consumption is low, can be used for handling high nitrogen and phosphorus content sewage, centering water reuse project is particularly suitable.
Description of drawings
Accompanying drawing is a sequence batch (integrated film biological reactor process schematic flow sheet.
Among the figure: (1) gas blower; (2) lift pump; (3) stirrer; (4) suction pump; (5) membrane module; (6) bubble aeration device in the inversed umbrella type; (7) airlift pump; (8) valve; (9) reaction tank; (10) equalizing tank; (11) sludge thickener.
Embodiment
Below in conjunction with accompanying drawing, describe the most preferred embodiment of the inventive method and device in detail.
Embodiment
The C/N ratio is usually more than 10: 1 in the sanitary sewage, and this moment, the setting-up time rly. switched in per 1 hour.If water inlet C/N ratio is lower than 10: 1, then can prolong the time of aerobic stage in the loop cycle, strengthen nitrification; Simultaneously, improve the aquifer yield of aerobic stage, increase the organic carbon source amount that enters reactor in the short period of time of scarce/anaerobic stages, intensified anti-nitrated effect.
Technology is the periodic operation, and each cycle is divided into two stages, i.e. aerobic stage and scarce/anaerobic stages.Gas blower (1) starts synchronously with suction pump (4), and in this stage, a water outlet is not intake, and reaction tank (9) water level descends, and this is an aerobic stage.After 1 hour, by time relay control, gas blower (1) is out of service with suction pump (4), and meanwhile, lift pump (2) and stirrer (3) start synchronously.Lift pump (2) is intake with big flow, in the as far as possible short time, makes reaction tank (9) water level return to top water-level, the stopping of lift pump (2) by fluid level controller control, and this is for lacking/anaerobic stages.After 2 hours, stirrer (3) is stopped by time relay control, and gas blower (1) is restarted with suction pump (4) simultaneously, finishes a loop cycle.During the gas blower aeration, regularly open valve (8), phosphorous excess sludge drains into sludge thickener (11) by airlift pump (7), and mud concentrates at the bottom of the pond, and supernatant liquor returns equalizing tank (10) and handles.Robot control system(RCS) of the present invention is simple, is easy to realize, can make membrane bioreactor have splendid denitrogenation dephosphorizing ability.
Claims (4)
1. method that adopts sequence batch (operation scheme reinforced film biological reactor denitrogenation dephosphorizing function, its feature is as follows:
1) this technology is the periodic operation, and each cycle is divided into two stages, i.e. aerobic stage and scarce/anaerobic stages;
2) gas blower and water outlet suction pump start synchronously, and in this stage, a water outlet is not intake, and the reaction tank water level descends, and this is an aerobic stage;
3) after aerobic stage was finished, by time relay control, gas blower and suction pump were out of service, and meanwhile, inlet water lifting pumps and stirrer start synchronously; Inlet water lifting pumps is intake with big flow, in the short period of time, makes the reaction tank water level return to top water-level, the stopping of lift pump by fluid level controller control, and this is anoxic and anaerobic stages;
4) lack/after anaerobic stages was finished, stirrer was stopped by time relay control, and gas blower and water outlet suction pump simultaneously restarted, and finishes a loop cycle.
2. a kind of method that adopts sequence batch (operation scheme reinforced film biological reactor denitrogenation dephosphorizing function according to claim 1 is characterized by: lacking/water inlet of anaerobism section initial set, no longer intaking in the one-period.
3. a kind of method that adopts sequence batch (operation scheme reinforced film biological reactor denitrogenation dephosphorizing function according to claim 1, it is characterized by: described membrane bioreactor is the bottom that ultrafiltration or micro-filtration membrane module place square activated sludge tank, and there is aerator the membrane module below.
4. a kind of method that adopts sequence batch (operation scheme reinforced film biological reactor denitrogenation dephosphorizing function according to claim 1, it is characterized by: phosphorous excess sludge drains into sludge thickener by airlift pump, mud concentrates at the bottom of the pond, and supernatant liquor returns equalizing tank and handles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN031335713A CN1215993C (en) | 2003-05-30 | 2003-05-30 | Batch type integrated membrane bioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN031335713A CN1215993C (en) | 2003-05-30 | 2003-05-30 | Batch type integrated membrane bioreactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1454856A CN1454856A (en) | 2003-11-12 |
| CN1215993C true CN1215993C (en) | 2005-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN031335713A Expired - Fee Related CN1215993C (en) | 2003-05-30 | 2003-05-30 | Batch type integrated membrane bioreactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN1215993C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304304C (en) * | 2005-09-08 | 2007-03-14 | 山东大学 | Process for two-step type bioreactor for sludge decrement |
| CN100384759C (en) * | 2006-05-12 | 2008-04-30 | 南京大学 | Drink-water biological treatment method of realizing synchronous nitration and counter nitration |
| CN101074141B (en) * | 2007-06-20 | 2010-05-19 | 大连春兴水处理科技发展有限公司 | Process for regenerating, recovering and reutilizing low-concentration organic waste water |
| CN101215045B (en) * | 2008-01-22 | 2010-06-09 | 天津工业大学 | Three-compartment immersion type anaerobic film bioreactor |
| CN101250008B (en) * | 2008-03-25 | 2010-06-02 | 北京城市排水集团有限责任公司 | Device and method for developing interior carbon source of sewage treatment plant |
| CN101513590B (en) * | 2009-02-19 | 2011-02-16 | 北京科技大学 | Processing device of ammoniacal odor and spray liquid and operation method thereof |
| CN101885538B (en) * | 2009-05-15 | 2013-02-27 | 江西金达莱环保股份有限公司 | Membrane bioreactor process for removing phosphorus without mud discharge |
| CN101885537B (en) * | 2009-05-15 | 2011-12-07 | 江西金达莱环保研发中心有限公司 | Process for treating sewage with low sludge content |
| CN101973677A (en) * | 2010-10-29 | 2011-02-16 | 上海优博环境工程有限公司 | Sequencing batch submerged membrane bioreactor |
| CN104556550B (en) * | 2014-04-09 | 2016-06-29 | 高吁萍 | A kind of efficiently mental retardation lessening membrane fouling MBR devices and methods therefor |
| CN109110918A (en) * | 2018-09-18 | 2019-01-01 | 戚汝常 | A kind of novel SBR-MBR sewage disposal system and technique |
| CN111620521A (en) * | 2020-06-04 | 2020-09-04 | 湖南易净环保科技有限公司 | Sewage treatment system and sewage treatment method |
| CN111995077A (en) * | 2020-08-03 | 2020-11-27 | 优德太湖水务（苏州）有限公司 | Distributed sewage treatment automatic control device and method |
-
2003
- 2003-05-30 CN CN031335713A patent/CN1215993C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1454856A (en) | 2003-11-12 |
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