CN101139135A - Shooting flow film-bioreactor method and device - Google Patents
Shooting flow film-bioreactor method and device Download PDFInfo
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- CN101139135A CN101139135A CNA2007101463091A CN200710146309A CN101139135A CN 101139135 A CN101139135 A CN 101139135A CN A2007101463091 A CNA2007101463091 A CN A2007101463091A CN 200710146309 A CN200710146309 A CN 200710146309A CN 101139135 A CN101139135 A CN 101139135A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 38
- 239000003570 air Substances 0.000 claims description 34
- 238000009826 distribution Methods 0.000 claims description 20
- 238000005273 aeration Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000006213 oxygenation reaction Methods 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 14
- 239000001301 oxygen Substances 0.000 abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 abstract description 14
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005842 biochemical reaction Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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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 provides an operation method and device of jet membrane-bioreactor, namely that part of mud mixed liquor enters into a pipeline after pressured through a water pump to form high speed water flow by passing through a nozzle of a jet device to entrain surrounding air. Part of air is dissolved in the mixed liquor through the actions of mixing and cutting to form air-liquor spraying jet to oxygenize on the mud mixed liquor and scour on the membrane components through a diffusion air arrangement plate; simultaneously the air-liquor mixed flow drives the mud mixed liquor in a reactor to form inner recycle in the reactor which is helpful to mass and oxygen transfer, accelerate biochemical reaction and improve treatment efficiency. The device can realize membrane pollution control and improve oxygen utilization ratio simultaneously and has the advantages of low energy consumption, small noise, space saving, simple device structure and stable operation. The present invention is convenient for unmanned operation and control.
Description
Technical field
(Membrane Bioreactor, MBR) aeration blending means and device relate in particular to the jet mixed aeration method of a kind of MBR and realize the device of this method to the present invention relates to the integral type film-bioreactor of a kind of novel treatment water and waste water.
Background technology
The shortage of water resources problem has become obstruction social economy's Sustainable development and has influenced the stable important restraining factors of social life.1/4 of the only suitable world of China's water resource of per capita water resources ownership per capita occupy the 110th in the world, and spatial and temporal distributions is very inhomogeneous.It is reported in 668 cities of China, about 400 of lack of water city, the city of serious water shortage is above 100.Especially in recent years, along with socioeconomic fast development, industrial or agricultural water demand amount increases rapidly, and water resource waste and water resource pollution problem are on the rise, and makes China's shortage of water resources problem more outstanding.
It is good that MBR has an effluent quality, but the water outlet direct reuse, occupation area of equipment is little, excess sludge production is low and be convenient to advantage such as control automatically, and its application is the effective means of solution China shortage of water resources problem with promoting.But the film pollution that produces in the MBR operational process can cause membrane flux to reduce or resistance of membrane filtration rises, and directly influences the producing water ratio of system and increases operation energy consumption; The film pollution level has also determined the parallel-adder settle-out time of film simultaneously, influences working costs such as film cleaning.As seen to pollute be influence one of the most key factor that membrane technique applies to film, and strategy and the technology of therefore studying the controlling diaphragm pollution just seem particularly important.
Because MBR adopts micro-filtration or hyperfiltration membrane assembly to replace second pond, can make to obtain in the bio-reactor to improve the wastewater treatment ability greatly, and after membrane sepn, can obtain higher-quality water outlet than the high a lot of sludge concentration of common activated sludge process.And high sludge concentration requires to have in the reactor enough dissolved oxygens to keep the good oxygen condition and the sludge activity of mud, and this just needs to improve aeration rate or improve coefficient of oxygen utilization.Obviously improving aeration rate and be with bigger energy consumption is cost, and therefore improving coefficient of oxygen utilization becomes more feasible method.
The interior complete mixing flow state of MBR oxygen supply and reactor of realizing at present mainly adopts the mode of gas blower aeration, this aeration method has higher energy consumption, reason one is owing to the density of density of air far below mud mixed liquid, and blast aeration comes the bigger energy consumption of the needs of mixing fully of mud mixed liquid in the realization response device by bubble; The 2nd, blast aeration oxygen transfer efficient is low, and in order to satisfy the needs of high-concentration activated sludge in the MBR, needs strengthen aeration and cause energy consumption higher.In addition, can produce very big noise in the gas blower operational process, influence operator's health and surrounding enviroment.So optimizing the MBR technology needs the mode of blast aeration is improved.
In order to overcome the above problems, the investigator has successively made big quantity research and has obtained certain progress both at home and abroad, but all there is certain weak point in these means, really effectively are still less in actual applications.Therefore, will be significant at these problem exploitation corresponding techniques to applying of MBR.
To the effect of entrainmenting of air and introducing air, mass exchange and the momentum exchange by turbulent flow is blended in the water air to ejector again, reaches the requirement that increases oxygen in water content by high-speed water jet, fully satisfies in the pond microorganism to the demand of oxygen.Can strengthen simultaneously muddy water degree of mixing in the reactor, significantly increase film surface cross-flow velocity, help forming turbulent fluctuation preferably and delay the formation that film pollutes greatly on the membrane module surface.In addition, adopt the gas-liquid mixed stream that ejector ejects to come complete mixing flow in the realization response device, realize that with respect to the gas blower aeration this purpose energy consumption greatly reduces.And ejector still is a kind of lower noise equipment, the Working environment between can optimizing equipment.
In No. 98243066.3 Chinese patents, the contriver introduces MBR with ejector, only improves coefficient of oxygen utilization with it for the bio-reactor of external placed type MBR carries out aeration.Tan Ze etc. also propose integral type MBR is adopted jet-flow aeration, promptly draw mixed solution in the reactor with pump, form gas-liquid mixed stream through the external placed type ejector and enter reactor again.Because ejector is external must to be in a high position, so operation energy consumption is bigger.In addition, ejector is placed on the reactor outside, need occupy certain space, has increased floor space.And in the present invention, the applicant has proposed ejector is built in the MBR reactor, makes it be in low level, so can cut down the consumption of energy and save the space; Proposition has also realized that the diffusion air distribution plate carries out the air water uniform distribution, can produce good cross-flow to face and wash away; And the present invention adopts internal recycle design efficiently, makes the gas-liquid mixed stream drive mud mixed liquid that ejects through ejector flow at the reactor internal recycle, quickens mass transfer.Therefore the present invention not only effectively controlling diaphragm pollute and improve coefficient of oxygen utilization, but also can improve biochemical reaction rate, make the MBR operation more stable, more efficient.
Summary of the invention
The object of the present invention is to provide a kind of method of MBR jet mixed aeration, this method adopts built-in ejector, jet by mud mixed liquid in the reactor acts on and introducing air entrainmenting of air, mass exchange and momentum exchange by turbulent fluctuation mixed solution stream are blended in the water air, the gas-liquid mixed stream that the diffusion air distribution plate forms can effectively carry out oxygenation to mud mixed liquid, and drives it and flow at the reactor internal recycle.In addition, the present invention adopts the internal recycle design, utilizes the turbulence that internal recycle flows and ejector brings of mud mixed liquid, forms bigger shearing force on the film surface, and controlling diaphragm pollutes effectively; And can improve mass transfer and oxygen transfer rate, promote contaminant degradation.
Another object of the present invention is to provide a kind of device of implementing jet MBR mixed aeration, this device adopts the external placed type water circulating pump that the part mud mixed liquid is introduced in the built-in ejector, and the gas-liquid mixed of suction air formation simultaneously stream enters in the bio-reactor of MBR by the diffusion air distribution plate.Have aperture on the diffusion air distribution plate of this device, make its gas-liquid mixed that ejects stream form the high speed cross-flow on the film surface, and can interior reasonable water distribution and the gas distribution of realization response device.Owing to the design of traverse baffle, make gas-liquid mixed stream drive mud mixed liquid in reactor, form internal recycle and flow simultaneously.This device can delay film and pollute, improves coefficient of oxygen utilization, cuts down the consumption of energy, alleviates noise, and then can make MBR easy and simple to handle, stable.
Technical scheme of the present invention is as follows:
Jet MBR device, contain intake pump, bio-reactor, be arranged on membrane module in the bio-reactor, be connected with membrane module go out water pump, traverse baffle, ejector, diffusion air distribution plate, water circulating pump, blast main, it is characterized in that: traverse baffle is set in the reactor, and mud mixed liquid is imported coupled ejector by water circulating pump, simultaneously by airline suction outside air; The gas-liquid mixed that ejector the forms diffusion air distribution plate of flowing through is injected on the membrane module, and because the setting of traverse baffle makes mud mixed liquid form circulation in reactor; Have aperture on the diffusion air distribution plate.
The present invention also provides a kind of method that adopts jet MBR device, and this method comprises the following steps:
(1) pending former water is risen in the bio-reactor by intake pump, and membrane module is through going out water pump suction water outlet;
(2) ON cycle water pump, part mud mixed liquid enters pipeline after pressurizeing by water circulating pump, the high velocity flow that the nozzle of process ejector forms entrainments ambient air, by blending and cutting action portion of air is added in the water, formation gas-liquid mixed stream, spouting by the diffusion air distribution plate, mud mixed liquid is carried out oxygenation and membrane module is washed away;
(3) mud mixed liquid that drives in the reactor of the gas-liquid mixed stream that ejects of diffusion air distribution plate flows around traverse baffle, forms circulation in reactor.
The present invention compares with original technology and has the following advantages and the high-lighting effect: the external water circulating pump of the present invention, easy access and can enhanced reactor in the circulation of mud mixed liquid; Built-in ejector energy consumption is low, the saving floor space; The diffusion air distribution plate can effectively be injected into gas and liquid mixture in the reactor, and distribute water and air is even, produces good cross-flow velocity, can realize simultaneously that film pollutes control and improves coefficient of oxygen utilization; In jet-flow aeration,, help the MBR inner transmission matter, quicken biochemical reaction, improve processing efficiency because the existence of traverse baffle can realize the circulation of bio-reactor inner fluid.Schedule of operation of the present invention is easy, and apparatus structure is simple, floor space is little, stable, is convenient to automated operation and control.
Description of drawings
Fig. 1 is the front cross-sectional view of device of the present invention.
Fig. 2 is that mud mixed liquid circulates synoptic diagram in the device of the present invention.
Among the figure: the former water of 1-, the 2-intake pump, the 3-bio-reactor, the 4-traverse baffle, the 5-membrane module, 6-goes out water pump, the 7-water outlet, the 8-water circulating pump, the 9-ejector, 10-spreads air distribution plate, 11-blast main, 12-gate valve.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention, structure and working process are further described.
As shown in the figure, mud mixed liquid in the part aeration tank is done to enter in the ejector 9 through water circulating pump 8, by the entrainmenting of ejector 9, blending and cutting action, outside air injection air is sucked and is dissolved in the water, another part then exists with the form of bubble.When this a part of gas and liquid mixture enters in the reactor 3 by diffusion air distribution plate 10, form high speed gas-liquid mixed stream membrane module 5 is washed away, the mud mixed liquid that gas-liquid mixed stream drives in the reactor circulates around traverse baffle 4.
Below enumerate several embodiment again and be used for illustrating effect of the present invention, but claim scope of the present invention is not limited only to this.
Embodiment 1: sanitary sewage disposal lab scale, treatment capacity are 10L/d, former water COD
CrBe 400～500mg/L, SS is 100～200mg/L.After jet MBR handles, water outlet COD
CrLess than 50mg/L, SS is less than 5mg/L, and energy consumption is 0.6kWh/m
3MBR operation one month, transmembrane pressure (TMP) rises to 10kPa by 8kPa, and the mould difference rises steadily.
Embodiment 2: tobacco wastewater is handled lab scale, and treatment capacity is 10L/d, former water COD
CrBe 450～1200mg/L, SS is 100～450mg/L.After jet MBR handles, water outlet COD
CrLess than 50mg/L, SS is less than 5mg/L, and energy consumption is 0.7kWh/m
3MBR operation one month is crossed mould poor (TMP) and is risen to 10.6kPa by 8kPa, and the mould difference rises steadily, and is stable.
Claims (3)
1. jet film bioreactor device comprises:
A water circulating pump is used to produce high pressure water, places the reactor outside, an end ligation device, and the other end connects ejector by gate valve;
An ejector is used for the injection air and with its part blending, cutting and dissolving, an end connects water circulating pump by gate valve, and the other end connects diffuser tube by aerating pipelines;
A blast main is used for outside air is introduced ejector, and an end connects ejector, and the other end directly communicates with outside air;
A gate valve is used to regulate the circular flow of mud mixed liquid, and an end connects water circulating pump, and the other end connects ejector;
A diffusion air distribution plate has aperture above, is used for the distribution and the injection of gas-liquid mixed stream, connects ejector by aerating pipelines;
A traverse baffle is used for forming circulation in reactor, is vertically installed in the reactor, leaves water stream channel up and down.
2. the jet-flow aeration method of a film-bioreactor, this method comprises the following steps:
(1) pending former water is risen in the bio-reactor by intake pump, and membrane module is through going out water pump suction water outlet;
(2) open water pump, part mud mixed liquid enters pipeline after pressurizeing by water pump, the high velocity flow that the nozzle of process ejector forms entrainments ambient air, by blending and cutting action portion of air is added in the water, formation gas-liquid mixed stream, spouting by the diffusion air distribution plate, mud mixed liquid is carried out oxygenation and membrane module is washed away;
(3) mud mixed liquid that drives in the reactor of the gas-liquid mixed stream that ejects of diffusion air distribution plate flows around traverse baffle, forms circulation in reactor.
3. device according to claim 1 is characterized in that ejector is built in bio-reactor, and water circulating pump is placed on bio-reactor, and the diffusion air distribution plate is built in bio-reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101463091A CN100544808C (en) | 2007-09-04 | 2007-09-04 | A kind of method and apparatus of shooting flow film-bioreactor |
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| CNB2007101463091A CN100544808C (en) | 2007-09-04 | 2007-09-04 | A kind of method and apparatus of shooting flow film-bioreactor |
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| CN101139135A true CN101139135A (en) | 2008-03-12 |
| CN100544808C CN100544808C (en) | 2009-09-30 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293705B (en) * | 2008-06-18 | 2011-01-05 | 北京清大国华环保科技有限公司 | Method and apparatus of impulse fluid jet type membrane bioreactor |
| CN101962249A (en) * | 2010-08-20 | 2011-02-02 | 北京清大国华环保科技有限公司 | Method and device for processing high-concentration undegradable waste water by using jet flow membrane bioreactor (MBR) |
| CN101284698B (en) * | 2008-05-30 | 2011-12-28 | 北京清大国华环保科技有限公司 | Method and device of jet airlift recirculated membrane bioreactor |
| CN101525205B (en) * | 2009-04-28 | 2012-07-04 | 北京清大国华环保科技有限公司 | Pressure type membrane bioreactor technique of suspension bed and device |
| CN103818997A (en) * | 2013-12-31 | 2014-05-28 | 北京清大国华环保科技有限公司 | Method and device of composite aeration MBR (membrane bio-reactor) |
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| CN106946347A (en) * | 2017-05-03 | 2017-07-14 | 上海世浦泰膜科技有限公司 | A kind of external MBR reactors agitating device of reflux formula and its method of work |
| CN110183030A (en) * | 2019-03-27 | 2019-08-30 | 广东技术师范学院天河学院 | A kind of method of MBR biomembrane backwash decontamination |
| CN110642372A (en) * | 2019-09-29 | 2020-01-03 | 北交源生态环境科技(北京)有限公司 | Intermittent aeration method for MBBR aeration |
| CN114772856A (en) * | 2022-04-27 | 2022-07-22 | 深圳世纪盛源环境科技有限公司 | Sewage treatment system and sewage treatment method using membrane bioreactor |
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- 2007-09-04 CN CNB2007101463091A patent/CN100544808C/en active Active
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| CN101284698B (en) * | 2008-05-30 | 2011-12-28 | 北京清大国华环保科技有限公司 | Method and device of jet airlift recirculated membrane bioreactor |
| CN101293705B (en) * | 2008-06-18 | 2011-01-05 | 北京清大国华环保科技有限公司 | Method and apparatus of impulse fluid jet type membrane bioreactor |
| CN101525205B (en) * | 2009-04-28 | 2012-07-04 | 北京清大国华环保科技有限公司 | Pressure type membrane bioreactor technique of suspension bed and device |
| CN101962249A (en) * | 2010-08-20 | 2011-02-02 | 北京清大国华环保科技有限公司 | Method and device for processing high-concentration undegradable waste water by using jet flow membrane bioreactor (MBR) |
| CN105339312B (en) * | 2013-07-17 | 2019-09-24 | 三菱重工工程株式会社 | Water treatment facilities |
| CN105339312A (en) * | 2013-07-17 | 2016-02-17 | 三菱重工业株式会社 | Water treatment device |
| US10138147B2 (en) | 2013-07-17 | 2018-11-27 | Mitsubishi Heavy Industries Engineering, Ltd. | Water treatment device |
| CN103818997A (en) * | 2013-12-31 | 2014-05-28 | 北京清大国华环保科技有限公司 | Method and device of composite aeration MBR (membrane bio-reactor) |
| CN106946347A (en) * | 2017-05-03 | 2017-07-14 | 上海世浦泰膜科技有限公司 | A kind of external MBR reactors agitating device of reflux formula and its method of work |
| CN106946347B (en) * | 2017-05-03 | 2022-09-23 | 上海世浦泰膜科技有限公司 | Reverse-flow type external MBR (membrane bioreactor) stirring device and working method thereof |
| CN110183030A (en) * | 2019-03-27 | 2019-08-30 | 广东技术师范学院天河学院 | A kind of method of MBR biomembrane backwash decontamination |
| CN110642372A (en) * | 2019-09-29 | 2020-01-03 | 北交源生态环境科技(北京)有限公司 | Intermittent aeration method for MBBR aeration |
| CN114772856A (en) * | 2022-04-27 | 2022-07-22 | 深圳世纪盛源环境科技有限公司 | Sewage treatment system and sewage treatment method using membrane bioreactor |
| CN114890538A (en) * | 2022-04-28 | 2022-08-12 | 华东理工大学 | Tower type flat plate membrane bioreactor, sewage treatment system and method |
| CN114890538B (en) * | 2022-04-28 | 2023-09-19 | 华东理工大学 | Tower type flat membrane bioreactor, sewage treatment system and method |
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| CN100544808C (en) | 2009-09-30 |
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Denomination of invention: Shooting flow film-bioreactor method and device Effective date of registration: 20130327 Granted publication date: 20090930 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Qingda Guohua Environmental Protection Technology Co., Ltd. Registration number: 2013990000174 |
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Date of cancellation: 20150422 Granted publication date: 20090930 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Qingda Guohua Environmental Protection Technology Co., Ltd. Registration number: 2013990000174 |
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Address after: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404 Patentee after: BEIJING GO HIGHER ENVIRONMENT CO., LTD. Address before: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404 Patentee before: Beijing Qingda Guohua Environmental Protection Technology Co., Ltd. |
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Address after: 100085 C404, Building C, Jiahua Building, 9 Shangdi Third Street, Haidian District, Beijing Patentee after: Tsingdahua Environment Group Co., Ltd. Address before: 100085 C404, Building C, Jiahua Building, 9 Shangdi Third Street, Haidian District, Beijing Patentee before: BEIJING GO HIGHER ENVIRONMENT CO., LTD. |
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