CN103818997B - A kind of composite aeration MBR method and apparatus - Google Patents
A kind of composite aeration MBR method and apparatus Download PDFInfo
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- CN103818997B CN103818997B CN201310744586.8A CN201310744586A CN103818997B CN 103818997 B CN103818997 B CN 103818997B CN 201310744586 A CN201310744586 A CN 201310744586A CN 103818997 B CN103818997 B CN 103818997B
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- aeration
- mbr
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- membrane cisterna
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Separation Using Semi-Permeable Membranes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present invention proposes a kind of composite aeration MBR method and apparatus, solves that existing MBR system aeration effect is poor, and oxygen transport is low, the problems such as aeration energy consumption is big.The device includes：Membrane cisterna, for carrying out MBR reactions；Membrane module, for retaining sludge, filter sewage；Intake pump, for providing water inlet；Micropore aeration pipe, for providing micro-pore aeration；Air blower, for providing gas for the micropore aeration pipe；Jet aerator, for providing jet-flow aeration；Water circulating pump, liquid phase is provided for the periodical feeding of the membrane cisterna, and for the jet aerator；Go out water pump, for the water outlet after suction filtration, be connected with the membrane module.The present apparatus and method are simple in construction, set reasonable, can form rational gas-water ratio, improve the transmission efficiency of oxygen；Wash away film surface and effectively prevent concentration polarization phenomenon, reduce fouling membrane, extend membrane lifetime；Save energy consumption.Suitable for big-and-middle-sized industrial wastewater and highly difficult, used water difficult to degradate processing.
Description
Technical field
The present invention relates to water treatment field, a kind of composite aeration MBR method and apparatus is particularly related to.
Background technology
Membrane bioreactor（Membrane Bio-Reactor, MBR）Be one kind by film separation unit and biological treatment list
The Waste Water Treatment that member is combined, with membrane module substitution traditional biological treatment technology end second pond, in bioreactor
High activity sludge concentration is kept, biological treatment organic loading is improved.It is good with treatment effeciency height, effluent quality；Facility compact, account for
Ground area is small；The advantages of easily realization is automatically controlled, operational management is simple.It can be widely applied to sanitary sewage and various industrial sewage
Processing.
MBR aeration form not only directly affects water body oxygenation, influences the treatment effeciency of MBR techniques, and to energy consumption and
Fouling membrane tool has a certain impact, and is a key technology of MBR system, is one of wide variety of key factors of MBR.It is high
Effect, rational aerating system are the key factors for controlling MBR stable operations.Existing MBR system is used mostly according to design manual
U-shaped or fish bone well aeration tube, is aerated by external air blower to system.Blast aeration has greater energy consumption, and at this
Plant under aeration form, the bubble produced by aeration tube is larger, and bubble specific surface area is small, and the quantity for the oxygen being dissolved into water is few,
The utilization rate of oxygen is extremely low.
Micro-pore aeration uniform air distribution, oxygen transfer efficiency is high, easy for installation, simple to operate, Chinese workers' medicine, printing and dyeing, food,
It is used widely in many fields such as papermaking.But, because the membrane cisterna volume in engineering project is larger, alone micro-pore aeration can not
The effect being oxygenated to whole membrane cisterna is reached, causes oxygenation capacity small, the problems such as gas-water ratio is improper.
Air-flow or gas-liquid mixing conductance are entered the device that equipment reaches aeration and stirring action by jet aerator.Jet exposes
Gas is to spray high-velocity flow by jet aerator, the air wherein carried is sufficiently mixed with water, reaches what is be oxygenated into water
Effect.Using the turbulent motion and shear action of jet, cutting gas produces micro-bubble, produces higher oxygen transfer rate.
Have the advantages that it is simple to operate, be not easily blocked, for ease of maintenaince, oxygenation capacity it is high compared with strong, coefficient of oxygen utilization.In addition, jet-flow aeration
Flow rate of water flow is high, and the bubble carried secretly in current is moved quickly through from film surface, and film surface is washed away by Hydraulic Circulation, takes away film table
The sludge deposited on face, effectively prevents fouling membrane.Jet-flow aeration is increasingly extensive in the application of sewage treatment area.
Micro-pore aeration is combined conjunction with jet-flow aeration and is applied to flat board MBR system, and there is provided reasonable for progress rationally design
Aeration quantity reaches for the growth and breeding of microorganism and washes away film surface to reduce effect of fouling membrane.
The content of the invention
The present invention proposes a kind of composite aeration MBR method and apparatus, and it is poor to solve existing MBR system aeration effect, oxygen
Transport is low, the problems such as aeration energy consumption is big.
The technical proposal of the invention is realized in this way：
A kind of composite aeration MBR devices, including：
Membrane cisterna（1）, for carrying out MBR reactions；
Membrane module（2）, for retaining sludge, filter sewage, it is positioned over the membrane cisterna（1）Inner bottom part；
Intake pump（3）, for providing water inlet, with the membrane cisterna（1）It is connected；
Micropore aeration pipe（4）, for providing micro-pore aeration, it is arranged at the membrane cisterna（1）Inner bottom part and the membrane module（2）
Between gap；
Air blower（5）, for for the micropore aeration pipe（4）Gas is provided, with the micropore aeration pipe（4）It is connected；
Jet aerator（6）, for providing jet-flow aeration, it is arranged at the membrane cisterna（1）Inner bottom part；
Water circulating pump（7）, for the membrane cisterna（1）Periodical feeding, and for the jet aerator（6）Liquid is provided
Phase, with the jet aerator（6）With the membrane cisterna（1）It is connected；
Jet-flow aeration air inlet pipe（8）, for for jet aerator（6）Air inlet is provided, the jet aerator is arranged at（6）
On；
Go out water pump（9）, for the water outlet after suction filtration, with the membrane module（2）It is connected.
Preferably, the micropore aeration pipe is oval hollow pipe.
Preferably, the micropore aeration pipe is provided with multiple solarization air caps, and the solarization air cap is trapezoidal hole.
Preferably, the trapezoidal hole inner wall hole footpath is more than outer wall aperture.
Preferably, at least 1 set of the jet aerator.
Preferably, the jet aerator air inlet pipe sets magnetic valve, and control magnetic valve, which is opened and closed, realizes that jet exposes
Gas device pulsed operation.
Preferably, described MBR includes hollow fiber form MBR, plate and frame MBR, spiral wound MBR, circular pipe type MBR, hair
The various forms such as thin-tube type MBR MBR.
A kind of processing method of composite aeration MBR devices, concrete operation step is as follows：
Under MBR system normal operation, air blower blasts gas into micropore aeration pipe, forms micro-bubble, is
Membrane module is aerated, and washes away Flat Membrane surface；Water body in membrane cisterna is pumped into jet aerator by water circulating pump, and gas-liquid two-phase is being penetrated
Membrane cisterna is injected after being sufficiently mixed in stream aerator, is whole membrane cisterna oxygen supply.
The present invention proposes a kind of having the beneficial effect that for composite aeration MBR method and apparatus：
1. a kind of composite aeration MBR devices proposed by the present invention, simple in construction, set reasonable, operating procedure is simple, side
Just, have a wide range of application, it is adaptable to big-and-middle-sized industrial wastewater and highly difficult, used water difficult to degradate processing.
2. a kind of composite aeration MBR processing methods proposed by the present invention, hole drilling type micropore aeration pipe and general micro-pore aeration
Pipe is uniform compared to aeration, and oxygen-transfer efficiency is high, and service area is big, and the micro-bubble of generation improves the contact area of gas-liquid two-phase,
Gas-liquid contact face is constantly updated, more reasonably gas-water ratio is formed, improves the transmission efficiency of oxygen；Simultaneously, it is possible to achieve to film
The effect of surface erosion.
3. a kind of composite aeration MBR processing methods proposed by the present invention, jet-flow aeration is whole membrane cisterna oxygen supply, solve
The problem of aeration dead angle occurs in membrane cisterna, whole membrane cisterna will not form anoxic zones, and biochemical effects are good；The high-velocity flow of jet-flow aeration
The stirring action to membrane cisterna is played, accelerates biochemical reaction efficiency；Jet-flow aeration increases the disturbance of film surface water body, prevents concentration polarization
Change the generation of phenomenon, so that the problem of effectively solving fouling membrane, extends membrane lifetime.
4. a kind of composite aeration MBR processing methods that invention is proposed, jet-flow aeration uses the aeration form of pulse, every
The air inlet of the solenoid valve control jet aerator in jet aerator air inlet pipe, this jet aerator is penetrated when magnetic valve is opened
Stream aeration is used, and this jet aerator does Hydraulic Circulation use during closed electromagnetic valve.Preferably situation is：Jet aerator is divided into five
Group, wherein four groups do jet-flow aeration with while another set do Hydraulic Circulation use, five groups of alternate runs formation jet-flow aerations
Pulse.On the one hand the pulsed operation form of jet aerator can keep the dissolved oxygen of membrane cisterna to be fluctuated in less scope, separately
On the one hand be conducive to the growth of activated sludge in membrane cisterna, promote the formation of flco, make it avoid under jet disturbing type disperseing always
And reduce activity.
5. aeration quantity needed for flat board MBR system is larger, aeration energy consumption is the main energy consumption of flat board MBR system.The present invention is carried
A kind of composite aeration MBR processing methods gone out, the transmission efficiency of oxygen is high, therefore in the case of identical oxygen demand, required aeration
Amount is small, greatlys save flat board MBR system energy consumption, while saving the quantity of aerator, has both saved cost of investment, has also saved
Operating cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of schematic diagram of composite aeration MBR devices proposed by the present invention；
Fig. 2 is micropore aeration pipe schematic diagram in a kind of composite aeration MBR devices proposed by the present invention；
In figure：
1. membrane cisterna；2. membrane module；3. intake pump；4. micropore aeration pipe；5. air blower；6. jet aerator；
7. water circulating pump；8. jet aerator air inlet pipe；9. go out water pump.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1：The present invention proposes a kind of composite aeration MBR method and apparatus, solves existing MBR system aeration
Effect is poor, and oxygen transport is low, the problems such as aeration energy consumption is big.
The technical proposal of the invention is realized in this way：
A kind of composite aeration MBR devices, including：
Membrane cisterna（1）, for carrying out MBR reactions；
Membrane module（2）, for retaining sludge, filter sewage, it is positioned over the membrane cisterna（1）Inner bottom part；
Intake pump（3）, for providing water inlet, with the membrane cisterna（1）It is connected；
Micropore aeration pipe（4）, for providing micro-pore aeration, it is arranged at the membrane cisterna（1）Inner bottom part and the membrane module（2）
Between gap；
Air blower（5）, for for the micropore aeration pipe（4）Gas is provided, with the micropore aeration pipe（4）It is connected；
Jet aerator（6）, for providing jet-flow aeration, it is arranged at the membrane cisterna（1）Inner bottom part；
Water circulating pump（7）, for the membrane cisterna（1）Periodical feeding, and for the jet aerator（6）Liquid is provided
Phase, with the jet aerator（6）With the membrane cisterna（1）It is connected；
Jet-flow aeration air inlet pipe（8）, for for jet aerator（6）Air inlet is provided, the jet aerator is arranged at（6）
On；
Go out water pump（9）, for the water outlet after suction filtration, with the membrane module（2）It is connected.
A kind of processing method of composite aeration MBR devices, concrete operation step is as follows：
Under MBR system normal operation, air blower blasts gas into micropore aeration pipe, forms micro-bubble, is
Membrane module is aerated, and washes away Flat Membrane surface；Water body in membrane cisterna is pumped into jet aerator by water circulating pump, and gas-liquid two-phase is being penetrated
Membrane cisterna is injected after being sufficiently mixed in stream aerator, is whole membrane cisterna oxygen supply.
As shown in Fig. 2 wherein it is preferred to, the micropore aeration pipe is oval hollow pipe.
Preferably, the micropore aeration pipe is provided with multiple solarization air caps, and the solarization air cap is trapezoidal hole.
Preferably, the trapezoidal hole inner wall hole footpath is more than outer wall aperture.
Preferably, at least 1 set of the jet aerator.
Preferably, the jet aerator air inlet pipe sets magnetic valve, and control magnetic valve, which is opened and closed, realizes that jet exposes
Gas device pulsed operation.
Preferably, described MBR includes hollow fiber form MBR, plate and frame MBR, spiral wound MBR, circular pipe type MBR, hair
The various forms such as thin-tube type MBR MBR.
Several examples are exemplified below to illustrate the effect of the present invention, but protection scope of the present invention is not limited only to this.
Embodiment 1
Certain sanitary sewage, raw water CODCrFor 400mg/L ~ 500mg/L, after being handled through flat board MBR, CODCrIt is reduced to 20 mg/L
~ 50mg/L, reaches discharge standard.
The membrane flux of flat board MBR films is 20 ~ 23L/m2Dissolved oxygen content is 2.5 ~ 3.5 mg/L in h, flat board MBR membrane cisternas,
Gas-water ratio is 15:1~17:1, the Flat Membrane average cleaning frequency is the ton water consumption 0.79KW/h more than 6 months.
Embodiment 2
Certain industrial wastewater, raw water CODCrFor 500mg/L ~ 800mg/L, after being handled through flat board MBR, CODCr<50 mg/L,
Reach discharge standard.
The membrane flux of flat board MBR films is 16 ~ 20L/m2Dissolved oxygen content is 3.5 ~ 4mg/L, air water in h, flat board MBR membrane cisternas
Than for 18:1~20:1, the Flat Membrane average cleaning frequency is the ton water consumption 0.82KW/h more than 4 months.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (7)
1. a kind of composite aeration MBR devices, it is characterised in that including：
Membrane cisterna (1), for carrying out MBR reactions；
Membrane module (2), for retaining sludge, filter sewage, is positioned over the membrane cisterna (1) inner bottom part；
Intake pump (3), for providing water inlet, is connected with the membrane cisterna (1)；
Micropore aeration pipe (4), for providing micro-pore aeration, is arranged between the membrane cisterna (1) inner bottom part and the membrane module (2)
Gap；
Air blower (5), for providing gas for the micropore aeration pipe (4), is connected with the micropore aeration pipe (4)；
Jet aerator (6), for providing jet-flow aeration, jet aerator (6) air inlet pipeline installs magnetic valve, control electricity
Magnet valve opens and closes and realizes jet aerator pulsed operation, is arranged at the membrane cisterna (1) inner bottom part；
Water circulating pump (7), liquid phase is provided for the periodical feeding of the membrane cisterna (1), and for the jet aerator (6), with
The jet aerator (6) is connected with the membrane cisterna (1)；
Jet-flow aeration air inlet pipe (8), for providing air inlet for jet aerator (6), is arranged on the jet aerator (6)；
Go out water pump (9), for the water outlet after suction filtration, be connected with the membrane module (2).
2. a kind of composite aeration MBR devices according to claim 1, it is characterised in that the micropore aeration pipe is ellipse
Shape hollow pipe.
3. a kind of composite aeration MBR devices according to claim 2, it is characterised in that the micropore aeration pipe is provided with
Multiple solarization air caps.
4. a kind of composite aeration MBR devices according to claim 3, it is characterised in that the solarization air cap is trapezoidal hole,
The trapezoidal hole inner wall hole footpath is more than outer wall aperture.
5. a kind of composite aeration MBR devices according to claim 1, it is characterised in that the jet aerator at least 1
Set.
6. a kind of composite aeration MBR devices according to claim 1, it is characterised in that described MBR includes doughnut
Formula MBR, plate and frame MBR, spiral wound MBR, circular pipe type MBR and capillary type MBR.
7. a kind of processing method of composite aeration MBR devices as claimed in claim 1, it is characterised in that：The composite aeration
The concrete operation step of MBR devices processing waste water is as follows：
Under MBR system normal operation, air blower blasts gas into micropore aeration pipe, forms micro-bubble, is film group
Part is aerated, and washes away Flat Membrane surface；Water body in membrane cisterna is pumped into jet aerator by water circulating pump, and gas-liquid two-phase exposes in jet
Membrane cisterna is injected after being sufficiently mixed in gas device, is whole membrane cisterna oxygen supply.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2964891C (en) | 2014-10-22 | 2021-11-09 | Koch Membrane Systems, Inc. | Membrane filter module with bundle-releasing gasification device |
| CN104671464A (en) * | 2015-02-02 | 2015-06-03 | 石家庄顺瑞节能科技有限公司 | Water jet and micropore aeration integrated device |
| CN104829049A (en) * | 2015-04-21 | 2015-08-12 | 南通大恒环境工程有限公司 | Reusing treatment method for printing and dyeing wastewater |
| USD779631S1 (en) | 2015-08-10 | 2017-02-21 | Koch Membrane Systems, Inc. | Gasification device |
| 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 |
| CN107459132B (en) * | 2017-09-18 | 2023-10-13 | 苏州苏科环保科技有限公司 | Intermittent bubbling type MBR membrane device |
| CN109336250A (en) * | 2018-12-21 | 2019-02-15 | 南京工程学院 | Use the sewage-treatment plant of the integrated film bioreactor of jet-flow aeration |
| 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 |
| CN114560553A (en) * | 2021-12-30 | 2022-05-31 | 扬州博依特环保科技发展有限公司 | Membrane bioreactor using membrane pool backflow as jet aeration power water flow |
| 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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| CN203402953U (en) * | 2013-06-17 | 2014-01-22 | 天津嘉万通科技发展有限公司 | Membrane bioreactor with high sludge adsorption capacity and good biodegradation |
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| JP2003311268A (en) * | 2002-04-22 | 2003-11-05 | Mitsubishi Rayon Co Ltd | Waste water treatment apparatus and waste water treatment method |
| CN100503197C (en) * | 2007-07-12 | 2009-06-24 | 同济大学 | Method for manufacturing polymer microporous aerator filled with mineral filler |
| CN100544808C (en) * | 2007-09-04 | 2009-09-30 | 北京清大国华环保科技有限公司 | A kind of method and apparatus of shooting flow film-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 |
| CN202265456U (en) * | 2011-10-28 | 2012-06-06 | 浙江工商大学 | Aeration disc and aeration device for water pollution regulation of riverways |
| CN102424470B (en) * | 2011-10-28 | 2013-10-30 | 浙江工商大学 | Aeration disc and aeration apparatus for treating river water pollution |
| CN203346149U (en) * | 2013-06-17 | 2013-12-18 | 天津嘉万通科技发展有限公司 | Low-energy-consumption and high-conversion-rate membrane bioreactor |
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| CN203402953U (en) * | 2013-06-17 | 2014-01-22 | 天津嘉万通科技发展有限公司 | Membrane bioreactor with high sludge adsorption capacity and good biodegradation |
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