CN102786137A - Membrane unit aeration structure - Google Patents
Membrane unit aeration structure Download PDFInfo
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- CN102786137A CN102786137A CN201210313896XA CN201210313896A CN102786137A CN 102786137 A CN102786137 A CN 102786137A CN 201210313896X A CN201210313896X A CN 201210313896XA CN 201210313896 A CN201210313896 A CN 201210313896A CN 102786137 A CN102786137 A CN 102786137A
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- aeration
- holes
- membrane
- film unit
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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)
Abstract
The invention provides a membrane unit aeration structure. Aeration holes are not distributed uniformly. Aeration pipes comprises a main aeration pipe and a branch aeration pipe, middle portions of the main aeration pipe and the branch aeration pipe are communicated perpendicularly, the branch aeration pipe and a membrane module are installed in parallel, a method that holes are arranged on two sides in a cross mode is adopted, the hole diameter ranges between 3mm and 4mm, the holes are obliquely upward to form an angle of 45 degrees, holes are arranged at an interval of 20-60mm, aeration holes of the branch aeration pipe are distributed into two groups, the group interval on two sides of the membrane unit is twice of the hole interval, and the group interval in the middle of the membrane unit is three times of the aeration hole interval. The aeration structure is used in an immersed membrane bioreactor, so that the gas forms uniform airflow, the water flow circulation is the reactor is improved, the gas content is improved, the membrane cleaning effect is enhanced, and the energy consumption of aeration is reduced.
Description
Invention field
The present invention relates to a kind of waste disposal plant parts, relate in particular to a kind of aeration structure, belong to water-treatment technology field.
Background technology
Membrane bioreactor (MBR) is a kind of efficient water technology that bio-reactor and membrane separation technique are combined; Have that effluent quality is good, sludge yield is low, floor space is little, simple to operate, be easy to advantages such as management, possess the incomparable advantage of traditional waste water treatment process.But it is the bottleneck problem of this technology of puzzlement in the medium-term and long-term steady running of water treatment that film pollutes always.
For decelerating membrane pollution, need to consume lot of energy usually and keep higher crossflow velocity, or adopt frequent matting to recover membrane flux.Aeration pollutes control device as a kind of effective film.In submerged membrane bio-reactor (SMBR), forming uniform airflow not only can decelerating membrane pollution but also sufficient dissolved oxygen is provided for mikrobe.Generally adopt gas scouring method to remove film for the submerged membrane bio-reactor and pollute, form gas-liquid disturbance controlling diaphragm pollution formation effectively.Micro-pore aeration and macropore aeration, HS intermittent aeration and low strength continuous aeration, aeration modes such as increase guiding device all can improve the effect that slows down to the film pollution.Aeration mode directly influences aeration efficient and energy consumption; The arranging to evenly arranging of solarization air cap in the prior art improved the water circulation in the reactor drum, but gas distribution is inhomogeneous in the reactor drum; Influence the mass-transfer efficiency of oxygen; And film unit both sides gas holdup is very low, is unfavorable for the cleaning of localized membrane assembly, makes a part of energy consumption waste.
Defective to prior art is improved the solarization air cap arrangement mode, adopts inhomogeneous arrangement mode, and this aeration structure has been improved the gas distribution situation, and velocity distribution is wider in the flow field, has improved the turbulence intensity in interior gas holdup of reactor drum and flow field.
Summary of the invention
The present invention is in order to overcome weak point of the prior art; Cause film to pollute uneven problem to air-flow concentration of local in the submerged membrane bio-reactor, a kind of new aeration structure is provided, promptly whole film unit solarization air cap adopts inhomogeneous arrangement mode; Being used for the submerged membrane bio-reactor makes gas form uniform air flow; Improve gas holdup, the cleaning performance of reinforcing membrane, and the energy consumption of reduction aeration.
The present invention realizes through following technical proposals:
Aerating pipelines is installed in the bottom of film unit framework, and aerating pipelines comprises the aeration person in charge and aeration arm, and aeration is responsible for and is communicated with aeration arm intermediate vertical; The parallel installation of aeration arm with membrane module; Adopt both sides intersection perforate mode, aperture 3～4mm, 45 ° obliquely in hole direction; Pitch of holes 20～60mm, the solarization air cap of aeration arm are divided into two groups and arrange.The group spacing of film unit both sides is 2 times of pitch of holes, and film unit intermediary group spacing is 3 times of solarization air cap spacing.
Differential aeration structure provided by the invention has been improved the uneven situation of gas distribution in the membrane bioreactor, has improved gas holdup in the reactor drum, the cleaning performance of reinforcing membrane, and the energy consumption of reduction aeration.
Description of drawings
Fig. 1 is the aeration structure vertical view that the embodiment of the invention provides.
Fig. 2 is the aeration arm vertical view that the embodiment of the invention provides.
Fig. 3 is the aeration arm front view that the embodiment of the invention provides.
Embodiment
Below in conjunction with shown in the accompanying drawing the present invention being done further explanation.
By Fluid Mechanics Computation (Computational fluid dynamics; Be called for short CFD) simulation uniform aeration mode Field Characteristics; The result shows that low flow velocity zone appears at the bottom in the reactor drum, near reactor drum wall and the peripheral membrane module of film unit, its fluid velocity of in the middle of the film unit and film unit top distributes bigger.It is thus clear that the aeration structure that solarization air cap is evenly arranged makes that the interior gas distribution of reactor drum is inhomogeneous, the mass-transfer efficiency of oxygen is bad.
A kind of film unit aeration structure is the bottom that aerating pipelines is installed in the film unit framework, and aerating pipelines comprises the aeration person in charge (1) and aeration arm (2), and aerating pipelines comprises the aeration person in charge and aeration arm; Aeration is responsible for and is communicated with aeration arm intermediate vertical; The parallel installation with membrane module of aeration arm is adopted both sides intersection perforate (3) mode, aperture 3～4mm; 45 ° obliquely in hole direction, pitch of holes 20～60mm.
Said film unit aeration structure is different with conventional aeration mode, it is characterized in that solarization air cap adopts inhomogeneous arranging, and promptly the solarization air cap of aeration arm is divided into two groups and arranges.The group spacing of film unit both sides is 2 times of pitch of holes, and film unit intermediary group spacing is 3 times of solarization air cap spacing.
The solarization air cap of said film unit aeration structure adopts inhomogeneous arranging; Analog result shows that this aeration structure improved the gas distribution situation; Velocity distribution is wider in the flow field, and the film unit both sides form and circulate, and has improved the turbulence intensity in interior gas holdup of reactor drum and flow field; The cleaning performance of reinforcing membrane, and the energy consumption of reduction aeration.
Said film unit aeration tube can adopt rubber diaphragm pipe, UPVC pipe and stainless steel tube etc., has characteristics such as heat-resisting, anti-ozone, acid and alkali-resistance, chemicalstability are good.
More than describing is to explanation of the present invention, is not that under the situation that does not break away from the principle of the invention, the present invention can make any type of modification to the qualification of invention.
Claims (3)
1. a film unit aeration structure comprises the aeration person in charge and aeration arm, it is characterized in that the aeration person in charge communicates with aeration arm intermediate vertical; The perforate mode of intersecting, aperture 3～4mm, 45 ° obliquely in hole direction are adopted in both sides; Pitch of holes 20～60mm, the solarization air cap of aeration arm are divided into two groups and arrange; The group spacing of film unit both sides is 2 times of pitch of holes, and film unit intermediary group spacing is 3 times of solarization air cap spacing.
2. a kind of film unit aeration structure according to claim 1 is characterized in that solarization air cap adopts inhomogeneous arranging.
3. a kind of film unit aeration structure according to claim 1 also is applicable to the membrane module aeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210313896XA CN102786137A (en) | 2012-08-30 | 2012-08-30 | Membrane unit aeration structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210313896XA CN102786137A (en) | 2012-08-30 | 2012-08-30 | Membrane unit aeration structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102786137A true CN102786137A (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210313896XA Pending CN102786137A (en) | 2012-08-30 | 2012-08-30 | Membrane unit aeration structure |
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| CN (1) | CN102786137A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015020485A1 (en) * | 2013-08-08 | 2015-02-12 | 롯데케미칼 주식회사 | Air diffuser and membrane bio-reactor |
| CN104512961A (en) * | 2013-09-26 | 2015-04-15 | 三菱丽阳株式会社 | Air diffusion apparatus and water treatment apparatus |
| CN106365301A (en) * | 2016-10-25 | 2017-02-01 | 湖北飞歌科技有限公司 | Track ditch aeration sedimentation tank |
| CN108002519A (en) * | 2017-10-30 | 2018-05-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of all standing aerating system |
| CN110104765A (en) * | 2019-06-13 | 2019-08-09 | 江苏锦宇环境工程有限公司 | A kind of film tube type bottom aerator for oxidation ditch |
-
2012
- 2012-08-30 CN CN201210313896XA patent/CN102786137A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015020485A1 (en) * | 2013-08-08 | 2015-02-12 | 롯데케미칼 주식회사 | Air diffuser and membrane bio-reactor |
| CN105452177A (en) * | 2013-08-08 | 2016-03-30 | 乐天化学株式会社 | Air diffuser and membrane bio-reactor |
| JP2016527081A (en) * | 2013-08-08 | 2016-09-08 | ロッテ ケミカル コーポレーション | Air diffuser and separation membrane bioreactor |
| CN104512961A (en) * | 2013-09-26 | 2015-04-15 | 三菱丽阳株式会社 | Air diffusion apparatus and water treatment apparatus |
| CN104512961B (en) * | 2013-09-26 | 2017-03-29 | 三菱丽阳株式会社 | Air diffusion apparatus and water treatment facilities |
| CN106365301A (en) * | 2016-10-25 | 2017-02-01 | 湖北飞歌科技有限公司 | Track ditch aeration sedimentation tank |
| CN108002519A (en) * | 2017-10-30 | 2018-05-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of all standing aerating system |
| CN108002519B (en) * | 2017-10-30 | 2023-11-17 | 上海市政工程设计研究总院（集团）有限公司 | Full-coverage aeration system |
| CN110104765A (en) * | 2019-06-13 | 2019-08-09 | 江苏锦宇环境工程有限公司 | A kind of film tube type bottom aerator for oxidation ditch |
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Application publication date: 20121121 |