CN203139913U - Composite membrane for MABR (Membrane Aerated Biofilm Reactor) - Google Patents
Composite membrane for MABR (Membrane Aerated Biofilm Reactor) Download PDFInfo
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- CN203139913U CN203139913U CN201320069800XU CN201320069800U CN203139913U CN 203139913 U CN203139913 U CN 203139913U CN 201320069800X U CN201320069800X U CN 201320069800XU CN 201320069800 U CN201320069800 U CN 201320069800U CN 203139913 U CN203139913 U CN 203139913U
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- mabr
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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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Abstract
The utility model relates to a composite membrane for an MABR (Membrane Aerated Biofilm Reactor). The composite membrane is composed of a porous membrane and a levodopa composite layer compounded on the surface of the porous membrane, wherein the thickness of the levodopa composite layer is in a range from 10 nanometers to 2 millimeters. The composite membrane for the MABR disclosed by the utility model has the advantages that the composite membrane has higher oxygen permeation performance, better surface hydrophilicity and biocompatibility, and greater membrane surface roughness.
Description
Technical field
The utility model belongs to the film field, especially a kind of MABR composite membrane.
Background technology
Membrane Aeration Biofilm Reactor (MABR) system is a kind of novel sewage disposal technology that grows up in nearly twenty or thirty year.The principle that MABR disposes of sewage is to utilize the aeration membrane module to carry out bubble-free aeration to the microbial film that is grown in the polymeric membrane surface and water body, oxygen and nutrients from the both sides of hollow-fibre membrane, are utilized by microorganism by effects such as concentration difference driving, microorganism absorption respectively in this aeration process.Microorganism makes the pollutant in the water body be decomposed into simple inorganic metabolite when utilizing nutriment, thereby water body is purified.
MABR aeration film mainly plays two aspect effects: adhere to carrier for biofilm development provides on the one hand; On the other hand, MABR is by to film inner chamber aerating oxygen or pressure-air, and making oxygen see through film is the biomembrane oxygen supply that is attached to aeration film surface with still form.The key property of MABR aeration film comprises: high oxygen through performance, good hydrophilicity, good bioaffinity and mechanical performance etc.
The used aeration film of MABR mainly is divided three classes at present, that is: dense film, hydrophobic microporous membrane and composite membrane.Dense film is because the compactness of this body structure has higher bubble point pressure, and its shortcoming is that the gas transfer resistance is bigger, and the gas flux of film is lower.Hydrophobic microporous membrane generally is to be made by hydrophobic polymer materials such as polyethylene, polytetrafluoroethylene (PTFE), Kynoar, polypropylene, polystyrene, and the diameter that distributing on the film surface is about the micropore of 0.01～0.20 μ m.In microporous barrier, because air resistance can be ignored, therefore can obtain bigger gas flux, its low price is processed into doughnut easily simultaneously.The shortcoming of microporous barrier mainly contains: bubble point pressure is low, and cell fragment enters fenestra inside easily and causes gas flux to reduce.Composite membrane is at the very thin densified polymer layer of hydrophobic microporous membrane surface coverage one deck, makes ultra-thin function of cortex composite membrane.The advantage of composite membrane is: improve the hydrophobic microporous membrane bubble point pressure low the time, kept the big advantage of its flux, improved mechanical performance and the surface property of membrane material with the polymeric skin of stylish introducing; Its shortcoming is need to adopt expensive equipment, higher production cost and complicated preparation process etc.Also be not suitable for the composite membrane that MABR uses in the market.
The utility model content
The purpose of this utility model is to provide a kind of MABR composite membrane, has higher oxygen through performance, surface hydrophilicity and bioaffinity and bigger film surface roughness preferably.
The purpose of this utility model is achieved through the following technical solutions:
A kind of MABR composite membrane, composite membrane are to constitute by perforated membrane with at the compound levodopa composite bed of porous film surface.
And the thickness of described levodopa is 10 nanometers to 2 millimeter.
And described perforated membrane comprises tubular film and Flat Membrane.
And described perforated membrane is polymer material film and inorganic material film, and the composite membrane of macromolecular material and inorganic material.
And described perforated membrane is macromolecular material film and polymer compound film, inoranic membrane and inorganic macromolecular composite films such as polyethylene, polytetrafluoroethylene (PTFE), Kynoar, polypropylene, polystyrene, poly-cellulose acetate, polyvinyl acetate fibers element, polyvinyl chloride, polysulfones, poly (ether sulfone) film.
Advantage of the present utility model and good effect are:
1, the utility model advantage of preparing the MABR composite membrane is: composite membrane has higher oxygen through performance, surface hydrophilicity and bioaffinity, bigger film surface roughness preferably.
2, the utility model to the modification of Kynoar (PVDF) perforated membrane after gas flux can be by the 0.26mL/ (S*mm before the modification
2) bring up to 0.58mL/ (S*mm
2); Water contact angle can be reduced to 52 degree by the degree of 86.5 before the modification; The r.m.s. roughness on film surface can be brought up to 111.777nm by 88.030nm originally.
Description of drawings
Fig. 1 is the structural representation of MABR with composite membrane, and wherein 1 is the levodopa layer, and 2 is the duct of perforated membrane, and 3 is perforated membrane.
The specific embodiment
Below in conjunction with embodiment, the utility model is further specified, following embodiment is illustrative, is not determinate, can not limit protection domain of the present utility model with following embodiment.
The utility model provides a kind of MABR with composite membrane and preparation method, surface at perforated membrane evenly is coated with levodopa, form one deck levodopa composite membrane on the film surface, the thickness of levodopa composite membrane is 10 nanometers to 2 millimeter, obtains higher film bubble point pressure, film oxygen permeability, surface hydrophilicity and surface roughness etc.
The employed perforated membrane of the utility model comprises macromolecular material and modification, composite tubulose film (comprising hollow-fibre membrane etc.) and Flat Membrane such as polyethylene, polytetrafluoroethylene (PTFE), Kynoar, polypropylene, polystyrene, poly-cellulose acetate, polyvinyl acetate fibers element, polyvinyl chloride, polysulfones, polyether sulfone.The manageable perforated membrane of the utility model comprises tubular film and Flat Membrane.
The present invention adopts levodopa solution coating to the thickness of film without limits, be coated between the levodopa of porous film surface and form compound cortex by self-polymeric reaction on the film surface, this composite membrane has higher oxygen through performance and good hydrophilicity energy, is suitable for the cultivation of microorganism.
MABR comprises following step with the preparation technology of composite membrane in the utility model:
⑴ the preparation of levodopa solution: it is to be mixed with the levodopa solution that concentration is 0.05～3g/L in 4～11 the aqueous solution that levodopa is dissolved in the pH value, regulates the pH value if desired, and used adjusting acid or alkali do not have specific (special) requirements, is commonly used the getting final product in this area;
⑵ coating: with the even zero defect of levodopa solution be coated on the porous membrane outer surface, temperature is controlled at 5～80 ℃;
⑶ heat treatment: be to heat-treat under 20～100 ℃ the condition in temperature with the composite membrane of cleaning.
Above-mentioned composite membrane is carried out sign and the Mechanics Performance Testing of gas flux, surface hydrophilicity and surface roughness, and used instrument comprises gas flowmeter, contact angle instrument, tunnel SEM (SEM) and AFM (AFM) and electronic universal tester etc.
Measure the utility model to the modification of porous Kynoar (PVDF) film after gas flux can be by the 0.26mL/ (S*mm before the modification
2) bring up to 0.58mL/ (S*mm
2); Water contact angle can be reduced to 52 degree by the degree of 86.5 before the modification; The r.m.s. roughness on film surface can be brought up to 111.777nm by 88.030nm originally.
Concrete preparation method is as follows:
Embodiment 1
A kind of MABR composite membrane, the film that present embodiment provides are to be coated on the composite membrane that PVDF porous hollow fiber membrane surface forms with levodopa solution.
Concrete preparation method is as follows:
⑴ the preparation of levodopa solution: 500 milliliters of the levodopa solution that secure ph is 10, concentration is 0.8g/L are long-pending;
⑵ coating: with its even zero defect be coated on PVDF porous hollow fiber membrane surface;
⑶ heat treatment: 80 ℃ of following heat treatment 10 hours.
After tested, gas flux is by the 0.26mL/ (S*mm before unmodified
2) bring up to 0.34mL/ (S*mm
2), water contact angle is reduced to 76.2 degree by 86.5 original degree.
Embodiment 2
A kind of MABR composite membrane, the film that present embodiment provides are to be coated on the composite membrane that polysulfones porous flat plate film surface forms with levodopa solution.
Concrete preparation method is as follows:
⑴ the preparation of levodopa solution: secure ph is 5.0, concentration is the levodopa solution of 0.1g/L;
⑵ coating: with its even zero defect be coated on the PS membrane surface;
⑶ heat treatment: 30 ℃ of following heat treatment 30 hours.
After tested, gas flux is by the 0.31mL/ (S*mm before unmodified
2) bring up to 0.54mL/ (S*mm
2), water contact angle is reduced to 66.2 degree by 76.5 original degree, and the r.m.s. roughness on film surface is brought up to 111.777nm by 88.030nm originally.
Claims (5)
1. MABR composite membrane, it is characterized in that: composite membrane is to constitute by perforated membrane with at the compound levodopa composite bed of porous film surface.
2. MABR composite membrane according to claim 1 is characterized in that: the thickness of described levodopa is 10 nanometers to 2 millimeter.
3. MABR composite membrane according to claim 1, it is characterized in that: described perforated membrane comprises tubular film and Flat Membrane.
4. MABR composite membrane according to claim 1, it is characterized in that: described perforated membrane is polymer material film and inorganic material film, and the composite membrane of macromolecular material and inorganic material.
5. MABR composite membrane according to claim 1 is characterized in that: described perforated membrane is polyethylene, polytetrafluoroethylene (PTFE), Kynoar, polypropylene, polystyrene, poly-cellulose acetate, polyvinyl acetate fibers element, polyvinyl chloride, polysulfones, poly (ether sulfone) film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320069800XU CN203139913U (en) | 2013-02-06 | 2013-02-06 | Composite membrane for MABR (Membrane Aerated Biofilm Reactor) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320069800XU CN203139913U (en) | 2013-02-06 | 2013-02-06 | Composite membrane for MABR (Membrane Aerated Biofilm Reactor) |
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|---|---|
| CN203139913U true CN203139913U (en) | 2013-08-21 |
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| CN201320069800XU Expired - Lifetime CN203139913U (en) | 2013-02-06 | 2013-02-06 | Composite membrane for MABR (Membrane Aerated Biofilm Reactor) |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182254A (en) * | 2013-02-06 | 2013-07-03 | 天津大学 | Composite film for MABR and preparation method |
| CN110563142A (en) * | 2019-10-16 | 2019-12-13 | 天津海之凰科技有限公司 | MABR sewage treatment tank, MABR sewage treatment system and using method thereof |
| CN111482091A (en) * | 2020-05-18 | 2020-08-04 | 浙江长兴求是膜技术有限公司 | Preparation method of high-performance MABR hollow fiber composite membrane |
| CN112295419A (en) * | 2020-10-20 | 2021-02-02 | 淄博蓝景膜环保科技有限公司 | Preparation method of selective permeability MABR composite membrane |
-
2013
- 2013-02-06 CN CN201320069800XU patent/CN203139913U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182254A (en) * | 2013-02-06 | 2013-07-03 | 天津大学 | Composite film for MABR and preparation method |
| CN103182254B (en) * | 2013-02-06 | 2015-08-12 | 天津大学 | A kind of composite film for MABR and preparation method |
| CN110563142A (en) * | 2019-10-16 | 2019-12-13 | 天津海之凰科技有限公司 | MABR sewage treatment tank, MABR sewage treatment system and using method thereof |
| WO2021073522A1 (en) | 2019-10-16 | 2021-04-22 | 天津海之凰科技有限公司 | Mabr sewage treatment tank, mabr sewage treatment system and method of using same |
| CN111482091A (en) * | 2020-05-18 | 2020-08-04 | 浙江长兴求是膜技术有限公司 | Preparation method of high-performance MABR hollow fiber composite membrane |
| CN112295419A (en) * | 2020-10-20 | 2021-02-02 | 淄博蓝景膜环保科技有限公司 | Preparation method of selective permeability MABR composite membrane |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130821 |
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| CX01 | Expiry of patent term |