Title:
MBR FLAT FILTER MEMBRANE FOR DOMESTIC SEWAGE TREATMENT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/021952
Kind Code:
A1
Abstract:
Disclosed is a preparation method for an MBR flat filter membrane for domestic sewage treatment. The method comprises the following steps: modification of nanoparticles, preparation of a polyethylene membrane-casting solution, preparation of a polyethylene flat membrane, amino acid modification, and preparation of the MBR flat filter membrane. The chemical stability of the membrane is improved by using the advantages of polyethylene such as high air permeability, high crystallinity, good chemical stability, and corrosion resistance to most acids and alkalis; the modified nanoparticles are used as a main material, such that the prepared membrane has the advantages of antibacterial and hydrophilic properties; a hydrophilic substance amino acid solution is grafted on the surfaces of the nanoparticles, such that on the one hand, the agglomeration phenomenon of the nanoparticles can be reduced, on the other hand, the hydrophilicity of the membrane can be further improved and the water output flux of the membrane can be further increased; the interaction of hydrophilicity is formed between the inside and the surface of the membrane, such that the anti-pollution capability of the membrane is more excellent. The present invention is simple and feasible in process operation, and has stable process parameters, low requirements on a process environment, and low costs.
Inventors:
CHENG YUE (CN)
GONG XILONG (CN)
QIU CHANGQUAN (CN)
ZHUANG ZHI (CN)
YU SHAOBO (CN)
GONG XILONG (CN)
QIU CHANGQUAN (CN)
ZHUANG ZHI (CN)
YU SHAOBO (CN)
Application Number:
PCT/CN2021/088080
Publication Date:
February 03, 2022
Filing Date:
April 19, 2021
Export Citation:
Assignee:
SHANGHAI ENERGY NEW MAT TECH CO LTD (CN)
International Classes:
B01D63/08; B01D67/00; B01D69/06; B01D71/26; C02F3/12
Foreign References:
| CN111804151A | 2020-10-23 | |||
| CN104415668A | 2015-03-18 | |||
| CN105727760A | 2016-07-06 | |||
| CN210544418U | 2020-05-19 | |||
| US20070284303A1 | 2007-12-13 | |||
| CN103464013A | 2013-12-25 | |||
| CN103304833A | 2013-09-18 |
Attorney, Agent or Firm:
SHANGHAI YUANTONG LAW FIRM (CN)
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