Title:
ULTRA-HYDROPHOBIC COMPOSITE MEMBRANE FOR MEMBRANE AERATED BIOFILM REACTOR PROCESS AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/132899
Kind Code:
A1
Abstract:
The present invention relates to an ultra-hydrophobic composite membrane for a membrane aerated biofilm reactor (MABR) process, the membrane comprising: a porous polyvinylidene fluoride (PVDF) hollow fiber membrane; a non-porous silicone envelope membrane formed on the external surface of the hollow fiber membrane; and a silicone impregnation membrane embedded at a predetermined depth in the inner direction of the hollow fiber membrane from a side in contact with the non-porous silicone envelope membrane. The ultra-hydrophobic composite membrane according to the present invention is free from exfoliation of the silicone envelope membrane, causes no swelling of the silicone envelope membrane even under a high supply pressure, has high oxygen permeability, and has significantly improved durability due to excellent mechanical properties, and thus is commercially usable through the application to the MABR process.
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Inventors:
JANG JAE YOUNG (KR)
PARK JAEBOK (KR)
JANG SANGYEONG (KR)
LEE JUNG WOO (KR)
PARK JAEBOK (KR)
JANG SANGYEONG (KR)
LEE JUNG WOO (KR)
Application Number:
PCT/KR2020/016608
Publication Date:
July 01, 2021
Filing Date:
November 23, 2020
Export Citation:
Assignee:
PUREENBITECH CO LTD (KR)
International Classes:
B01D69/12; B01D67/00; B01D71/34; B01D71/70
Foreign References:
| KR101848817B1 | 2018-04-16 | |||
| JPH0966224A | 1997-03-11 | |||
| CN102000516A | 2011-04-06 | |||
| KR102115434B1 | 2020-05-28 |
Other References:
SETHUNGA G.S.M.D.P., H. ENIS KARAHAN, RONG WANG, TAE-HYUN BAE: "PDMS-coated porous PVDF hollow fiber membranes for efficient recovery of dissolved biomethane from anaerobic effluents", JOURNAL OF MEMBRANE SCIENCE, vol. 584, 7 May 2019 (2019-05-07), pages 333 - 342, XP055823938, DOI: 10.1016/j.memsci.2019.05.016
DE BO INGE, HEYMAN JEROEN, VINCKE JOCHEN, VERSTRAETE WILLY, VAN LANGENHOVE HERMAN: "Dimethyl Sulfide Removal from Synthetic Waste Gas Using a Flat Poly(dimethylsiloxane)-Coated Composite Membrane Bioreactor", ENVIRONMENTAL SCIENCE & TECHNOLOGY, AMERICAN CHEMICAL SOCIETY, US, vol. 37, no. 18, 1 September 2003 (2003-09-01), US, pages 4228 - 4234, XP055823934, ISSN: 0013-936X, DOI: 10.1021/es020168f
DE BO INGE, HEYMAN JEROEN, VINCKE JOCHEN, VERSTRAETE WILLY, VAN LANGENHOVE HERMAN: "Dimethyl Sulfide Removal from Synthetic Waste Gas Using a Flat Poly(dimethylsiloxane)-Coated Composite Membrane Bioreactor", ENVIRONMENTAL SCIENCE & TECHNOLOGY, AMERICAN CHEMICAL SOCIETY, US, vol. 37, no. 18, 1 September 2003 (2003-09-01), US, pages 4228 - 4234, XP055823934, ISSN: 0013-936X, DOI: 10.1021/es020168f
Attorney, Agent or Firm:
CHUNG HYUN PATENT & LAW FIRM (KR)
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