发明名称 |
COMPOSITE SEMIPERMEABLE MEMBRANE, METHOD FOR PREPARING THE SAME AND METHOD FOR WATER TREATMENT USING THE SAME |
摘要 |
A composite semipermeable membrance of the present invention comprises a thin film and a porous support membrane supporting the thin film, wherein the thin film includes polyamide based resin having a constituent unit with amide bond between diamine residue and di or tri carboxylic acid residue, in which nitrogen atom of the amide bond has a substituent of aromatic ring. A production method of this invention includes a contacting step of contacting the above composite semipermeable membrane with solution including an oxidizer. In addition, a water treatment method of this invention comprises a step of separating a raw water by a composite semipermeable membrane to obtain permeation water in which salt and/or organic substance is removed sufficiently in practical use, characterized in that the composite semipermeable membrane of this invention is used and a fungicide is added into the raw water. <??>This invention provides a composite semipermeable membrane having practically permeability, and excellent desalting faculty and oxidizer resistance, a production method thereof, and water treatment method using the same. <IMAGE> |
申请公布号 |
EP1382378(A4) |
申请公布日期 |
2006.06.14 |
申请号 |
EP20020702824 |
申请日期 |
2002.03.08 |
申请人 |
NITTO DENKO CORPORATION |
发明人 |
OHARA, TOMOMI;HIROSE, MASAHIKO;KURATA, NAOKI |
分类号 |
B01D61/04;B01D65/02;B01D67/00;B01D69/12;B01D71/56;C02F1/44;(IPC1-7):B01D71/56 |
主分类号 |
B01D61/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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