发明名称 |
Treatment for reverse osmosis membranes. |
摘要 |
<p>A process for increasing the salt passage of polyamide reverse osmosis membranes and the resulting membrane is disclosed. The process involves treating the membrane with a dilute aqueous solution of an alkali metal permanganate followed by a stabilization treatment with a dilute aqueous solution of sodium bisulfite or hydrogen peroxide.</p> |
申请公布号 |
EP0401964(A2) |
申请公布日期 |
1990.12.12 |
申请号 |
EP19900304048 |
申请日期 |
1990.04.12 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
STRANTZ, JOHN WALTER, JR.;BREHM, WARREN JOHN |
分类号 |
B01D67/00;B01D61/02;B01D71/56 |
主分类号 |
B01D67/00 |
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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