发明名称 |
Method for improving the separating action in the ultrafiltration of aqueous solutions |
摘要 |
A method for improving the separating action in the ultrafiltration of aqueous solutions containing high-molecular-weight organic compounds including water-soluble anionic and/or non-ionic surface-active compounds consisting essentially of subjecting an aqueous solution containing high-molecular-weight organic compounds including water-soluble anionic and/or non-ionic surface-active compounds to an ultrafiltration through a porous membrane in the presence of olefinically-unsaturated C16-22 fatty acids or water-soluble salts thereof, in a weight ratio of surface-active compound to fatty acid or salt of from 20:1 to 1:1 and recovering said aqueous solution substantially separated from said high-molecular-weight organic compounds. The retention power for water-soluble tensides can be 0.9 or more with this measure (without the addition, </=0.1 to 0.5). Furthermore oil can be removed to a mineral oil content of 20 mg/l, whereas without the addition of the invention, values of more than 100 mg/l in the permeate are obtained. |
申请公布号 |
US4539117(A) |
申请公布日期 |
1985.09.03 |
申请号 |
US19810288928 |
申请日期 |
1981.07.31 |
申请人 |
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN |
发明人 |
MEYER, DIETER;ROSSMANN, CHRISTIAN;ZETZSCHE, FRIEDBERT |
分类号 |
B01D61/14;B01D61/16;C02F1/44;(IPC1-7):B01D13/00 |
主分类号 |
B01D61/14 |
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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