发明名称 |
Colloidal silica/polyelectrolyte blends for natural water clarification |
摘要 |
<p>This invention relates to the clarification of waters containing turbidity-causing components. This method comprises the addition of an aqueous colloidal silica sol with average particle size 1 to 150 nm and water based polymeric coagulant of mw 2,000 to 2,000,000 to the turbid water. The components may be added independently, or blended together so that addition is simultaneous. The colloidal silica may also be conditioned by passing over a cationic exchange resin prior to addition of coagulant, which may be a cationic polymer. A composition of silica sol and coagulant is also claimed.</p> |
申请公布号 |
EP0952118(A1) |
申请公布日期 |
1999.10.27 |
申请号 |
EP19990111224 |
申请日期 |
1996.09.24 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
SALMEN, KRISTINE S.;CHOO, PEK LEE;PICCO, DAVID A.;KOBAYASHI, MICHIO |
分类号 |
C02F1/52;C02F1/54;C02F1/56;D21H17/29;D21H17/45;D21H17/56;D21H17/68;(IPC1-7):C02F1/52 |
主分类号 |
C02F1/52 |
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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