发明名称 |
Composition and method for simultaneously precipitating metal ions from semiconductor wastewater and enhancing microfilter operation |
摘要 |
The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dithiocarbamate functionalities to the wastewater.
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申请公布号 |
US6258277(B1) |
申请公布日期 |
2001.07.10 |
申请号 |
US20000638475 |
申请日期 |
2000.08.14 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
SALMEN KRISTINE S.;KOWALSKI ANGELA S.;ZEIHER E. H. KELLE;WARD WILLIAM J. |
分类号 |
B01D61/16;B01J45/00;C02F1/42;C02F1/44;C02F1/56;C02F1/62;C02F1/64;C08F8/34;C08F126/04;C08G73/06;(IPC1-7):C02F1/62 |
主分类号 |
B01D61/16 |
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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