发明名称 |
Removal of heavy metals from waste water |
摘要 |
A heavy metal can be removed from waste water, in which the metal is contained as ions, by adding to the waste water a metal scavenger together with at least one of sodium monosulfide, sodium polysulfides and sodium hydrogensulfide to form a metal ion containing floc. The resulting floc is then removed from the waste water by filtration. The metal scavenger contains at least one carbodithio group and/or at least one carbodithioate salt group as N-substituents per molecule.
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申请公布号 |
US4731187(A) |
申请公布日期 |
1988.03.15 |
申请号 |
US19860887945 |
申请日期 |
1986.07.22 |
申请人 |
MIYOSHI YUSHI KABUSHIKI KAISHA |
发明人 |
MORIYA, MASAFUMI;HOSODA, KAZUO;NISHIMURA, AKIRA;IMACHI, TAKAO |
分类号 |
C01G3/00;C01G5/00;C01G7/00;C01G9/00;C01G11/00;C01G13/00;C01G15/00;C01G21/00;C01G28/00;C01G31/00;C01G37/00;C01G55/00;C02F1/52;C02F1/56;C02F1/62;C22B3/34;(IPC1-7):C02F1/54 |
主分类号 |
C01G3/00 |
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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