发明名称 |
METHOD OF TREATING WASTE WATERS TO REMOVE NONFERROUS HEAVY METAL IONS |
摘要 |
waste water treatment. SUBSTANCE: method is based on precipitation of nonferrous heavy metals from solutions on naturally occurring calcium carbonates. As a result of formation of basic sulfates in gypsum-carbonate buffer, pH 6.4-6.5, extensiveness of purification is by one order of magnitude higher than in hydrolytic methods. Low solubility of carbonate ensures accurately dosed, with no excess, access of reagent into solution to be treated. EFFECT: enabled long-time use of precipitating agent in the course of continuously conducted treatment. 1 dwg |
申请公布号 |
RU2191750(C2) |
申请公布日期 |
2002.10.27 |
申请号 |
RU20000100665 |
申请日期 |
2000.01.10 |
申请人 |
INSTITUT KHIMII I KHIMICHESKOJ TEKHNOLOGII SO RAN |
发明人 |
ZHIZHAEV A.I.;BRAGIN V.I.;MIKHAJLOV A.G. |
分类号 |
C02F1/62;C02F1/66;C02F103/16 |
主分类号 |
C02F1/62 |
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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