Method for recovering copper from cyanide-containing waste water and related waste water treatment method |
Title： |
| Method for recovering copper from cyanide-containing waste water and related waste water treatment method |
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Application Number： |
200610169698 |
Application Date： |
2006/12/27 |
Announcement Date： |
2007/08/01 |
Pub. Date： |
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Publication Number： |
101008090 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C25C 1/12, C02F 1/461, C02F 1/62 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Hu Husheng, Yang Mingde, Dang Jie, Zhang Shengzhuo, Wu Yulong |
Key Words： |
cyanide-containing waste water, recover, copper, treatment |
Abstract： |
The invention discloses a method for recovering copper from cyanic waste water and relative wastewater treatment method, belonging to non-ferrous metallurgy and environmental protection field. It is characterized in that it combines diaphragm electrodeposition with part of acidification, adds acid into electrodeposition liquid and aerates to blow off and recover free CN-, which greatly increases cathodic current efficiency; it employs diaphragm electrodeposition, that is to employ cationic exchange membrane to separate free cyanogen and metal- cyano complex from anode, to avoid cyanogen oxidation in anode; the waste electrodeposition liquid can be reused in cyanogen extraction process, or discharged after further treatment. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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