发明名称 |
METHOD FOR TREATING CYANIDE WASTE LIQUID |
摘要 |
A highly reliable detoxifying method of the cyano matters is provided. The waste-liquor (1), which contains at least one of free cyano matters, a cyano complex and a reducing compound exhibiting volatility in alkaline aqueous solution, is heated under an alkaline condition to a temperature range, which lies within a range of from room temperature to boiling point, and which includes a high temperature range of 80 DEG C or more, followed by holding the temperature (7); oxidation-reduction potential of the waste liquor is measured from the room temperature; and, hypochlorite (2) is intermittently or continuously added to the waste liquor from the room temperature, until the oxidation-reduction of the the hypochlorite is detected. <IMAGE> |
申请公布号 |
EP1452492(A4) |
申请公布日期 |
2006.05.17 |
申请号 |
EP20020778066 |
申请日期 |
2002.11.07 |
申请人 |
NIHON PARKERIZING CO., LTD.;PARKER NETSUSHORI KOGYO K.K. |
发明人 |
KOJIMA, RYUJI;NAKAMURA, HUMIHIDE;YONEYAMA, YOSHIYASU;YASHIRO, KUNIJI;TOTSUKA, TOSHIKO |
分类号 |
C02F1/00;C02F1/02;C02F1/68;C02F1/76 |
主分类号 |
C02F1/00 |
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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