发明名称 |
Method for the disposal of waste water containing iron-cyanide complexes |
摘要 |
The invention provides an improvement in the disposal of a waste water containing iron-cyanide complexes including ferricyanides by the reduction of the ferricyanide ions into ferrocyanide in the presence of a zinc salt to precipitate the ferrocyanide ions in the form of zinc ferrocyanide. The improvement comprises the use of a sulfite, e.g. sodium sulfite, and a thiosulfate, e.g. sodium thiosulfate, in combination as the reducing agent whereby the reduction of the ferricyanide ions is complete within a relatively short time without being affected by the atmospheric oxygen or other factors.
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申请公布号 |
US4530768(A) |
申请公布日期 |
1985.07.23 |
申请号 |
US19840577354 |
申请日期 |
1984.02.06 |
申请人 |
DIRECTOR-GENERAL OF THE AGENCY OF INDUSTRIAL SCIENCE AND TECHNOLOGY |
发明人 |
TANIHARA, KOICHI;TAMAI, KEIKO;YASUDA, SEIJI |
分类号 |
C02F9/00;(IPC1-7):C02F1/70 |
主分类号 |
C02F9/00 |
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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