发明名称 |
Process for treating photographic waste water |
摘要 |
A process for treating a photographic waste liquid containing a used processing liquid resulting from a processing step having a bleaching ability or a fixing ability in the processing of a silver halide photographic material which process comprises adding a polymer-complex-forming agent to the waste liquid in an amount in the range of from 0.5 to 4 equivalents to a metal contained in the waste liquid to thereby form a polymer-metal complex and then filtering off the polymer-metal complex with a mono-membrane filter having a pore size of 0.05 to 10 mu m to thereby remove the metal. A device for use in practicing the process is also disclosed.
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申请公布号 |
US5605633(A) |
申请公布日期 |
1997.02.25 |
申请号 |
US19940348806 |
申请日期 |
1994.11.29 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
NAKAMURA, TAKASHI;MATSUO, KOJI;YAMADA, MASAHARU |
分类号 |
G03C5/00;C02F1/62;C02F1/64;C02F1/68;C25C1/20;G03C7/44;G03D3/00;(IPC1-7):C02F1/62;C02F1/56 |
主分类号 |
G03C5/00 |
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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