| 发明名称 |
Filtration technique |
| 摘要 |
A method for increasing the filtration rate of a precipitate produced from a photographic effluent includes treating the effluent with hydrogen peroxide and an alkaline earth metal salt to form a precipitate and adding to the precipitate a diatomaceous earth filtering aid and then filtering the precipitate.
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| 申请公布号 |
US5437790(A) |
申请公布日期 |
1995.08.01 |
| 申请号 |
US19940341452 |
申请日期 |
1994.11.16 |
| 申请人 |
EASTMAN KODAK COMPANY |
发明人 |
FYSON, JOHN R.;GLOVER, MARTYN S.;HENSON, DAVID M. |
| 分类号 |
B01D21/00;B01D37/02;B01D37/03;C02F1/52;(IPC1-7):C02F1/72 |
主分类号 |
B01D21/00 |
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