METHOD OF DETOXICATION OF ACID SEWAGE FROM HEXAVALENT CHROME COMPOUNDS Russian patent published in 1995 - IPC

FIELD: sewage treatment. SUBSTANCE: sewage filtration is carried out on material prepared by copper cementation on the glass fiber metallized with aluminium at the filtration volume rate 1-10 column volumes/h, at pH < 2, at mass ratio aluminated fibers to copper (500-1):1. Method ensures to treat water from ions Cr (VI) up to the values of permissible concentrations and can be used for profound treatment of chrome-containing sewers, for example, sewage of galvanic works. EFFECT: improved method of detoxication. 2 cl, 1 tbl