SEWAGE PURIFICATION FROM WEIGHTED SUBSTANCES METHOD Russian patent published in 1996 - IPC

FIELD: sewage purification from weighted particles. SUBSTANCE: sewage waters are treated in anode chamber of diaphragm electrocoagulator with anion membrane during feeding in it of alkaline solution with concentration of up to 0.015 - 0.025 and during feeding into anode chamber of mineral acid solution with concentration of up to 0.015 - 0.025 and oxygen-bearing gas. Treatment is exercised in field of loose electroplating pair formed by aluminum anode and graphite cathode closed to each other by outer electrical circuit. EFFECT: improved purification quality. 2 dwg, 5 tbl