METHOD OF PURIFICATION OF SEWAGE FLUID Russian patent published in 1997 - IPC

FIELD: electrochemical purification of industrial sewage of fat, petroleum products, SPAV, suspended substances and other impurities. SUBSTANCE: sewage passes through an alternating high-frequency current chamber, in which iron electrodes are installed, then it gets into an electrolyzer with aluminium electrodes. Separated and structurally transformed fat-containing elements with a changed density are fed together with water to the agitation chamber with simultaneous ozonization, then a repeated treatment with alternating high-frequency current is accomplished in the chamber with an iron electrode with subsequent settling. EFFECT: facilitated procedure. 4 dwg, 1 tbl