FIELD: waste water treatment. SUBSTANCE: invention relates to treatment of industrial waste waters containing high-concentration fine organic and mineral admixtures. Exhausted lubricating fluids are acidified with 1.5-2 wt % of phosphoric acid to pH 4-6, agitated, and organic phase is extracted with isoamyl, isopropyl, hexyl, butyl, or another aliphatic alcohol and separated together with extractant after frosting of fluid to temperature from -3 to -4 C and then thawing to 0-5 C. Degree of removing lubricating fluids from waste water is 92-96% so purified water can be repeatedly reused in closed circuit for preparing fresh lubricating fluids. EFFECT: facilitated purification. 2 cl, 1 dwg, 1 tbl
