FIELD: purification of stable dispersed heterogeneous systems. SUBSTANCE: method involves treating of liquid to be purified by coagulant in the ratio of 1:(1-10); effectuating flotation; electric coagulation treatment, settling and filtration, with solution obtained by mixing liquid to be purified with process water in the ratio of 1:(2-30) being used as coagulant. Mixing of liquid with process water is followed by flotation, electrochemical treatment, settling and clarification. EFFECT: wider operational capabilities and increased efficiency of method. 2 cl, 2 dwg
