FIELD: purification of industrial flows from petroleum products and surfactants. SUBSTANCE: sewage is subjected to electrocoagulation under vacuum, and water is separated in IR spectrum with specific heating power of 0.1-10.0 kW/cu.m at pressure of 2-70 kPa. EFFECT: higher degree of cleaning and stabilization of composition of purified water. 2 cl, 3 ex, 3 tbl
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