FIELD: waste water treatment. SUBSTANCE: invention relates to protein-containing waste waters and can be used to treat sewage from food and fish industry enterprises and possibly reusing isolated products. First, suspended materials are mechanically separated and waste water is then electrically floated at voltage 12 V and current density 200-300 A/sq.m, after which water is finally treated with activated forms of natural sorbents. Method ensures improved purification of waste waters and additional isolation of high- quality protein product that can be as feed additive for fowl, fish, and cattle. Process can be carried out on depot ships and fishing-boats. EFFECT: enhanced treatment efficiency. 1 tbl, 3 ex
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