FIELD: purification of oil tankers ballast waters. SUBSTANCE: oil wastes are fed to flotator simultaneously with an organic flocculant polydimethylallylammonium chloride introduction. Coalescencing is carried out on a filter with a charging framework. Adsorption with a powdered active carbon is conducted upon mixing the suspension by an air introduced in an airlift regime. At the last stage the water is passed through the powdered layer of granulated active carbon. EFFECT: improved quality of purification. 2 cl
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