METHOD OF WASTE WATER TREATMENT Russian patent published in 1998 - IPC

FIELD: waste water treatment. SUBSTANCE: invention relates to cleaning waste waters from emulsified organics stabilized in water phase by surfactant and environmentally dangerous electrolytes. Invention aims at providing mutual cleaning of wastes with emulsified organics and environmentally dangerous electrolytes to develop reagentless environmentally safe technology for treating waste waters. Method is implemented by adding electrolyte followed by separation of aqueous and organic phases. As electrolyte, utilized are exhausted leaching and/or galvanic bath solutions, their wash water, and/or salt solutions, and/or acidic and/or alkaline sewage. Electrolyte solutions are added to emulsified waste waters at organics to metal ratio (500 ÷ 5):1 and electrolyte ions are extracted and/or floated into organic phase. EFFECT: improved environmental condition due to closed-circuit technology. 2 tbl