METHOD OF SEWAGE WATER PURIFICATION FROM DYESTUFFS Russian patent published in 2003 - IPC

FIELD: electrochemical methods of sewage water purification, particularly, textile industry sewage water purification, particularly, textile industry sewage water containing dyestuffs. SUBSTANCE: method includes electrolysis of aqueous solution containing dyestuff and saturated with oxygen at pressure of 0.5-0.6 MPa. Process is carried out in autoclave, whose body serves as cathode. Technical result consists in increase of process efficiency due to oxidation of sewage water components non only on anode, but also in volume of solution with hydrogen peroxide and products of its decomposition generated by reduction of oxygen on cathode, simplified process flow diagram. EFFECT: higher efficiency of method. 1 tbl, 3 ex