Patent ID: 6093307
Filing Date: 2000-07-25
Classification: B01D,C02F

Abstract:
A method for oil-water separation of wastewater containing a surfactant and an oil content that has been emulsified by the action of said surfactant, comprising the steps of:feeding the wastewater into the anode compartment, for electrolysis, of a diaphragm electrolyzer having an anode and a cathode provided in the anode compartment and a cathode compartment, respectively, which are spaced apart by a porous diaphragm and which are supplied with a dc voltage between said anode and said cathode;passing part of the electrolyzed wastewater through the diaphragm so that it enters the cathode compartment;discharging the influent from the cathode compartment;discharging the remainder of said electrolyzed wastewater from the anode compartment;introducing said remainder into a layer packed with an adhering material, where it is brought into contact with the adhering material; andthereafter directing the effluent to an oil-water separation step for accomplishing the intended oil-water separation.