ELECTROCHEMICAL METHOD OF PURIFYING OILY WATER EFFLUENTS AND DEVICE TO THIS END Russian patent published in 2008 - IPC C02F9/06 C02F1/465 

FIELD: chemistry.

SUBSTANCE: proposed method of purifying oily water effluents involves treatment of water in convection streams, formed by hydrogen bubbles, the number of which is equal to the number of cathode elements, subsequent mixing of the treated effluent water with a stream of clean water, saturated with oxygen bubbles, and filtration of the obtained mixture in a granular bed with catalytic properties. Part of the purified water is returned by recirculation for saturation with oxygen bubbles, and gaseous hydrogen and oxygen are taken out separately. The device for electrochemical purification of oily effluents comprises a case with vertical partition walls and connection pipes for inlet of the water to be purified and outlet of purified water, a receiving chamber, floatation chamber with horizontal electrodes, a chamber for collecting pure water, chamber for collecting sludge and a foam-collecting device in form of a series of truncated pyramids. The device also has a catalytic chamber filled with catalyst, connection pipes for letting purified water into the anode chamber, as well as connection pipes for outlet of gaseous hydrogen and oxygen. The floatation chamber is divided by a horizontal membrane into a cathode and anode chamber. The anode is a solid plate and lies at the bottom of the anode chamber. The gauze cathode is made from separate elements which are parallel to the anode.

EFFECT: increased efficiency and safer water purification process.

8 cl, 1 dwg, 1 tbl