FIELD: electrochemical purification of sewage water.
SUBSTANCE: sewage water is passed between electrodes of electrolyzer to which air oxygen is additionally fed; difference of potentials exceeding overvoltage of hydrogen and oxygen evolution is formed on electrodes; this difference shall be sufficient for beginning of emission of electrons from cathode (more than 4 V). Auxiliary electrode is additionally mounted in between cathode and anode; its surface does not exceed surface of cathode; air oxygen is fed in the double amount as compared with hydrogen evolving on cathode. Sulfates and/or chlorides are additionally introduced into sewage water, mainly in equimolar ratio at concentration not exceeding concentration of contaminants in sewage water.
EFFECT: enhanced efficiency of removal of organic substances.
2 cl, 7 ex
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