Electrochemical treatment of water contaminated with...

C - Chemistry – Metallurgy – 02 – F

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C02F 1/46 (2006.01) C02F 1/00 (2006.01) C02F 1/467 (2006.01) C02F 1/58 (2006.01) C02F 1/461 (2006.01)

Patent

CA 2247135

Waters contaminated by nitrogenous compounds such as nitrate, ammonium, etc., are treated by electrochemical transformation of the contaminant to nitrogen gas. Electrodes are placed in the contaminated water to form a cell, in which the voltage of one of the electrodes is set to the Eh voltage at which nitrogen gas is thermodynamically favoured. The cell may be electrolytic or galvanic.

On traite des eaux contaminées par des composés azotés tels que le nitrate, l'ammonium, etc., par transformation électrochimique du contaminant en azote. On place des électrodes dans l'eau contaminée afin de former une cellule dans laquelle la tension d'une des électrodes est établie à la tension Eh à laquelle l'azote est favorisé thermodynamiquement. La cellule peut être électrolytique ou galvanique.

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