METHOD AND DEVICE FOR ELECTROCHEMICALLY REMOVING NITRATE NITROGEN

摘要

PROBLEM TO BE SOLVED: To conduct electrochemical denitrification with high efficiency at low cost though denitrification of waste water is mainly conducted biologically. SOLUTION: The device is provided with an ion-permeable diaphragm and a cathode plate and an anode plate disposed parallel with the diaphragm inbetween in a treatment bath, wherein moldings made of a conductive material are packed between the diaphragm and the cathode plate, and treated water is made to flow among the moldings with DC voltage or pulse voltage applied between the cathode plate and the anode plate, thereby reducing nitrate nitrogen in the treated water into nitrogen gas, and the nitrate nitrogen in the treated water is thus removed.