METHOD AND DEVICE FOR REDUCING NITROGEN COMPOUND IN DRAINAGE INTO NITROGEN GAS

摘要

PROBLEM TO BE SOLVED: To provide a new process of drainage treatment without using biological treatment as a detoxification method for a nitrogen compound present as mixed in drainage. SOLUTION: Drainage 1 containing the nitrogen compound is supplied to an electrolytic cell equipped with a soluble solid metal as an anode 26 and an insoluble solid metal as a cathode 27. A DC voltage is applied between the electrodes 26, 27 and air 12, 13 is supplied from the lower part of the electrolytic cell for bubbling in the liquid so as to send a gaseous mixture containing ammonia gas accompanying with the bubbling air 12, 13 from the electrolytic cell to a reducing catalyst layer 6 to reduce into nitrogen gas. COPYRIGHT: (C)2004,JPO