METHOD FOR CONVERTING NITRATE NITROGEN (NO3-N) AND NITRITE NITROGEN (NO2-N) CONTAINED IN WASTEWATER INTO MOLECULAR NITROGEN (N2) BY CATALYTIC AMMONIA OXIDATION

摘要

Purpose: { (nitrate nitrogen and nitrite nitrogen are removed from waste water by liquid phase reactor between NO2 in nitrite ion and ammonium ion? )+(NH4? +) (N2)+(2H2O) during ammoxidation reaction existing for the catalyst under the conditions of. Construction: the method comprising the steps of :(a) one waste water of adjustment is at least pH 9. at room temperature5 ; (b) 1 g/L for adding a kind of catalyst includes at least the ruthenium and titanium dioxide for entering waste water; (c) pass through 150 deg. in the partial pressure of oxygen greater than 1C or the ammonium oxidation of higher catalysis obtain the molecular nitrogen (N2) of gas.