关键词: 亚硝酸盐, 好氧反硝化细菌, 除氮, 机理, 途径

Abstract: The types and characteristics of aerobic denitrifiers are reviewed, and the mechanism and pathways in the nitrite removal process presented. The removing ways of nitrite with aerobic denitrifiers, including assimilation, enzymatic degradation, acid degradation and dissimilatory nitrite reduction to ammonium, are analyzed. Nitrite reduction by denitrifier is mainly enzyme-catalytic reaction that includes nitrite reductase, nitric oxide reductase and nitrous oxide reductase, which is a relayed relation in reduction of nitrite. The nitrite reductase is the reaction rate restriction enzyme. In the future, separation and screening of high efficient type of nitrite denitrifier, optimization of the enzymatic reaction technology and deep analysis of the influential factors of biological denitrification should be emphasized for improving the denitrification efficiency of denitrifiers in practical applications.

Key words: nitrite, aerobic denitrifier, nitrogen removal, mechanism, pathway