Study on Removal of Noxious Gases in Denitrification Process

N2O & NOx as kinds of greenhouse gases do great harm to environmental protection causing increasingly serious global warmth especially recent years along with continuous augment of N2O concentration in the atmosphere that the control N2O＆NOX has been a research deadly need to be solved[1]. Research has suggested that biological nitrification and denitrification of wastewater is one of the important sources of N2O. However, there did not exist more efficient ways and strategies to fit the current situation, so some effective methods should be applied to control the N2O emission in order to reduce the second pollution to air while more and more new denitrification technologies are dealing with wastewater with high nitrogen concentration and serious rich nutrition in water[2]. Therefore, this experiment uses SBR reaction based on a ripe anoxic/aerobic nitrification and denitrification activated sludge system with proper conditions, such as pH, temperature to analysis the optimum conditions of the craft（COD/N, DO）, and the emission of gases, aiming to figure out the main factors in denitrification procedure. As a result, both C/N and DO all functions in this course.