The Study on Nitrogen Removal Mechanism and Affecting Factors of Simultaneous Nitrification and Denitrification

According to the latest research both at home and abroad,the nitrogen removal mechanism of simultaneous nitrification and denitrification is briefly introduced from three aspects including macroenvironment theory,microenvironment theory and microbiology theory.The paper also expounds the affecting factors of simultaneous nitrification and denitrification and gives the research direction of simultaneous nitrification and denitrification finally.