General situation studying on new technology of biological nutrient removal is summarized,such as the principle of denitrifying dephosphataion and factors affecting it,such as pH,DO,SRT,MLSS etc.

• 并对反硝化除磷、同时硝化与反硝化、短程硝化反硝化、厌氧氨氧化等生物脱氮除磷新技术的相关工艺及其特点进行了评述。