Based on the separate research on anoxic and anaerobic and aerobic process for biological nitrogen and phosphorus removal of municipal wastewater,a reversed traditional A~2/O(anaerobic/anoxic/oxic) process without inner circumfluence was developed.

• 以缺氧、厌氧及好氧工段单元试验研究为基础,以城市污水为研究对象,将传统A2/O工艺厌氧/缺氧工段倒置,取消内回流,进行生物脱氮除磷的研究。