Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering College of Environmental and Energy Engineering Beijing University of Technology Beijing 100124 China;
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering College of Environmental and Energy Engineering Beijing University of Technology Beijing 100124 China;
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering College of Environmental and Energy Engineering Beijing University of Technology Beijing 100124 China;
Anoxic zone and biologic aerated filter(A^(2)OBAF)system; domestic wastewater with low carbon-tonitrogen ratio; advanced nitrogen and phosphorus removal; denitrifying phosphorus removal;