Abstract：Operational performance of A2O-BAF was investigated when treating domestic wastewater with low carbon-to-nitrogen ratio at low temperature. Under the condition of average temperature of 14.2℃ and carbon-to-nitrogen radio of 4.81, enhanced nitrogen and phosphorus removal was achieved. Average effluent total nitrogen and total phosphorus concentrations were 13.21mg/L and 0.23mg/L, respectively. The removal efficiencies of COD, ammonium nitrogen, total nitrogen and total phosphorus were 86.2%, 99.8%, 96.6% and 81.5%, respectively. The effluent quality could satisfy the first level A criteria specified in the discharge standard of pollutants for municipal wastewater treatment plant (GB18918-2002). Although the system was operated under low temperature, good settle ability with SVI of 85.4 mL/g was obtained. Moreover, pH and oxidation reduction potential could be used as control parameters for process control of A2O-BAF system. It was suggested that the operational state could be well known according to the changes of simple online sensors.
王建华, 陈永志, 彭永臻. 低碳氮比实际生活污水A2O-BAF工艺低温脱氮除磷[J]. 中国环境科学, 2010, 30(9): 1195-1200.
WANG Jian-Hua, CHEN Yong-Zhi, PENG Yong-Zhen. Biological nutrients removal from domestic wastewater with low carbon-to-nitrogen ratio in A2O-BAF system at low temperature. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(9): 1195-1200.
