Wang Dong-Bo, Li Xiao-Ming, Zeng Guang-Ming, Yang Qi, Liao De-Xiang, Liu Jing-Jin
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Huan Jing Ke Xue. 2007 Mar;28(3):534-9.
The performance of simultaneous nitrogen and phosphorus removal with an inner loop sequencing batch reactor were investigated by simulated municipal wastewater. The experimental results showed that COD, NH4(+) -N, and TP can be removed efficiently after four hours aeration, during which dissolved oxygen concentration was at 6 mg/L at the beginning of aerobic phase and pH was in the rang of 7 - 8. The COD and NH4+ -N as well as TP concentration in the effluent were about at 4 - 48 mg x L(1), 0 - 2.0 mg x L(-1), and 0 - 1.4 mg x L(-1) respectively, which indicated the removal rate for each item were about 89.7% +/- 6.5%, 97.4% +/- 3.6%, 95.6% +/- 4.4% when the concentration of influent were about 170 - 260 mg x L(-1), 20 - 30 mg- L(-1), 8 - 20 mg L(-1), respectively. The removal rate of TIN( NH4 -N + NO3(-) -N + NO2(-) -N) was also reached about 70%. It was found during the research process that phosphorus removal can be achieved without anaerobic phase, which was conventionally considered as a key phase for phosphorus removal, and this phenomena can not be explained by traditional theory.
采用模拟城市污水对内循环序批式反应器同时脱氮除磷性能进行了研究。实验结果表明，曝气4小时后，COD、NH4(+) -N和TP可被有效去除，其中好氧阶段开始时溶解氧浓度为6mg/L，pH值在7 - 8范围内。出水的COD、NH4+ -N和TP浓度分别约为4 - 48mg·L(1)、0 - 2.0mg·L(-1)和0 - 1.4mg·L(-1)，这表明当进水浓度分别约为170 - 260mg·L(-1)、20 - 30mg·L(-1)、8 - 20mg·L(-1)时，各项去除率分别约为89.7%±6.5%、97.4%±3.6%、95.6%±4.4%。总无机氮（NH4 -N + NO3(-) -N + NO2(-) -N）的去除率也达到了约70%。研究过程中发现，无需传统上认为是除磷关键阶段的厌氧阶段即可实现磷的去除，这一现象无法用传统理论解释。
