恒液位SBR工艺处理城市污水的研究

Study on constant liquid-level SBR process in municipal wastewater treatment

采用恒液位SBR工艺对城市污水处理进行实验研究。研究影响恒液位SBR工艺脱氮除磷效果的缺氧-好氧循环、沉淀时间、进水流量等因素。结果表明：在最佳工况下处理城市污水时,COD、TN、TP和NH3-N去除率分别为88.21%-91.04%、68.04%-70.45%、95.26%-96.11%和89.76%-91.17%,说明采用恒液位SBR工艺处理城市污水是可行的。

A constant liquid-level SBR process was tested in municipal wastewater treatment.Factors influencing nitrogen and phosphorus removal,such as the anoxic/aerobic cycle,sedimentation time and influent flow,were studied in the experiment.The removal rates of COD,TN,TP and NH3-N were, respectively,88.21%～91.04%,68.04%～70.45%,95.26%～96.11%,and 89.76%～91.17% under the optimal operating conditions.The results show that a constant liquid-level SBR process can the used to treat municipal wastewater.