改良型A2/O工艺处理低碳源城市生活污水

摘要

以某污水处理厂的实际运行情况为例,研究改良型A2/O工艺处理低碳源城市生活污水的效果.运行结果表明,改良型A2/O工艺对化学需氧量(CODcr)、氨氮(NH3-N)和总磷(TP)的去除效果良好,CODcr、NH3-N和TP的平均去除率分别为66.7%、66.5%和70.6%,出水CODcr<40 mg/L,NH3-N<7 mg/L,TP<0.5 mg/L;TN(总氮)平均去除率可达53.4%,出水TN<20 mg/L.出水水质均达到国家城镇污水处理厂污染物排放一级B标准.%Based on practical running data of a wastewater treatment plant,the removal effect of modified A2/O process on treating urban wastewater with low carbon was studied. Results showed that the process was efficient in removing CODcr, N H3-N, and TP, with removal efficiency of CODcr, N H3-N and TP was respectively 66.7％ ,66.5％ and 70.6％ ,Effluent concentration of CODcr NH3-N and TP were less than 40 mg/L, 7 mg/L and 0. 5 mg/L respectively,with removal efficiency of TN is 53.4 ％, effluent concentra tion of TN was less than 20 mg/L. The urban wastewater was satisfactory to Grade B of national discharge standard of GB18918- 2002.