咸阳某污水处理厂CASS工艺运行参数优化

Optimization of CASS processing operating parameters in a sewage treatment plant in Xianyang

针对污水处理厂CASS工艺处理城市污水过程中COD、BOD5、SS、NH3-N去除率较高,但TN、TP去除效果不佳的情况,优化调整了CASS工艺运行参数。调整后COD、BOD5、SS、TN、NH3-N、TP的去除率分别为94.2%、88.6%、93.7%、69.9%、96.8%、78.4%,各项出水指标均达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级B标准。

Aiming at the fact that in the course of treating urban sewage by CASS process, the removing effects of COD, BODs, SS, NH3-N are high, but removing effects of TN and TP are not good, the operating parameters of CASS process have been optimized and adjusted. After the adjustment, the removing rates of COD, BODs, SS, TN, NH3-N and TP are 94.2%, 88.6% ,93.7%, 69.9% ,96.8%, and 78.4%, respectively. Every effluent index can meet the re- quirements of level B in class I of Discharge Standard of Pollutants from Urban Sewage Treatment Plants （GB 18918--2002）.