对曝气生物滤池出水的PAC化学除磷效果研究

Study on the chemical phosphorus removal effect of PAC for Biological Aerated Filter (BAF) effluent

分析了聚合氯化铝(PAC)的化学混凝除磷效果及PAM的助凝效果,并进行了试验研究,PAC烧杯实验结果表明:总磷浓度为1.39 mg/L时,单独投加60 mg/L的PAC即可使出水TP<0.5 mg/L;生产性试验表明:生物处理单元稳定运行的情况下,PAC投加量在65 mg/L～70 mg/L时可使出水TP<0.5 mg/L,达到城镇污水处理厂污染物排放标准(GB 18918-2002)中一级A排放标准。

This paper analyzes the chemical phosphorus removal effect of PAC and the coagulation aid effect of PAM,and carries on experimental research.PAC jar tests results show that when the Total Phosphorus（TP） reaches is 1.39 mg/L,single adding 60 mg/L PAC can make the effluent TP0.5 mg/L.Productive test shows that under the condition of stable operation of biological processing unit,adding 65 mg/L～70 mg/L PAC can make the effluent TP0.5 mg/L,which achieves the level one A drainage standard of pollutant drainage standards（GB 18918-2002） of urban sewage treatment plant.