活性焦两级生物滤池用于生活污水深度处理的研究

Advanced Treatment of Effluent in Municipal Wastewater Treatment Plant by Two-stage Active Coke Biological Aerated Filter

采用活性焦两级生物滤池工艺对城镇污水厂二级出水进行深度处理,研究了该工艺的脱氮除碳效果。结果表明,该工艺在水力停留时间6h和不排泥的运行条件下,COD平均去除率为31.29%,TP平均去除率为58.49%,TN平均去除率20.24%,NH_(4)^(+)-N平均去除率为57.03%,SS平均去除率69.85%。系统运行稳定,出水水质可达到COD<20mg/L、TN<11mg/L,对有机物和总氮具有良好的去除效果。活性焦两级生物滤池工艺能有效实现污水厂尾水的深度处理净化,促进污水的再生利用。

Two-stage biological aerated filter based on active coke were established for advanced treatment for effluent from municipal wastewater treatment plant,and the effect of removal efficiency of pollutant was studied.The results showed that more than 31.29%of COD,58.49%of TP,20.24%of TN,57.03%of NH_(4)^(+)-N,69.85%of SS could be degraded at the condition of 6 h of HRT and a long SRT.COD was less than 20 mg/L and TN was less than 11mg/L,which implied the process had a good effect on the removal of organics and total nitrogen.The effluent quality of two-stage active coke biological aerated filter system is fine,and better in line with the state wastewater discharge standards.It is conducive to the recycling of wastewater.