PAC混凝沉降法处理垃圾渗滤液的研究

采用混凝沉降法对垃圾填埋场所产生的垃圾渗滤液进行处理,以处理出水的CODcr、电导率、脱色率和浊度等作为处理程度的表征指标,考察不同用量的混凝剂聚合氯化铝(PAC)对垃圾渗滤液的处理效果。实验结果表明,垃圾渗滤液的处理效果随着混凝剂用量的增大而增强,混凝剂PAC最佳用量:30 g/L。垃圾渗滤液处理后,CODcr去除率达到36.45%,脱色率达到84.0%,电导率由原来的1.55×104 S/cm降低到处理后的0.94×104 S/cm,浊度也有一定程度的降低。

Study on Treatment of Landfill Leachate by PAC Coagulation and Precipitation

Landfill leachate was treated by coagulation and precipitation.CODcr in effluent,electrical conductivity,decolorization and turbidity were chosen as index,treatment effects of different dosage PAC coagulant were investigated.The experimental results show that the bigger PAC coagulant dosage,the better treatment effect;the optimum dosage of PAC coagulant is 30 g/L.After landfill leachate is treated,CODCr removal rate reaches 36.45%,decolorization reaches 84.0%,and conductivity decreases from 1.55×10^4 S/cm to 0.94×10^4 S/cm,turbidity has fall in a extent,too.