氧化-混凝-吸附联合处理垃圾渗滤液的实验研究

Experimental Study on the Treatment of Landfill Leachate by Oxidation- coagulation- adsorption Combined Treatment Process

采用氧化、混凝、吸附及其联合处理工艺去除垃圾渗滤液COD和色度。研究结果表明:(1)单独采用混凝法,COD和色度的去除率较低,分别仅有0.33%和4.62%;(2)使用高锰酸钾化学氧化法,COD和色度的去除率分别为83.84%,96.05%,最佳投放浓度为0.48 g/L;(3)氧化-混凝-吸附联合法处理实验结果较为理想,高锰酸钾投加量为0.48 g/L,粉末活性炭投加量为0.9 g/L,COD和色度去除率分别达到93.31%和98.82%。

The oxidation,coagulation,adsorption and three combined treatment processes were applied to remove the COD and chroma of landfill leachate. The results showed that the removal rates of COD and chroma were poor when only using coagulation method,only 0. 33% and 4. 62% respectively. The removal rates of COD and chroma were significantly improved when using potassium permanganate oxidation, 83. 84% and 96. 05% respectively, and the optimal concentration was 0. 48 g / L. The experimental results were satisfactory when using oxidation- coagulation- adsorption combined treatment process,and the potassium permanganate optimal dosage was 0. 48 g / L,the dosage of activated carbon was 0. 9 g / L,the removal rates of COD and chroma were 93. 31% and 98. 82%,respectively.