焙烧改性膨润土处理垃圾渗滤液

Experiment on the Disposal of Garbage Percolate and Filtrate by Using Modified Bentonite

用焙烧法对膨润土进行活化改性 ,改性后的膨润土用于处理垃圾渗滤液 ,同时研究其去除垃圾渗滤液中CODCr和色度的适宜条件 .实验结果表明 ,膨润土的最佳改性焙烧温度为 4 0 0℃ ,焙烧改性膨润土对垃圾渗滤液的处理效果较之原土有较大程度提高 ,其CODCr和色度的去除率分别达到 82 .8%和 89.6 % .

Activating modification of bentonite is carried out by the method of calcination. Calcinated and modified bentorite is used in the disposal of garbage percolate and filtrate. The suitable conditions for it to remove the COD Cr and the color from garbage percolate and filtrate are studied. As indicated by experimental results, 400 ℃ is the best temperature of calcination for the bentonite to be modified; calcinated and modified bentonite shows a higher effect than original bentonite in disposal of garbage percolate and filtrate; it removes COD Cr and color of garbage percolate and filtrate up to the removal rate of 83.8% and 90.3% respectively.