硫酸铝絮凝处理垃圾渗滤液的特性研究

采用硫酸铝为絮凝剂对垃圾渗滤液进行了前期强化处理特性研究 ,探讨了絮凝剂用量、垃圾渗滤液的酸度以及温度对城市垃圾渗滤液絮凝效果的影响。结果表明 ,在垃圾渗滤液絮凝处理过程中 ,硫酸铝用量约 0 .5 %为宜 ;絮凝过程中酸度和温度对垃圾渗滤液的絮凝效果有很大的影响 ,对不同的垃圾渗滤液类型和附属资源选择适宜的酸度和温度可以降低后续处理过程的负荷与处理成本 ,在室温下 ,用硫酸铝絮凝垃圾渗滤液的处理过程中 ,在pH =6.5左右处理效果最好。

Study on Treatment of Municipal Landfill Leachate by Chemical Flocculation Using Aluminum Sulfate as Flocculant

The research on treatment of municipal landfill leachate using aluminum sulfate as flocculant was introduced. The influence of dosage of aluminum sulfate, acidity of municipal landfill leachate and operation temperature on the process of chemical flocculation was discussed. The optimum dosage of aluminum sulfate to the landfill leachate was about 0.5 %, that the acidity of municipal landfill leachate and the operation temperature had obvious effect on the flocculation process. For different types of landfill leachate and affiliated resources, the optimum acidity and temperature could be selected. This could reduce the burthen of following treatment and the cost. At the room temperature, the optimum acidity was 6.5 when using aluminum sulfate as flocculant.