摘要
用絮凝法对难降解的循环式准好氧垃圾渗滤液进行了处理,以垃圾渗滤液的CODcr去除率为主要考察指标,探讨了絮凝剂、最佳絮凝剂的投加量以及pH值等因素对这类渗滤液处理效果的影响,在此基础上确定了最佳处理条件。结果表明,用硫酸亚铁的絮凝处理效果最好,当浓度为20%的硫酸亚铁投加量为0.7 mL/100 mL,pH值为10,与聚丙烯酰胺(PAM)的投加比例为2:1时,可使垃圾渗滤液的CODcr去除率达到60%,色度去除率达到40%,使渗滤液的CODcr从2654.6 mg/L降到977.8 mg/L,达到国家三级排放标准。
The semi - aerobic landfill leachate has been treated by flocculation. Using the COD removal rate of landfill leachate as the inspection target, the influence of factors such as flocculant, the optimum flocculant＇s dosage and the most pH vaNue, et al on the treatment result has also been discussed. Base on above study, the optimum treatment condition has been determination. The experiment results show that the ferrous sulfate＇s flocculation is best. when the dosage of ferrous sulfate whose concentration is 20% is 0.7 mL/100 mL, the pH value is 10, the proportion of adding polyacrylamide （PAM） is 2 ： 1, the CODe, removal rate of landfill leachate can reach 60% , chromaticity removing rate can reach 40%. It can make the CODer of landfill leachate reduce from 2654.6 mg/L to 977.8 mg/L and be satisfied for the three grade discharge standard.
出处
《环境科学与管理》
CAS
2007年第12期79-81,共3页
Environmental Science and Management
基金
四川省教育厅资助自然科学研究项目(2004B009)
四川师范大学2007年本科生科创项目
