Fenton法深度处理垃圾渗滤液的试验

对六里屯垃圾填埋场小试采用UASB处理垃圾渗滤液,处理后ρ_(COD)为2350～2600 mg/L、ρ_(NH_4~+)-N约为1300 mg/L,存在可生化性差、C/N低等问题。在进一步生化处理前还需要物化处理.试验采用Fenton试剂氧化然后用化学试剂进行混凝处理,考察不同投加条件下的去除效果.试验结果表明,Fenton试剂氧化法与化学沉淀法联合使用对去除垃圾渗滤液中的浊度、COD和NH_4~+-N有明显的效果.当c_(Fe)~(2+)=0.03 mol/L,c_(H_2O_2)= 0.09mol/L,ρ_(PAC)=800mg/L,ρ_(KP1207B)=10mg/L时,总体去除效果较好,三者去除率分别为62%、54%、35%.

Advanced Treatment of Landfill Leachate by Fenton Oxidation-Coagulation Process

After the UASB treatment in the trial experiment,the landfill leachate in Liulitun Landfill Yard, with COD and ammonia-nitrogen concentration being 2350-2600 mg/Land about 1 300 mg/L respectively, was inefficient in being biochemicalized and low in C/N,which required physico-chemical treatment before advanced biochemical treatment.This experiment introduced Fenton reagent oxidation first and then chemical coagulation,so as to compare removal effects under different dosages.Results showed that the combination of oxidation of Fenton reagent and chemical deposition was effeetive in the removal of turbidity,COD and am- monia-nitrogen in landfill leachate.Under the condition of C_(Fe)~(2+)=0.03 mol/L,c_(H_(2)O_2)=0.09 mol/L,ρ_(PAC)= 800 mg/L,ρ_(KP1207B)=10mg/L,this method was particularly effective,with the removal rates being 62%, 54% and 35% respectively.