Fenton法深度处理垃圾渗滤液的试验

李军; 王磊; 彭锋; 刘红; 何建平; 孟光辉; 陈刚; 金永祥; 任健

Fenton法深度处理垃圾渗滤液的试验

Advanced Treatment of Landfill Leachate by Fenton Oxidation-Coagulation Process

摘要

摘要: 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2 350~2 600 mg/L、ρ_NH₄⁺-N约为1 300 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NH₄⁺-N有明显的效果.当c_Fe²⁺=0.03 mol/L,c_H₂O₂=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%.

Abstract: After the UASB treatment in the trial experiment,the landfill leachate in Liulitun Landfill Yard, with COD and ammonia-nitrogen concentration being 2 350-2 600 mg/L and 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.Resultsshowed that the combination of oxidation of Fenton reagent and chemical deposition was effective in the removal of turbidity,COD and ammonia-nitrogen in landfill leachate.Under the condition of c_Fe²⁺=0.03 mol/L,c_H₂O₂=0.09 mol/L,ρ_PAC= 800 mg/L,ρ_KP1207B=10 mg/L,this method was particularly effective,with the removal rates being 62 %, 54 % and 35 % respectively.

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