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.