Fenton氧化／混凝法后续处理垃圾渗滤液研究

Experimental Study on Fenton Oxidation/Coagulation Process in Subsequent Treatment of Landfill Leachate

六里屯垃圾填埋场的垃圾渗滤液经UASB+A/O系统处理后,COD和氨氮含量分别在1350～1500和280～420mg/L,还需要进一步处理。因此采用Fenton氧化/混凝法作为后续处理工艺,考察了不同条件下对污染物的去除效果。结果表明,当pH=7、[Fe2+]=0.0167mol/L、[H2O2]=0.05mol/L、[FeCl3]=600mg/L、[AP410C]=4mg/L时,该工艺对浊度、COD和氨氮的去除率分别为82%、80.7%、55.9%,去除效果较好。

After treated by UASB ＋ A/O system, the landfill leachate in Liulitun Landfill Site has COD of 1 350 to 1 500 mg/L and ammonia nitrogen of 280 to 420 mg/L, and needs to be further treated. Therefore, using Fenton oxidation/coagulation as subsequent treatment process, the pollutant removal effects under different conditions were investigated. The results show that under the conditions of Fe^2＋ = 0. 016 7 mol/L, H2O2 =0.05 mol/L, FeCl3 =600 rag/L, AP410C =4 mg/L and pH =7, this method is particularly effective, and the removal rates of turbidity, COD and ammonia nitrogen are 82% , 80.7% and 55.9% respectively.