混凝-Fenton工艺处理垃圾渗滤液膜滤浓缩液的中试研究

采用混凝-Fenton组合工艺对漳州九龙岭垃圾填埋场的渗滤液经NF+RO处理后膜滤浓缩液进行中试试验,探讨了PAC、PAM、FeSO4·7H2 O和H2 O2的投加量对处理效果的影响及反应机理,并设计各工艺单元参数.结果表明:混凝工艺药剂最佳投加量为PAC 2000 mg/L、PAM 9 mg/L;Fenton工艺的氧化剂最佳投加量为FeSO4·7H2 O 1.6 g/L、H2 O28 mL/L.膜滤浓缩液经处理后,出水COD约300 mg/L,色度约30,平均去除率分别达76.8%和95.4%,处理费35.52元/t,试验结果为同类膜滤浓缩液提供了经济可行的处理方法和工艺设计依据.

Pilot Treatment on Membrane Filtration Concentrate from Landfill Leachate with Coagulation-Fenton Process

The Coagulation -Fenton treatment of landfill leachate concentrates was investigated in this pilot experiment, which were generated from nano -filtration and reverse osmosis treated landfill leachatefrom ZhangzhouJiulong Mountain. The treatment efficiency and mechanism of concentrates about PAC, PAM, FeSO4 ·7H2 O and H2 O2 dosages were studied, moreover, the specific parameters of each treatment process unit were put forward. The results indicated that the optimum dosages of coagula-tion process is PAC 2000 mg/L, PAM 9 mg/L, respectively, and Fenton reaction is FeSO4 ·7H2 O 1. 6 g/L, H2 O28 mL/L, re-spectively. After coagulation and Fenton reaction, the effluent content and removal were COD about 300 mg/L,76. 8%, and chroma about 30,95. 4%,which cost 35. 52 yuan for per ton of concentrates. It is proved to be an economic and technology feasi-ble method of the landfill leachate concentrate treatment.