两级芬顿对膜滤浓缩液与垃圾渗滤液协同处理的工艺研究

Two-stage Fenton's Process Study on Synergistic Treatment of Membrane Filtration Concentrates with Waste Leachate

由于南宁市某产业园生活垃圾填埋场的膜滤浓缩液停止回灌,南宁市城南生活垃圾卫生填埋场渗滤液处理站需承担部分膜滤浓缩液的处理任务。本研究将膜滤浓缩液与垃圾渗滤进行混合,使用两级芬顿和絮凝芬顿联合法对膜滤浓缩液与垃圾渗滤液进行协同处理,对比这两种工艺对混合液中的COD去除效果。结果表明,两级芬顿氧化法对混合液中的COD的去除效率更高,最佳反应条件为pH值为4.0,FeSO_(4)投加量为12 g/L、H_(2)O_(2)投加量为25 mL/L时,COD去除率为92.24%以上。

As the membrane filtration concentrate of a domestic waste landfill in an industrial park in Nanning city stopped recharging,the leachate treatment station of the sanitary landfill of domestic waste in Chengnan,Nanning city needed to undertake part of the membrane filtration concentrate treatment task.The membrane filtration concentrate was mixed with waste leachate,and the two-stage Fenton and flocculation Fenton combined methods were used for the synergistic treatment of membrane filtration concentrate and waste leachate to compare the COD removal effect of these two processes on the mixed liquid.The results showed that the two-stage Fenton oxidation method was more efficient in removing COD from the mixed solution,and the best reaction conditions were as follows:pH=4.0,FeSO_(4) dosage was 12 g/L,H_(2)O_(2) dosage was 25 mL/L,and the COD removal rate was more than 92.24%.