Fenton试剂氧化-活性白土吸附联合处理垃圾渗滤液  

Treatment for Landfill Leachate by Combined Technology of Fenton Oxidation-Activated Argil Adsorption

作　　者：李中秋[1] 肖瑜[1] 刘以清 龚秋实[1] 黄浦[1] 陈菊清[1] 

机构地区：[1]桂林理工大学,广西矿冶与环境科学实验中心,广西桂林541004

出　　处：《工业安全与环保》2015年第6期1-5,20,共6页Industrial Safety and Environmental Protection

基　　金：广西危险废物处置产业化人才小高地项目

摘　　要：垃圾渗滤液是一种高浓度有机废水,为了降低其有机质含量,通过Fenton试剂-活性白土联合吸附法,研究了在不同反应条件下垃圾渗滤液中TOC和NH+4-N的去除率。结果为:在pH=4.5,H2O2投加量为260 mmol/L,H2O2/Fe2+摩尔比为13,反应50 min,沉淀90 min时,Fenton氧化效率最高;在pH=3.5,吸附剂投加量为140 g/L,吸附时间为50 min,出水渗滤液的TOC值最小,去除率为82.85%。通过GC-MS分析发现,富含烷烃类有机物或者苯酚类有机物的废水,最好采取物理吸附,而不是化学吸附。经过氧化-吸附过程处理垃圾渗滤液,出水水质达到排放标准。Leachate is a kind of high concentration organic wastewater and in order to reduce its organic matter content,by Fenton reagent-activated clay combined adsorption the removal of TOC and NH＋4-N in landfill leachate is studied under different reaction conditions.Results show that： the Fenton oxidation efficiency is the highest in conditions pH = 4.5,H2O2 dosage 260 mmol / L,H2O2/ Fe^2 ＋molar ratio of 13,50 mins of reaction time and 90 mins of precipitation, when pH = 3.5,adsorbent dosage of 140 g / L,adsorption time is 50 min,water leachate TOC value is least and the removal rate is 82.85%.GC-MS analysis reveals that for organic hydrocarbons or phenol-rich organic matter in the wastewater,it is best to take physical adsorption and not chemisorption instead.After oxidation-landfill leachate treatment adsorption process,the effluent meets emission standards.

关 键 词：FENTON试剂 活性白土 TOC 吸附动力学 

分 类 号：X703.1[环境科学与工程—环境工程]