Fenton氧化-活性炭-沸石吸附去除垃圾渗滤液中的有机物  

EXPERIMENTAL RESEARCH ON COMBINED TECHNOLOGY OF FENTON OXIDATION-ACTIVATED CARBON-ZEOLITE ADSORPTION TO REMOVE ORGANIC COMPOUNDS IN LANDFILL LEACHATE

作　　者：肖瑜[1] 刘以清 彭雪妍[1] 龚秋实[1] 卢炳丽 

机构地区：[1]桂林理工大学环境科学与工程学院广西矿冶与环境科学实验中心,广西桂林541004

出　　处：《环境工程》2014年第2期45-50,共6页Environmental Engineering

基　　金：广西矿业与环境学院实验中心项目

摘　　要：研究了Fenton试剂氧化处理垃圾渗滤液的最佳反应条件,在此条件下进行活性炭、沸石组合吸附法试验,并对处理效果进行比较,结果显示:在pH值为4,n(H2O2)/n(Fe2+)=10,反应时间60 min,沉淀时间90min时,Fenton试剂对渗滤液的氧化效果最好;三种组合吸附方式对渗滤液中COD的吸附效果依次为活性炭-沸石>沸石-活性炭>活性炭+沸石;对垃圾渗滤液氨氮的去除能力为:活性炭+沸石>活性炭-沸石>沸石-活性炭。经过Fenton试剂氧化-活性炭+沸石吸附处理后,COD、氨氮、色度和pH值分别为82.05 mg/L、22.65 mg/L、5倍和6.25。分析有机物的去除机理分析得出,经过Fenton试剂氧化-活性炭+沸石吸附处理,垃圾渗滤液中的有机物能够得到充分降解,其种类与各物质的含量都有所降低,特别是氨氮的含量和色度明显降低。经氧化吸附处理后,垃圾渗滤液各项指标均符合排放标准。The optimal reaction conditions on treating refuse leachate with Fenton reagent oxidation was studied, based on which the tests of activated carbon-zeolite combination adsorption were carried out, whose treatment effect was compared, the results showed that the best effect could be got under the conditions of pH = 4, n（ H202 ）/n（ Fe2＋ ） = 10, reaction time = r, 60 min and settling time = 90 min. The ranking of the adsorption effect of COD in the leachate by three combinations was in the order：activated carbon-zeolite 〉 zeolite-activated carbon 〉 activated carbon ＋ zeolite; and the capacity of removing NH3-N in the leachate was in the order： activated carbon ＋ zeolite 〉 activated carbon-zeolite 〉 zeolite-activated carbon. COD, NH3-N, chroma and pH in the leachate were 82.05 mg/L, 22. 65 mg/L, 5 times and 6.25 respectively after the trentment by Fenton oxidation-activated carbon ＋ zeolite adsorption; and also the organisms could be fully degraded, whose sorts and content were decreased. Hence all the indexes of the refuse leachate could meet the emission standard.

关 键 词：垃圾渗滤液 FENTON氧化 活性炭 沸石 

分 类 号：X703[环境科学与工程—环境工程]