UV-TiO_(2)-芬顿协同处理垃圾渗滤液纳滤浓缩液研究  

Study on UV-TiO_(2)-Fenton Synergistic Treatment of Landfill Leachate Nanofiltration Concentrate

作　　者：杨纬涵 何德文 周康根[1,2] 滕春英 彭长宏[1,2] 陈伟 YANG Weihan;HE Dewen;ZHOU Kanggen;TENG Chunying;PENG Changhong;CHEN Wei(School of Metallurgy and Environment,Central South University;Chinese National Engineering Research Center for Control and Treatment of Heave Mental Pollution,Changsha 410083,China)

机构地区：[1]中南大学冶金与环境学院 [2]中南大学国家重金属污染防治工程技术研究中心,湖南长沙410083

出　　处：《水处理技术》2021年第11期77-80,85,共5页Technology of Water Treatment

基　　金：国家自然科学基金青年项目(21707167);湖南省重点研发计划项目(2018SK2023)。

摘　　要：在光照条件下,通过TiO_(2)光催化反应和光助芬顿反应的结合,以实现垃圾渗滤液纳滤浓缩液(LLNC)中有机污染物去除的目的。结果表明,反应的优化条件为:pH=2.5,H_(2)O_(2)和COD质量比4,H_(2)O_(2)和Fe^(2+)摩尔比6,初始COD为400 mg/L,对LLNC中COD、TOC、UV_(254)的去除率分别为81.4%、69.2%、57.6%。仅TiO_(2)纳米光催化对LLNC中的COD几乎没有去除效果,而TiO_(2)纳米光催化反应和光助芬顿反应协同作用时,COD的去除率是仅光助芬顿反应的2.2倍。This work aimed to remove organic pollutants in landfill leachate nanofiltration concentrate(LLNC)by combining TiO_(2)photocatalytic reaction and photo-assisted Fenton reaction in light condition.The results showed that the optimal conditions were pH=2.5,mass ratio of H_(2)O_(2)and COD was 4,molar ratio of H_(2)O_(2)and Fe^(2+)was 6,and initial COD concentration was 400 mg/L.The removal rates of COD,TOC,and UV_(254) in the LLNC were:81.4%,69.2%,and 57.6%,respectively.The individual nano-TiO_(2)photocatalytic process had almost no effect on removal of COD in the LLNC.But the synergistic treatment of nano-TiO_(2)photocatalysis and photo-assisted Fenton reaction,the removal rate of COD was 2.2 times that of the photo-assisted Fenton reaction individually.

关 键 词：光催化 光芬顿 垃圾渗滤液 协同作用 分子光谱 

分 类 号：X703.1[环境科学与工程—环境工程]