电芬顿-生物泥浆法联合修复芘污染土壤  

Remediation of pyrene-contaminated soil by a combined process with electro-Fenton and bioremediation

作　　者：徐文迪 郭书海[2,3] 李刚 吴波[2,3] 李凤梅 XU Wen-di;GUO Shu-hai;LI Gang;WU Bo;LI Feng-mei(Shcool of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China;Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;National-local Joint Engineering Laboratory of Contaminated Soil Remediation by bio-physicochemical Synergistic Process,Shenyang 110016,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [3]污染土壤生物-物化协同修复技术国家地方联合工程实验室,辽宁沈阳110016

出　　处：《中国环境科学》2019年第10期4247-4253,共7页China Environmental Science

基　　金：国家点研发计划(2018YFC1801900);沈阳理工大学引进高层次人才科研支持经费(1010147000806)

摘　　要：以芘污染土壤为研究对象,建立一种电芬顿与生物泥浆法联合的修复(EF-BIO)处理方法.通过对2种修复技术在污染物降解过程中显现出的不同降解特性以及所需环境因素的区别与变化的分析和研究,构建一种高效的联合的有机污染土壤修复方法.研究主要分为两部分:第一部分通过目标污染物去除率与降解速率,羟基自由基(·OH)生成量与微生物数量,以及污泥pH值等参数的变化分析得出联合修复方法的联合顺序;第二部分通过不同联结时间点目标污染物去除率与降解速率,微生物数量变化以及中间产物变化等的研究分析,确定最佳的EF-BIO联合修复方法.结果显示:当EF先进行6h,EF-BIO联合修复法仍然在72h内对芘的去除率高达91.02%,比单独使用两种方法的去除率提高50%以上.The electro-Fenton(EF)process combined with bioremediation(BIO)process was established for pyrene(Pyr)contaminated soil.Two factors including degradation characteristics as well as environmental parameters were compared between EF and BIO processes.Optimal process order was determined by a series batch tests of parameters,such as the effects of removal rate,degradation efficiency,concentration of·OH radical,biomass,and the pH value.The results showed EF process followed by BIO process was the optimum process order,the removal efficiency of Pyr was almost 50%higher than each single process.After 72h of reaction time,Pyr removal efficiency of the EF-BIO combined treatment process was still high of 91.02%.

关 键 词：电芬顿 物泥浆法 联合修复 芘 

分 类 号：X53[环境科学与工程—环境工程]