氯离子对电解氧化处理难降解垃圾渗滤液的影响  

Impact of chloride ion on undegradable landfill leachate treatment by electrochemical oxidation

作　　者：刘咏[1] 刘丹[2] 赵仕林[1] 张爱平[2] 李瑞桢[1] 

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610066 [2]西南交通大学环境科学与工程学院,四川成都610031

出　　处：《重庆大学学报（自然科学版）》2008年第12期1430-1435,共6页Journal of Chongqing University

基　　金：四川省教育厅自然科学研究资助项目(2004B009);四川师范大学校级科研资助项目(06lk025)

摘　　要：以循环式准好氧垃圾渗滤液为主要研究对象,探讨了渗滤液中氯离子对有机物电解去除效果的影响。实验结果表明,在一定条件下,渗滤液中难降解有机物的电解去除率随氯离子浓度的增加而增大。氯离子初始浓度和渗滤液COD等工艺条件对氯离子的作用效果有一定的影响。氯离子初始浓度在较低的范围内时氯离子对COD的去除比电耗的影响作用较明显,当渗滤液中氯离子初始浓度大于12.5 g/L时,COD的去除比电耗随氯离子初始浓度的增加变化不大;在电解处理低COD渗滤液时氯离子初始浓度对有机物降解效果的影响作用更明显。We investigated the removal effects of chloride ion on treating organic substances with electrolysis using leachate from semi-aerobic bioreactors. The experimental results show that, under the given conditions, the removal efficiency of refractory organic substances increases with rising initial chloride ion concentration in leachate. The impact of chloride ion on removal efficiency mainly is influenced by the initial chloride ion concentration and the chemical oxygen demand （COD） in leachate. The impact of chloride ion on the specific electric consumption of removal COD is obvious when the initial chloride ion concentration is lower. No obvious change of this impact is observed when the chloride ion concentration exceeds 12.5 g/L. Meanwhile, the more obvious impact of initial chloride ion concentration on organic substance removal is observed when the COD concentration in leachate is lower.

关 键 词：渗滤液处理 电解 氧化 氯离子 有机物 比电耗 

分 类 号：X705[环境科学与工程—环境工程]