电化学氧化法处理垃圾渗滤液纳滤浓缩液  

Treatment of concentrated water from nanofiltration of bio-treated landfill leachate by electrochemical oxidation process

作　　者：王庆国 乐晨 卓瑞锋 邓鹏 黄兴刚 韩颖 张珍明 

机构地区：[1]江苏维尔利环保科技股份有限公司,常州213000 [2]贵州省生物研究所,贵阳550009

出　　处：《环境工程学报》2015年第3期1308-1312,共5页Chinese Journal of Environmental Engineering

摘　　要：实验利用电化学氧化法处理垃圾渗滤液纳滤浓缩液,以提高废水的可生化性。研究考察了水力停留时间、进水流量、循环流量、电流强度和原水氯离子浓度对有机物去除的影响。研究结果表明,电化学氧化法的最佳运行条件如下:水力停留时间为3 h,进水流量为1 m3/h,循环流量为15 m3/h,电流强度为420 A。在上述条件下,原水COD浓度从3 100mg/L降到1 311.3 mg/L,去除率达到57.7%,BOD/COD值由0.03提升至0.31。氯离子对电解有促进作用,但原水氯离子浓度超过5 000 mg/L,不需要外加工业盐。This study primarily aimed to improve the biodegradability of landfill leachate concentrate which generated from nanofiltration of biologically pretreated landfill leachate,electrochemical oxidation technology was employed. The effects of hydraulic residence time( HRT),inflow rate,circulation flow rate,current intensity and Cl-concentration on the removal of organic substances were investigated. The results showed that the optimal reaction conditions were determined as follows: HRT of 3 h,inflow rate of 1 m3/ h,circulation flow rate of15 m3/ h and current intensity of 420 A. Under such conditions,COD concentration reduced from 3 100 mg / L to1 311. 3 mg / L and the removal rate achieved 57. 7%. The BOD / COD value was enhanced from 0. 03 to 0. 31.The degradation of organic matters was enhanced by Cl-,but sodium chloride was not needed as the Cl-concentration of nanofiltration concentrate was exceeding 5 000 mg / L.

关 键 词：电化学氧化 垃圾渗滤液 纳滤浓缩液 电流强度 

分 类 号：X703.1[环境科学与工程—环境工程]