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电化学氧化法处理垃圾渗滤液纳滤浓缩液
引用本文:王庆国, 乐晨, 卓瑞锋, 邓鹏, 黄兴刚, 韩颖, 张珍明. 电化学氧化法处理垃圾渗滤液纳滤浓缩液[J]. 环境工程学报, 2015, 9(3): 1308-1312. doi: 10.12030/j.cjee.20150353
作者姓名:王庆国  乐晨  卓瑞锋  邓鹏  黄兴刚  韩颖  张珍明
作者单位: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
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3 100 mg/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。

关 键 词:电化学氧化   垃圾渗滤液   纳滤浓缩液   电流强度
收稿时间:2014-03-27

Treatment of concentrated water from nanofiltration of bio-treated landfill leachate by electrochemical oxidation process
Wang Qingguo, Le Chen, Zhuo Ruifeng, Deng Peng, Huang Xinggang, Han Ying, Zhang Zhenming. Treatment of concentrated water from nanofiltration of bio-treated landfill leachate by electrochemical oxidation process[J]. Chinese Journal of Environmental Engineering, 2015, 9(3): 1308-1312. doi: 10.12030/j.cjee.20150353
Authors:Wang Qingguo  Le Chen  Zhuo Ruifeng  Deng Peng  Huang Xinggang  Han Ying  Zhang Zhenming
Affiliation:1.Jiangsu Welle Environmental Co. Ltd., Changzhou 213000, China; 2.Guizhou Institute of Biology, Guiyang 550009, China
Abstract:
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 of 15 m3/h and current intensity of 420 A. Under such conditions, COD concentration reduced from 3 100 mg/L to 1 311.3 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.
Keywords:electrochemical oxidation  landfill leachate  nanofiltration concentrate  current intensity
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