Electrochemical treatability of refractory pollutants in landfill leachate

L. C. Chiang, Juu-En Chang, Ten-Chin Wen

研究成果: Article同行評審

25 引文 斯高帕斯(Scopus)

摘要

Landfill leachate treatment is the most troublesome aspect of the landfill management Investigation of leachate characteristics at two landfill sites in Taiwan showed that the biological processes were inefficient for the treatment of leachate, regardless of whether an anaerobic or aerobic process was used in addition, conventional flocculation/sedimentation processes were also ineffective for post-treatment of leachate effluents from biological treatment processes the discharged leachate still contained lots of refractory pollutants and it failed to meet the effluent quality standards of the ROC (COD < 500 mg/L, NH4 +-N < 20 mg/L). In an attempt to improve leachate effluent quality, in this study, an electrochemical oxidation process was applied to treat the landfill leachate after biodegradation. Results from both batch and continuous experiments indicate that over 90% of COD and NH4 +-N in the landfill leachate are removed by the electrochemical oxidation process. In addition, the electrochemical oxidation process also demonstrated a good efficacy for the removal of refractory compounds. After electrolysis, the chlorinated organic matters (as TOX) in the landfill leachate was reduced from 194 to less than 2 mg CI/L and the BOD/COD ratio of the landfill leachate was also improved from 0.05 to 071 these results indicate that the electrochemical oxidation process is a promising process for the treatment of landfill leachate.

原文English
頁(從 - 到)71-82
頁數12
期刊Hazardous Waste and Hazardous Materials
12
發行號1
DOIs
出版狀態Published - 1995 一月 1

All Science Journal Classification (ASJC) codes

  • 毒理學
  • 廢物管理和處置
  • 污染

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