Hydrogen peroxide-enhanced iron-mediated aeration for the treatment of mature landfill leachate
作者： Yang Deng , James D. Englehardt
DOI: 10.1016/J.JHAZMAT.2007.08.049
关键词:
摘要: Abstract Municipal landfill leachate is being disallowed for biological treatment by some sewer authorities due to its recalcitrance and corrosiveness, therefore physicochemical may be needed. In this paper, hydrogen peroxide-enhanced iron (Fe0)-mediated aeration (IMA) was studied as an alternative the of mature leachate. Bench-scale Taguchi array screening tests full factorial were conducted. Iron grade, initial pH, H2O2 addition rate, rate significantly influenced both overall chemical oxygen demand (COD) removal consumption. enhanced IMA-treated at pH 8.2, COD reduced 50% oxidation coagulation, a level almost equivalent those obtained Fenton treatment. Meanwhile, 5-day biochemical (BOD5)/COD ratio increased from 0.02 0.17. particular, effect became minor greater than theoretical complete organics H2O2. addition, 83% 300 mg/L ammonia nitrogen 38% 8.30 mS/cm electrical conductivity removed when not adjusted. Based on these results, process appears suitable
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