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Fenton试剂对垃圾渗滤液中腐殖酸的去除特性

吴彦瑜 覃芳慧 赖杨兰 彭华平 周少奇

吴彦瑜, 覃芳慧, 赖杨兰, 彭华平, 周少奇. Fenton试剂对垃圾渗滤液中腐殖酸的去除特性[J]. 环境科学研究, 2010, 23(1): 94-99.
引用本文: 吴彦瑜, 覃芳慧, 赖杨兰, 彭华平, 周少奇. Fenton试剂对垃圾渗滤液中腐殖酸的去除特性[J]. 环境科学研究, 2010, 23(1): 94-99.
WU Yan-yu, QIN Fang-hui, LAI Yang-lan, PENG Hua-ping, ZHOU Shao-qi. Removal Performance of Humic Substances in Landfill Leachate by Fenton Reagent[J]. Research of Environmental Sciences, 2010, 23(1): 94-99.
Citation: WU Yan-yu, QIN Fang-hui, LAI Yang-lan, PENG Hua-ping, ZHOU Shao-qi. Removal Performance of Humic Substances in Landfill Leachate by Fenton Reagent[J]. Research of Environmental Sciences, 2010, 23(1): 94-99.

Fenton试剂对垃圾渗滤液中腐殖酸的去除特性

基金项目: 广州市重大科技项目(2008DLB2080500)

Removal Performance of Humic Substances in Landfill Leachate by Fenton Reagent

  • 摘要: 采用Fenton试剂处理反渗透浓缩渗滤液,通过腐殖酸相对含量(UV254),CODCr,TOC,腐殖酸对CODCr去除的贡献比(α)及氧化/混凝去除率比(φ)等表征手段,比较不同初始pH,H2O2投量〔c(H2O2)〕和Fe2+投量〔c(Fe2+)〕对渗滤液CODCr和UV254的去除效果. 结果表明:在试验范围内,UV254去除率(48.5%~78.2%)高于CODCr去除率(40.3%~62.5%);腐殖酸对CODCr去除的贡献比(α>0.77)远高于反应前(αWTBZ〗00.61),说明腐殖酸的降解影响和控制着整个体系CODCr的去除. 混凝作用(CODCr coag,UV254 coag)受氧化作用(CODCr oxid,UV254 oxid)的影响并与之拮抗,氧化作用越大混凝作用越小. 当c(H2O2)/c(Fe2+)>2时,氧化作用占优势;当c(H2O2)/c(Fe2+)<1.2时,混凝作用占主导. 当初始pH为4.0,c(H2O2)为240 mmol/L,c(Fe2+)为40 mmol/L,反应时间为2 h时,CODCr和UV254的氧化/混凝去除率比最大(φCODCr8.6,φ <sub>UV2546.0),CODCr,UV254,HA和FA去除率分别达到62.5%,78.2%,95.0%和62.7%.

     

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出版历程
  • 收稿日期:  2009-06-01
  • 修回日期:  2009-07-13
  • 刊出日期:  2010-01-25

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