Oxidation and coagulation of humic substances from landfill leachate by Fenton<sup>,</sup>s reagent

WU Yanyu; ZHOU Shaoqi; QIN Fanghui; LAI Yanglan; PENG Huaping

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Oxidation and coagulation of humic substances from landfill leachate by Fenton^,s reagent

更新时间：2025-12-10

- Oxidation and coagulation of humic substances from landfill leachate by Fenton^,s reagent
- CIESC Journal Issue 10, Pages: 2609-2613(2009)
- 作者机构：
  
  华南理工大学环境科学与工程学院
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- Online First：05 October 2009，
  
  Published：05 October 2009
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WU Yanyu, ZHOU Shaoqi, QIN Fanghui, et al. Oxidation and coagulation of humic substances from landfill leachate by Fenton^,s reagent[J]. CIESC Journal, 2009, (10): 2609-2613.
DOI：

WU Yanyu, ZHOU Shaoqi, QIN Fanghui, et al. Oxidation and coagulation of humic substances from landfill leachate by Fenton^,s reagent[J]. CIESC Journal, 2009, (10): 2609-2613. DOI：

摘要

采用Fenton试剂处理反渗透浓缩垃圾渗滤液，通过COD，TOC，UV254以及COD/TOC等表征手段考察氧化/混凝作用对COD和腐殖质去除效果的影响。结果表明，Fenton试剂对浓缩渗滤液中腐殖质去除（11.9 % ~ 89.5 %）高于总COD去除（9.6 % ~ 75.2 %）；渗滤液中腐殖质降解和COD去除具有较好的相关性。混凝作用（CODcoag，HScoag）受氧化作用（CODoxid，HSoxid）的影响并与之相反，氧化作用越大，混凝作用越小。(COD/TOC)oxid变化表明，在[H2O2]>80 mmol.L-1，pH=2.0~4.0， [Fe 2+ ]=40~160 mmol.L-1，反应时间2 h的实验条件下，渗滤液中有完全氧化过程发生，同时(COD/TOC)coag的变化说明经混凝作用去除的有机物氧化态高于其它实验区间。

Abstract

The experiments focused on the Fenton treatment of humic substances (HS) in concentrated landfill leachate rejected by reverse osmosis (RO).The changes in dissolved organic matter by oxidation/coagulation were assessed by using gross organic parameters such as chemical oxygen demand (COD)

total organic carbon (TOC)

UV254 and COD/TOC molar ratio during the treatment with Fenton reagent.The results demonstrated that the humic substances removal efficiency (from 119% to 895%) was higher than that of COD (from 9.6% to 75.2%) and there was a good correlation between humic substances degradation and COD removal.This study showed that the oxidation efficiency controlled the coagulation efficiency

so high oxidation efficiency may cause relatively low coagulation.The change of (COD/TOC)oxid indicated that the oxidation reaction was ultimate degradation under the condition of pH= 20—40

［H2O2］>80 mmol.L-1

［Fe2+ ］= 40—160 mmol.L-1

reaction time 2h.The changes of (COD/TOC)coag illustrated that the oxidation state of the organic matter removed by coagulation was significantly higher than in the fresh landfill leachate under the above reaction conditions.

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Oxidation and coagulation of humic substances from landfill leachate by Fenton,s reagent

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Oxidation and coagulation of humic substances from landfill leachate by Fenton^,s reagent