Removal characteristics of dissolved organic matters in landfill leachate by combined process
- Received Date: 15/11/2009
- Accepted Date: 24/10/2009
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Key words:
- dissolved organic matters /
- humic acid /
- fulvic acid /
- hydrophilic
Abstract: SBR+coagultation +Fenton oxidation+biological aerated filter（BAF）, as a combinnation process, was used to treat landfill leachate. The treated effluent of each treatment process was analyzed, and the removal performance of dissolved organic matters (DOMs) such as humic acid (HA), fulvic acid (FA) and hydrophilic (HyI) fractions containning in leachate were investigated. The results showed that 98.4% of COD and 99.3% of NH3-N were removed，whereas 98.3%, 99.5%, 95.7% and 98.3% of HA,FA, HyI as DOMs were removed respectively in this combination process. SBR and coagulation process became predominating in removal of HA and HyI, and Fenton reagent has a favorable treatment efficiency of FA. Fenton oxidation process followed BAF could remove recalcitrant organic pollutants effectively,ensuring the effluent to satisfy with the GB16889-2008 discharge standard.
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