Fenton-双泥SBR工艺深度处理难降解反渗透浓缩液
Intensive treatment of biorecalcitrant concentrated leachate effluent of reverse osmosis(RO) by Fenton-two sludge SBR system
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摘要: 采用Fenton试剂处理反渗透浓缩渗滤液（简称浓缩液），并探讨了双泥SBR工艺对Fenton处理后浓缩液与人工配水混合处理的可行性。结果表明，Fenton氧化对COD、TN和NH3-N的平均去除率分别为43.5%、22.5%和19.5%。对溶解性有机物(DOMs) 的去除率为52.5%，其中胡敏酸(HA)、富里酸(FA)和亲水性有机物(HyI)的去除率分别为57.9%、59.4%和21.1%。双泥SBR系统对Fenton处理后浓缩液与生活污水的混合液处理效果较好，对COD、NH3-N、TN和腐殖酸的平均去除率分别为85%，75%，70%和70%。Fenton氧化和SBR联用，能有效处理难生物降解的浓缩液。Abstract: The treatment of concentrated leachate rejected from reverse osmosis (RO) with Fenton reagent was investigated, and the feasibility of treating mixture of landfill leachate and synthetic wastewater was studied using two-sludge SBR systems. The results showed that the average removal efficiencies for COD, TN and NH3-N were 43.5%, 22.5% and 19.5%, respectively.The removal rates for dissolved organic materials (DOMs),humic acid(HA),fulvic acid(FA) and hydrophilic fraction were 52.5%，57.9%，59.4% and 21.1%,respectively. The two-sludge SBR system had a favorable treatment efficiency of mixture of liquids, and the average removal efficiencies for COD, NH3-N, TN and humic substances were 85%，75%，70% and 70%， respectively. The combined advanced treatment of Fenton oxidation process followed two-sludge SBR could effectively treat bio-refractory contaminants in concentrated leachate.
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Key words:
- Fenton’s reagent /
- two-sludge system /
- concentrated leachate
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