• 关键词：垃圾渗沥液  Fenton  响应面法  可生化性

• 基金项目：国家科技支撑计划(No.2013BAD21B03)

• 肖惠群
• 污染控制与资源化研究国家重点实验室, 同济大学环境科学与工程学院, 上海 200092

• 顾早立
• 污染控制与资源化研究国家重点实验室, 同济大学环境科学与工程学院, 上海 200092

• 陶智伟
• 污染控制与资源化研究国家重点实验室, 同济大学环境科学与工程学院, 上海 200092

• 叶标
• 污染控制与资源化研究国家重点实验室, 同济大学环境科学与工程学院, 上海 200092

• 夏四清
• 污染控制与资源化研究国家重点实验室, 同济大学环境科学与工程学院, 上海 200092

• 摘要：采用Fenton氧化法对垃圾渗沥液进行预处理.基于响应面法研究了Fenton氧化法对垃圾渗沥液的处理效能,考察了初始pH值、H₂O₂投加量和[H₂O₂]/[Fe²⁺]摩尔比对TOC去除率的影响,并拟合了TOC去除率与三因素之间的回归方程.同时,通过三维荧光和凝胶色谱比较了Fenton处理前后渗沥液的可生化性.结果发现,渗沥液中类富里酸等难降解有机物得到有效去除,B/C比从0.1左右升至0.25.研究表明,Fenton氧化法可有效改善垃圾渗沥液的可生化性,为后续生物处理创造了条件.

• Abstract：Fenton process was used during the pretreatment of landfill leachate. Response surface methodology (RSM) was applied to evaluate the effects of initial pH, H₂O₂ dosage, H₂O₂/Fe²⁺ molar ratio on total organic carbon (TOC) removal rate. A regression model was then developed. The discrepancy of biodegradability of the leachate before and after Fenton treatment was compared by using three-dimensional fluorescence spectrum and gel permeation chromatography (GPC). The results showed that some refractory organics like fulvic acid could be effectively removed by Fenton process, with the BOD/COD (B/C) ratio increased from around 0.1 to 0.25. Overall, the results demonstrate improved biodegradability of landfill leachate after Fenton treatment, which might improve the performance of followed biological treatment processes.

• Key words：landfill leachate  Fenton process  response surface methodology  biodegradability

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