Fenton氧化法预处理并提高垃圾渗沥液可生化性的研究  

Improved biodegradability of landfill leachate by pre-treatment with Fenton oxidation process

作　　者：肖惠群 顾早立 陶智伟[1] 叶标[1] 夏四清[1] 

机构地区：[1]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

出　　处：《环境科学学报》2015年第12期3937-3942,共6页Acta Scientiae Circumstantiae

基　　金：国家科技支撑计划(No.2013BAD21B03)~~

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、H_2O_2投加量和[H_2O_2]/[Fe^(2+)]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.Fenton process was used during the pretreatment of landfill leachate. Response surface methodology （RSM） was applied to evaluate the effects of initial pH, H202 dosage, H2 O2/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 leaehate after Fenton treatment, which might improve the performance of followed biological treatment processes.

关 键 词：垃圾渗沥液 FENTON 响应面法 可生化性 

分 类 号：X705[环境科学与工程—环境工程]