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.
出处
《环境科学学报》
CAS
CSCD
北大核心
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)~~
关键词
垃圾渗沥液
FENTON
响应面法
可生化性
landfill leachate
Feuton process
response surface methodology
biodegradability
