H_2O_2/O_3体系处理反渗透浓缩垃圾渗滤液  

Degradation of concentrated landfill leachate rejected by reverse osmosis in H_2O_2/O_3 system

作　　者：郑可[1] 周少奇[1,2,3] 杨梅梅[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640 [3]广东省教育厅环境保护与生态修复重点实验室,广东广州510006

出　　处：《化工进展》2011年第11期2540-2544,共5页Chemical Industry and Engineering Progress

基　　金：十一五国家科技支撑计划(2008BAE64B05);广州市重大科技项目(2008DLB2080500)

摘　　要：采用H2O2/O3体系处理经反渗透膜处理后的浓缩垃圾渗滤液,比较了H2O2/O3体系和单独H2O2和单独O3处理浓缩液;并考察了体系初始pH值、O3投量、H2O2投量对H2O2/O3体系降解浓缩液的色度、腐殖酸以及COD的去除的影响;以及考察了H2O2/O3体系对浓缩液中大分子的胡敏酸(HA)以及中等分子量的富里酸(FA)的去除,并通过E250/E365(E2/E3)和E240/E420(E2/E4)的变化表征腐殖酸的腐殖度的变化。结果表明:H2O2/O3体系的处理效果远好于单独H2O2和单独O3处理;在pH值为8.0、O3投量为5.02 g/h、H2O2投量为90 mmol/L、反应时间为30 min时,H2O2/O3体系处理浓缩液的色度、腐殖酸和COD的去除率分别达到97.72%、88.85%和74.54%;O3/H2O2氧化体系对HA的去除率高于FA,且经过O3/H2O2氧化体系处理后浓缩液中腐殖酸分子量降低,腐殖化程度降低。Concentrated landfill leachate rejected by reverse osmosis（RO）was oxidized in H2O2/O3 system.Performances of H2O2/O3 oxidation,H2O2oxidation and O3 oxidation were compared.The effects of initial pH,O3 dosage and H2O2 dosage on the removal of color,humic substances and COD were investigated.And the degradation of humic acid（HA）and fulvic acid（FA）were studied,E250/E365（E2/E3）and E240/E420（E2/E4）were used to evaluate the degree of humification.The results demonstrated that for the removal efficiencies of color,humic substances and COD were achieved 97.72%,88.85% and 74.54% respectively at initial pH 8.0,O3 dosage 5.02 g/L,H2O2 dosage 90 mmol/L,reaction time 30 min.The removal efficiency of HA was obviously higher than that’s of FA,and the degree of humification was reduced.

关 键 词：腐殖酸 臭氧 过氧化氢 渗滤液 反渗透 

分 类 号：X703.1[环境科学与工程—环境工程]