某造纸厂废水中二噁英含量及其电子束辐照降解  

Concentrations, Distribution Characteristics and Electron Beam Radiolysis Degradation of PCDD /Fs in Waste Water from a Paper Mill

作　　者：青宪[1] 黄锦琼 余小巍 张素坤[1] 杨艳艳[1] 任明忠[1] 温玉龙 

机构地区：[1]环境保护部华南环境科学研究所,国家二[口恶]英监测中心华南分中心,广州510655 [2]广州凯恒企业集团有限公司,广州510655

出　　处：《环境科学》2014年第7期2645-2649,共5页Environmental Science

基　　金：中央级公益性科研院所基本科研业务费专项(PM-ZX021-201211-137);国家高技术研究发展计划(863)项目(2011AA060605-03)

摘　　要：通过对造纸厂废水中2,3,7,8-PCDD/Fs的检测,分析了其在造纸厂废水中的浓度水平与特征,并将不同剂量电子束辐照前后废水中2,3,7,8-PCDD/Fs浓度水平进行对比,初步探讨了电子束辐照造纸废水中2,3,7,8-PCDD/Fs的可行性,降解机制以及降解率.结果表明,该造纸厂未经处理过的原水中2,3,7,8-PCDD/Fs浓度为239 pg·L-1,毒性当量浓度为41.0pg·L-1.通过用30 kGy和60 kGy剂量的电子束辐照处理后,废水中2,3,7,8-PCDD/Fs的浓度均有不同程度地降低,其降解率分别为5.27%和23.6%.Concentrations and distribution characteristics of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and dibenzofurans（ 2,3,7,8-PCDD/Fs） were analyzed in waste water from a paper mill. And concentrations of 2,3,7,8-PCDD/Fs in waste water before and after electron beam irradiation with different doses were compared. The feasibility,mechanism and rates of 2,3,7,8-PCDD /Fs degradation were discussed. The PCDD /Fs concentrations and corresponding I-TEQ（ toxic equivalent quantity） values were 239pg·L^- 1and 41. 0 pg·L^- 1,respectively,in the waste water. The concentrations of total 2,3,7,8-PCDD/Fs decreased after electron beam radiolysis at a dose of 30 kGy and 60 kGy with degradation rates of 5. 27% and 23. 6%,respectively.

关 键 词：造纸厂 废水 电子束辐照 二噁英 降解 

分 类 号：X703.1[环境科学与工程—环境工程]