真空紫外光解二氯甲烷特性研究  

Study on DCM photolysis by VUV

作　　者：魏莹莹[1] 孙鹏飞[1] 孙永强 蒋轶锋[1] 於建明[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310032 [2]杭州澄天环保工程有限公司,浙江杭州310007

出　　处：《浙江工业大学学报》2012年第4期414-417,共4页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(20976165)

摘　　要：采用波长为185 nm真空紫外灯,对废气中二氯甲烷进行光解.分别设计了两种不同结构的光解反应器,通过对湿度、停留时间和进气质量浓度的不同工艺参数的考察来比较两种反应器的光解效率及反应机理.结果表明螺旋形反应器具有较高的去除效率但不利于工业放大,直接光解、光激发氧化是真空紫外去除二氯甲烷的主要作用机制.In this study, vacuum UV with main-length of 185 nm was employed for the photolysis of DCM in waste gas. Different parameters of humility, residence time and inlet concentration were examined to investigate their effects on the DCM removal efficiency in two reactors with different structures. The spiral reactor showed a higher average COD removal efficiency than the U-type reactor, however, is difficult to scale up for industrial application. Direct photolysis and indirect photo-oxidation by the induced ozone and . OH were the main oxidative forms for DCM degradation.

关 键 词：二氯甲烷(DCM) 真空紫外(VUV) 光解 

分 类 号：X703.1[环境科学与工程—环境工程]