光波辐射对生活污水中大肠杆菌的灭杀效果  

Inactivation Efficiency of E. coli in Domestic Sewage by Ultraviolet Light Radiation

作　　者：施银桃[1,2] 夏东升[1] 曾庆福[1] 陈向昌[1] 

机构地区：[1]武汉科技学院环境与城建学院,湖北武汉430073 [2]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《中国给水排水》2010年第7期71-73,共3页China Water & Wastewater

基　　金：武汉市科技局引导计划项目(20066009138-07);湖北省教育厅科学技术研究项目(Q20091702)

摘　　要：分别采用微波无极紫外光(MUL)和普通紫外光(CUL)灭杀模拟生活污水和校园污水处理站二沉池出水中的大肠杆菌,考察了MUL、CUL对大肠杆菌的灭杀效果。结果表明:MUL的杀菌效果略好于CUL,模拟生活污水经MUL与CUL照射0.5 min后,杀菌率分别达到83.57%和69.29%,照射1 min后,杀菌率分别达到99.07%和98.36%;二级出水经MUL与CUL照射0.5min后,杀菌率分别为88.64%和72.73%,照射1 min后,杀菌率分别为97.95%和95.50%。采用MUL能更有效地抑制大肠杆菌的光复活。Microwave electrodeless ultraviolet light （MUL） and conventional ultraviolet light （CUL） were used for inactivation of E. coli in simulated and actual domestic sewage. The results show that the sterilization efficiency of MUL is slightly better than that of CUL. For the simulated sewage, the sterilization rates of MUL and CUL are 83.57% and 69.29% respectively after radiation of 0.5 rain, and 99.07% and 98.36% respectively after radiation of 1 rain. For the actual domestic sewage, namely seeondary effluent from a campus sewage treatment station, the sterilization rates of MUL and CUL are 88.64% and 72.73% respectively after radiation of 0.5 rain, and 97.95% and 95.50% respectively after radiation of 1 min. Photoreactivation of E. coli can be more effectively controlled by MUL.

关 键 词：大肠杆菌 微波无极紫外光 杀菌率 光复活 

分 类 号：X703[环境科学与工程—环境工程]