微波无极紫外光对自来水中微生物的灭活作用  

INACTIVATION OF MICROBE IN RUNNING WATER USING MICROWAVE ELECTRODELESS ULTRAVIOLET LIGHT

作　　者：楼朝刚[1] 夏东升[1] 赵帆[1] 吕继良[1] 曾庆福[1] 

机构地区：[1]武汉科技学院环境与城市建设学院,湖北武汉430073

出　　处：《环境工程》2008年第3期10-12,共3页Environmental Engineering

基　　金：武汉市科技局引导计划项目(20066009138-07)

摘　　要：选取大肠杆菌和枯草芽孢杆菌分别代表自来水中易被灭活和不易被灭活的微生物,研究了微波无极紫外光最佳杀菌效果的极限浊度和照射时间。在此条件下,考察了自来水中大肠杆菌和枯草芽孢杆菌杀灭情况,并与普通中压汞灯进行比较。结果表明:最佳照射时间为210s,微波无极紫外光杀菌率高达99.92%;为了获得最佳的杀菌效果,原水浊度应<8NTU,杀菌的极限浊度为40NTU;微波无极紫外光在180s时,对大肠杆菌的杀菌率达到100%;在300s时,对枯草芽孢杆菌的杀菌率达到100%,明显高于普通中压汞灯产生的紫外线杀菌效果。E.coli and Bacillus subtilis were selected to express respectively the easily and difficultly inactivated microbe,and the best irradiation time and the limit turbidity of microwave electrodeless ultraviolet(UV)irradiation were studied.In this condition,checking the disinfection of E.coli and Bacillus subtilis,and compared with mercury lamp of medium pressure.The results showed that when best irradiation time was 210 s,microwave electrodeless ultraviolet irradiation can achieve inactivation rate of 99.92%.In order to obtain the best results of disinfection effect,the water of turbidity was below 8 NTU,the limit turbidity of disinfection was 40 NTU;microwave electrodeless ultraviolet irradiation can achieve inactivation rate of 100% with 180 s,and the Bacillus subtilis inactivation rate of 100% with 300 s,it is more effective than mercury lamp of medium pressure disinfection.

关 键 词：大肠杆菌 枯草芽孢杆菌 极限浊度 自来水 杀菌效果 无极紫外灯 

分 类 号：X703[环境科学与工程—环境工程] S852.65[农业科学—基础兽医学]