紫外线和氯组合方式对大肠杆菌灭活效果的影响研究  

Influence of Different Combination Modes of UV and Chlorine on Inactivation Effect of Escherichia Coli

作　　者：郭美婷[1] 胡洪营[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《中国给水排水》2007年第17期80-83,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(20477021);国家自然科学基金-JST重大国际合作资助项目(20510076)

摘　　要：系统地比较了紫外线和氯不同的组合方式对大肠杆菌的灭活效果。结果表明,紫外线和氯联合顺序消毒在一定程度上提高了消毒效果,但不同的组合方式以及两者不同的剂量对灭活效果都有影响。紫外线和氯先后作用的消毒效果优于紫外线和氯同时消毒。先氯后紫外线消毒时,加较高浓度的氯且短时间接触即可达到较好的消毒效果;先紫外线后氯消毒时,氯剂量越大则灭活率越高,若氯浓度相同而接触时间不同,则灭活效果差别不大。The inactivation effect of E. coli with different combination modes of UV and chlorine was compared. The result shows that the combination of UV and chlorine can improve the inactivation effect. However, different combination modes and different doses of UV and chlorine affect the inactivation effect. Simultaneous disinfection with UV and chlorine has lower effect than sequential disinfection. During disinfection with chlorine followed by UV, addition of high-concentration chlorine with short contact time has better disinfection efficiency. During disinfection with UV followed by chlorine, high chlorine dose has high inactivation rate. When the chlorine concentration is the same and the contact time is different, the difference of inactivation effect is not significant.

关 键 词：紫外线 氯 消毒 组合方式 灭活效果 

分 类 号：R187[医药卫生—流行病学]