空调冷却塔气溶胶中军团菌分离的杂菌控制研究  

Studies on controlling of mixed-bacteria in legionella separation of aerosols from cooling towers in center air conditioning system in public places

作　　者：赵志荣[1] 施明美[2] 

机构地区：[1]安徽省马鞍山市疾病预防控制中心,安徽马鞍山243000 [2]马鞍山十七冶医院

出　　处：《现代预防医学》2012年第11期2669-2671,共3页Modern Preventive Medicine

基　　金：安徽省卫生厅2009年医学科研立项课题(09C195)

摘　　要：目的探讨冷却塔气溶胶中军团菌分离过程中的杂菌控制方法。方法冷却塔运行不同时间采用生物气溶胶采样器收集不同容积气溶胶样品,在不同时间段分别采用酸处理、热处理及稀释处理等方法控制杂菌。结果冷却塔运行初期,杂菌可控率在80%以上,空气采集容积在800 L以内的杂菌可控率为85.0%;在冷却塔运行﹥120 d时间段,稀释处理的杂菌可控率81.8%,空气采集容积在1 500 L以内的杂菌可控率100%;样品留置﹥15 d后,在冷却塔运行的各个时间段,用各种处理方法的杂菌可控率均为0。结论样品采集后应及时处理,并且随着冷却塔运行时间的延长,除常规酸、热处理外,应增加稀释处理。OBJECTIVE To investigate controlling methods of mixed-bacteria in legionella separation of aerosols samples from cooling towers.METHODS Different volumes of aerosols were obtained by microbial aerosol sample collector in different time during cooling towers running,mixed-bacteria were controlled during different intervals by acid treatment,heat treatment and dilute treatment.RESULTS In the initial stage,the controlling rate of mixed-bacteria was more than 80%,and the controlling rate of mixed-bacteria was 85% in less than 800 L for air collection.During 120 days of cooling towers running,the controlling rate of mixed-bacteria was 81.8%,and the rate was 100% in less than 1 500 L for air collection.When samples were detained 15 days or more,the rate was zero.CONCLUSION Collected samples should be immediately treated,and besides acid or heat treatment,it should add dilute treatment along with longer running time of cooling tower.

关 键 词：气溶胶 军团菌 杂菌 控制 

分 类 号：R37[医药卫生—病原生物学]