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目的了解军团菌在无锡某些水体中污染状况及时空分布,提供控制军团菌污染对策。方法2005—2008年采集477件公共场所空调冷却水、工艺性冷却水、太湖水、观赏娱乐水样,依据公共场所集中空调通风系统卫生规范附录A方法检测军团菌。结果2005—2008年,总军团菌检测阳性率为10.48%,工艺冷却水阳性率19.67%,公共场所冷却水阳性率15.13%。2005年公共场所和工艺性冷却水阳性率分别高达41.94%,33.33%。公共场所空调冷却水军团菌分布在5、6、7、8、9月份。工艺性冷却水冬季阳性率并不低。结论无锡市水样中军团菌总阳性率比周边城市低,主要分布在公共场所、企业工艺性冷却水、消防用水、安全洗眼器水中。2005年公共场所和工艺性冷却水军团菌阳性率最高。公共场所空调冷却水军团菌分布夏、秋季,冬季工艺性冷却水适合于军团菌生长。应根据不同情况,采取有效的管理措施。
Objective To understand the spatiotemporal distribution of Legionella in some water bodies in Wuxi and to provide control measures for Legionella contamination. Methods A total of 477 air-conditioned cooling water, process cooling water, Taihu Lake water and ornamental recreational water samples were collected from 2005 to 2008, and Legionella was detected according to appendix A of the Hygienic Standard for Air Conditioning and Ventilation Systems in Public Places. Results From 2005 to 2008, the detection rate of total Legionella was 10.48%, the positive rate of process cooling water was 19.67%, and the positive rate of cooling water in public places was 15.13%. In 2005, the positive rates of public places and process cooling water were as high as 41.94% and 33.33% respectively. Legionella in public places air-conditioning cooling water distribution in 5, 6, 7, 8, September. Technology cold water winter positive rate is not low. Conclusion The total positive rate of Legionella in water samples in Wuxi City is lower than that in the surrounding cities, mainly distributed in public places, corporate process cooling water, fire fighting water and safety eyewash water. The highest positive rate of Legionella in public places and process cooling water was in 2005. Legionella distribution of air conditioning cooling water in public places summer, autumn, winter, process cooling water for Legionella growth. Should be based on different circumstances, to take effective management measures.