中央空调冷却塔水军团菌生态特征实验研究

Experimental study on ecological characteristic of legionella in cooling tower water

目的:探索中央空调冷却塔水军团菌生态学特征,为制定军团菌消毒措施提供依据。方法:采用常规分离培养方法,对实验室模拟水样中的军团菌生态特征进行实验研究。结果:实验室模拟水样中军团菌的消长与温度关系明显,在35℃左右达到高峰;在水温到20℃以下时,模拟水样中不能检出军团菌,但实验装置玻璃缸壁生物膜上仍能检出军团菌。结论:实验室模拟水样中军团菌消长与温度关系明显,生物膜为军团菌躲避不利环境提供庇护场所。

Objective： To learn the ecologic characters of Legionella in cooling tower water of central air - conditioning system, and provide evidence and information for Legionella disinfection. Methods： Experimental study on ecological characteristic of Leg/- onella in cooling tower water was carried out through the methods of routine culture. Results ：The quantity of Legionella in experi- mental simulation water has a significant association with water temperature. The quantity of Legionella reached its peak when the water temperature got to about 35℃. However, Legionella could not be detected when the temperature dropped below 20℃, but it could be detected in bio - film. Conclusion： The growth of Legionella in experimental simulation water has clear relationship with water temperature and biofilm provide safe - room for Legionella to live through.