2006年武汉市公共场所集中空调通风系统卫生状况分析

Hygienic Status of Ventilation Systems of Centralized Air Conditioners in Public places of Wuhan 2006

目的了解武汉市公共场所集中空调通风系统污染状况,为制定防治策略提供科学依据。方法对武汉市38家公共场所的集中空调通风系统进行采样,共检测164个出风口,38个冷却塔。检测的污染物指标为可吸入颗粒物(PM10)、送风口细菌总数、风管内表面积尘量、风管内表面细菌总数、嗜肺军团菌。结果164个出风口样品中,PM10、送风口细菌总数、风管内表面积尘量、风管内表面细菌总数4个指标均合格的占70.12%;38件冷却塔水样品中,嗜肺军团菌检出率为63.16%。结论武汉市公共场所集中空调通风系统仍存在一定的污染,应加强卫生监督和监测。

Objective In order to explore the contamination situation of ventilation systems of centralized air conditioners in public places of Wuhan and provide scientific basis for constituting preventive strategy. Methods 38 public places were taken out and sampled in Wuhan, which the detection indexes were inhalable particle matter （PM10）, total Count of germs of supply - air outlet, amount of dust particles from the inside surface of flue pipes, total count of germs from the inside surface of flue pipes, legionella pneumophila. 164 air outlets and 38 cooling towers were tested. Results Among 164 air outlets, qualified samples occupied 70. 12%. Legionella pneumophila was found in 63.16% water samples from 38 cooling towers. Conclusion There has been still some pollution in ventilation systems of centralized air conditioners in public places of Wuhan. Hygiene supervision and monitoring should be strengthened in Wuhan.