中山市2006～2008年集中空调通风系统监测结果分析

Results of hygienic monitoring of centralized air conditioner ventilating system in Zhongshan from 2006 to 2008

目的了解中山市商场和酒店集中空调通风系统的污染现状,为卫生管理提供理论依据。方法随机抽取中山市具有集中空调系统的商场23间,酒店22间,每间场所对3个回风口、3个送风口和冷却塔采样。结果商场和酒店管道积尘的合格率均为100%,管道积尘的细菌总数和真菌总数的合格率较低,商场的细菌总数和真菌总数合格率均显著低于酒店(P<0.01);空调送风中PM10合格率均为100%,细菌总数合格率分别为62.3%和66.7%;商场和酒店空气中PM10合格率均为100%,细菌总数合格率分别为98.6%和90.9%;冷却水嗜肺军团菌的检出率为98.2%。结论集中空调系统的污染程度不一,商场的污染状况严重于酒店,在监督监测过程中应着重加强对商场的监管力度。

Objective To understand the hygienic conditions of centralized air conditioner ventilating system in Zhongshan City. Methods The 22 shops and 23 hotels with central air condition system were randomly selected for the study ,and every place with 3 return air vents, 3 carrying air vents and Legionella in cooling tower water were sampled. Results The qualification rate of pipeline dust was 100%. The bacteria and fungus of pipeline dust was lower,and the qualification rate of shops was significantly lower than hotels （P〈0.01）. The qualification rate of PM10 coming from carrying air vents was 100%. The qualification rate of PM10 in the air was 100%,and that of total bacteria were 98.6% and 90.9%. The detection rate of legionella in the cooling tower water was 98.2%. Conclusions The status of pollution of centralized air conditioner ventilating system in shops and hotels varies and effective monitoring of contamination conditions in this district be strengthened.