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目的了解大连市公共场所集中空调通风系统污染状况。方法2008年6-7月,依据《公共场所集中空调通风系统卫生规范》(卫监督发〔2006〕58号)的要求,随机抽取大连市14家公共场所(其中宾馆7家、大型超市6家、游泳馆1家),检测集中空调通风系统中的管道积尘量及积尘中的细菌总数,真菌总数,送风空气中的可吸入颗粒物、细菌总数、真菌总数;同时采集冷却塔中冷却水500 ml,检测冷却水中的嗜肺军团菌。结果集中空调通风系统管道内的积尘量和积尘中的细菌总数、真菌总数合格率分别为64.29%、97.10%、97.10%;送风空气中的可吸入颗粒物、细菌总数、真菌总数的合格率分别为57.14%、46.97%、71.21%;冷却水中的嗜肺军团菌检出率为27.3%。结论大连市公共场所集中空调通风系统存在一定程度的污染。
Objective To understand the pollution of central air conditioning and ventilation system in public places in Dalian. Methods From June to July 2008, 14 public places in Dalian (including 7 hotels and 6 large supermarkets) were randomly selected according to the requirements of Health Code for Central Ventilation and Ventilation System in Public Places (Wei Jian Guo Fa [2006] No. 58) , Swimming pool 1), detection of central air conditioning and ventilation system in the amount of dust in the pipe and dust accumulation in the total number of bacteria, the total number of fungi, air supply inhalable particles, the total number of bacteria, the total number of fungi; while cooling tower cooling Water 500 ml, detection of Legionella pneumophila in cooling water. Results The total amount of bacteria and the total number of bacteria and the total number of fungi in the pipeline of air-conditioning and ventilation system were 64.29%, 97.10% and 97.10%, respectively; the inhalable particulates, the total number of bacteria and the total number of fungi The rates were 57.14%, 46.97% and 71.21% respectively. The detection rate of Legionella pneumophila in cooling water was 27.3%. Conclusion There is a certain degree of pollution in the centralized air conditioning and ventilation system in public places in Dalian.