某购物中心集中空调通风系统卫生状况监测与评价

Investigation on Sanitary Condition of Central Heating Ventilation and Air-Conditioning Systems in the Shopping Mall

目的调查某购物中心集中空调通风系统污染现状,为加强其卫生管理提供技术依据。方法抽取某购物中心2套(商场和超市)集中空调通风管道系统,对新风量、风管积尘量、微生物指标、可吸入颗粒物(PM10)等进行检测。结果超市肉食区送风中细菌总数为515 cfu/m3,新风量为13 m3/(h.人),不符合卫生规范的要求,其他指标均符合卫生要求;检测商场空调的各项指标均符合卫生要求。结论该购物中心通风系统存在送风中细菌总数超标和新风量不足的问题,应加强对空调通风系统的管理,加大通风量,定期对空调通风系统进行清洗和消毒。

Objective To find out the current sanitary condition of central heating ventilation and air-conditioning systems（HVAC） in a shopping mall,supply technical basis for strengthening the sanitary management of HVAC systems.Methods Hygiene detection was carried out on two sets of systems selected in the shopping mall.The indexes included the volume of fresh air,the weight of dust on the surface of the pipe,the microbial indexes and the inhaled particles（PM10）.Results The total count of bacteria in the meat processing area of the supermarket on the third floor was 515 cfu/m3,exceeding the national limits;the volume of fresh air of the meat processing area was 13 m3/h·person,which was lower than the national limits,the other indexes met with the hygienic standards.All the indexes were in accordance with the national standards on the first floor of the shopping mall.Conclusion It is essential to strengthen the management,clean and disinfect the HVAC systems periodically.