杭州市某区星级宾馆集中空调通风系统卫生状况调查

目的了解杭州市某区星级宾馆集中空调通风系统污染状况,为卫生管理提供科学依据。方法采用现场采样和检测方法,于2008-2011年每年夏秋季对某区三至五星级宾馆集中空调通风系统进行卫生学调查。结果该区星级宾馆房间室内空气中细菌总数平均超标率为5.6%,二氧化碳平均超标率到50.8%;集中空调送风中细菌总数平均超标率达到58.5%,真菌总数超标率也达到27.7%。该区星级宾馆集中空调系统冷却水和冷凝水中嗜肺军团杆菌平均检出率分别为42.2%和26.7%。结论该区星级宾馆空调通风系统卫生质量重要指标合格率偏低,嗜肺军团杆菌检出率较高,存在传播感染的风险。

SURVEY ON SANITARY CONDITIONS OF THE VENTILATION SYSTEM OF CENTRAL AIR CONDITIONING SYSTEM IN THE STAR HOTELS IN A DISTRICT OF HANGZHOU

Objective To understand the pollution of central air conditioning and ventilation systems in star hotels in a district of Hangzhou so as to provide the scientific basis for health management.Methods Field sampling and detection methods were used to do hygiene investigation of central air conditioning system in summer and autumn each year of three to five-star hotels in the district.Results The indoor air of the star-hotel rooms in the district was detected.The exceeded rate of average total number of bacteria was 5.6%;the exceeded rate of average carbon dioxide was 50.8%;the exceeded rate of total number of bacteria in the central air-conditioned air supply was 58.5%,the exceeded rate of total number of fungal was 27.7%.The average detection rates of legionella pneumophila in cooling water and condensate water of central air conditioning system were 42.2% and 26.7% respectively.Conclusion The pass rates of the important indicators of the sanitary quality of the air conditioning and ventilation systems of the star-hotel in the district are low.The detection rates of legionella pneumophila are high,so risks of infection spreading exist.