南宁市星级宾馆集中空调通风系统卫生学调查

Air Quality of Ventilation Systems of Centralized Air-Conditioners in Star Grade Hotels in Nanning

目的研究南宁市星级宾馆集中空调通风系统污染状况,为卫生管理提供依据。方法于2006年8—9月随机抽取南宁市6户三星级以上宾馆的集中空调通风系统进行卫生调查,检测空调送风中可吸入颗粒物、细菌总数、真菌总数,风管内表面积尘量、细菌总数、真菌总数,冷却塔水中军团菌。结果空调送风中细菌总数污染较严重,超标率达66.7%(4/6),真菌总数超标率为33.3%(2/6),可吸入颗粒物超标率为16.7%(1/6);风管内表面积尘量较高,均值达46.33g/m2,超标率为83.3%(5/6),真菌总数超标率为100%(6/6),最高值超标145.3倍,细菌总数超标率为16.7%(1/6);采集6份冷却塔水样,有1份检出Ⅰ型嗜肺军团菌。结论星级宾馆集中空调通风系统清洗消毒不彻底,微生物污染较严重,应加强卫生管理。

Objective To investigate the pollution situation of ventilation systems of centralized air-conditioners in public areas and to present the data for hygiene management. Methods 20 ventilating systems of air-conditioners from six 3-star or above hotels in Nanning were selected randomly and the hygienic inspection on these samples was performed including the indexes of PM10, aerobic bacterial count, aerobic molds count, dust capacity of inner-wind duct surface and microbial as well as the legionella in cooling...