2011年济宁市城区公共场所集中空调通风系统卫生状况调查

Survey on Hygienic Status of Centralized Air Ventilation System in Public Places of Urban Area,Jining City,2011

[目的]了解济宁市公共场所集中空调通风系统的卫生状况,为改善公共场所的卫生状况、加强公共场所卫生监管工作提供决策依据。[方法]2011年5～7月,在济宁市城区抽取28家使用集中空调通风系统的机关、公共场所进行现场卫生学调查与积尘中微生物检测。[结果]调查15家公共场所单位,均建立健全了卫生组织与管理制度;集中空调新风口位置符合卫生要求的占66.67%,在空调的风管系统安装了供监督检测、清洗消毒用窗口的占60.00%,安装了空气净化消毒装置的占20.00%;空调系统冷凝水能够集中排放,排水管道无堵塞的占86.67%;空调房间内的送、回风口能够经常性清洗,保持风口表面无积尘霉斑的占26.67%。检测管道积尘172份,积尘量均值69.43g/m2,合格率为69.19%;细菌总数均值为2 249CFU/cm2,合格率为43.60%;真菌总数均值为3 494CFU/cm2,合格率为27.91%;军团菌均未检出。不同单位细菌总数、真菌总数的差异均有统计学意义(P<0.01)。[结论]济宁市城区公共场所集中空调通风系统的卫生状况较差。

[Objective]To understand sanitary condition of the centralized air ventilation system in public places,so as to provide basis for strengthening health supervision.[Methods]By random sampling,28 samples of central air conditioning ventilation system authority and public places were collected for hygienic survey and testing dust microorganism during May-July,2011.[Results]In 15 public places,the health organization and management system were established.The central air conditioning fresh air inlet position meeting the hygienic requirements accounted for 66.67%,the system installed with window for supervision and inspection,cleaning and disinfection n the air-conditioning duct accounted for 60.00%,installed with air purification and disinfection equipment accounted for 20.00%;the condensed water air conditioning system to concentrate discharge,drainage pipeline without plug accounted for 86.67%;sending,returning air regular cleaning air conditioning room,keep the tuyere surface no dust mildew accounted for 26.67%.In detection of 172 samples of pipeline dust,the mean dust value was 69.43 g/m2,the qualified rate was 69.19%;the total count of bacteria average is 2 249 CFU'cm2,the qualified rate is 43.60%;total fungi average was 3 494 C FU/cm2,the qualified rate was 27.91%;No Legionella was detected(P<0.01).[Conclusion]The sanitary condition of the centralized air ventilation system is worse in public places of urban area in Jining city.