宁波市公共场所集中空调通风系统卫生状况调查

Hygienic situation of heating-ventilating-air conditioning systems in public place of Ningbo

目的:了解宁波市公共场所集中空调通风系统卫生质量现状。方法:选择宁波市20家公共场所,依照《公共场所集中空调通风系统卫生规范》,对其进行采样、检测及评价。结果:20家公共场所集中空调通风系统新风量的合格率为85%,送风中PM10、细菌总数、真菌总数合格率分别为55%,50%,45%,所有被测定公共场所集中空调通风系统均未检出副溶血性链球菌及军团菌。风管表面积尘量、细菌总数、真菌总数的合格率分别为100%,100%,30%。经检验,宁波市空调系统新风量、风管表面积尘量、风管表面细菌总数符合国家规范,真菌总数不符合国家标准。结论:宁波市公共场所集中空调通风系统存在一定程度的污染。

Objective：To know the contamination situation of the centralized air conditioning systems in public places in Ningbo.Methods： 20 public places in Ningbo were selected for sampling,detection and evaluation in accordance with Health Standards for Central Air Conditioning Ventilation System in Public Places.Results： The eligible rate of fresh air is 85%,and the eligible rates of inhalable particle matters,total count of bacteria and fungi in air blow are 55%,50%,45% respectively.β-hemolytic Streptococcus and Legionnella were not found in any of the detected places.The eligible rate of dust volume,the total count of bacteria and fungi in internal surface of pipes are 100%,100%,30%.Statistical tests show that fresh air,dust volume,the total count of bacteria in internal surface of pipes conform to national standards.But the total count of fungi in internal surface of pipes is significantly higher than the standard.Conclusion： There is a certain degree of contamination in central air conditioning system in Ningbo.