北京市不同方式集中空调通风系统微生物污染检测和分析

A detection and analysis on microbial contamination in central air conditioning system in Beijing

目的:调查分析北京市公共场所不同方式集中空调通风系统细菌总数及真菌总数污染状况,为集中空调的卫生管理提供技术支持和理论依据。方法:在2009年3月～5月间随机抽取北京市4星级以上宾馆的11套不同方式集中空调通风系统,进行细菌总数和真菌总数微生物污染检测与分析。结果:全空气空调系统中细菌总数合格率为88.5%,真菌总数合格率为90.4%;空气-水式空调系统中细菌总数合格率为85.9%,真菌总数合格率为72.9%。在全空气式空调系统和空气-水式空调系统之间,细菌总数有明显差异;真菌总数无明显差异。结论:北京市公共场所不同方式集中空调通风系统微生物污染状况不同,有其各自的污染特点;应采取针对性预防控制措施,科学有效的进行集中空调卫生管理。

Objective：To provide technical support and theoretical basis for health management of central air conditioning system,we investigated and analyzed contamination of the total number of bacteria and total fungal in different ways of central air conditioning system in public places in Beijing.Methods：In March to May 2009,11 sets of different ways of central air conditioning systems in many hotels in Beijing were randomly selected to detect and analyze the contamination of the total number of bacteria and total fungi.Results：In all air system,the pass rate of total number of bacteria is 88.5%,the pass rate of total fungi is 90.4%;In air-water way central air conditioning system,the pass rate of total number of bacteria is 85.9%,the pass rate of total fungi is 72.9%.Between all air system and air-water way central air conditioning system,the different of total number of bacteria is significant;but the different of total fungi is not significant.Conclusion：In Beijing,the microbial contamination in different ways of central air conditioning system is different in Public places,each have their own pollution characteristics;Targeted prevention and control measures should be taken to manage central air conditioning system more scientifically and effectively.