北京市朝阳区地铁车站内集中空调通风系统嗜肺军团菌污染状况调查研究

Investigation and study on hygienic conditions of centralized air conditioning and ventilation system of metro stations in Chaoyang District, Beijing

目的了解北京市朝阳区地铁集中空调通风系统嗜肺军团菌污染状况,分析地铁集中空调系统的监管现状,为规范地铁集中空调的管理提供依据。方法从北京市朝阳区运行的地铁线路中随机选择了40个地铁车站,检测车站内集中空调冷却水、冷凝水中的嗜肺军团菌。结果40个地铁车站的集中空调内,冷却水中嗜肺军团菌阳性比例为15.00%,冷凝水中嗜肺军团菌的阳性比例为12.50%。结论北京市朝阳区地铁集中空调通风系统存在一定程度的安全隐患,但是目前地铁集中空调的监管处于空白的状态,应通过建立健全法律法规、标准、规范和推进行业自律加强对地铁集中空调的管理。

Objective To know the pollution condition of Legionella pneumophila of central air-conditioning ventilation system in subway, to analyze the current regulatory status of subway central air-conditioning system, and to provide basis for regulating the management of subway central air-conditioning systems. Methods 40 subway stations were randomly selected from the subway lines running in Chaoyang District of Beijing, to detect Legionella pneumophila in the cooling water and condensing water in the central air conditioning of subway station. Results The positive proportion of Legionella pneumophila in cooling water was 15.00% in the central air-conditioning system of 40 subway stations, and the positive proportion of Legionella pneumophila in condensing water was 12.50%. Conclusion There was a certain degree of safety hazard in the central air-conditioning ventilation system of subway. However, the supervision of central air-conditioning system in subway was still at a standstill. The management of central air-conditioning system in subway should be strengthened through the establishment of laws and regulations, standards, specifications, and promotion of industry self-discipline.