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目的了解深圳市部分公共场所集中空调通风管道的污染状况,为提出合理控制措施提供依据。方法抽查深圳市长期使用集中空调通风系统的11家公共场所,对风管内表面的积尘量、细菌总数、真菌总数以及β-溶血性链球菌进行采样检测。结果所抽取的公共场所集中空调通风风管内表面积尘量合格率为69.0%,细菌总数合格率为100.0%,真菌总数合格率为100.0%,β-溶血性链球菌合格率为100.0%。结论公共场所集中空调通风系统存在卫生安全问题,应加强卫生管理。
Objective To understand the pollution status of central air conditioning ventilation ducts in some public places in Shenzhen and provide the basis for putting forward reasonable control measures. Methods A total of 11 public places in central air conditioning and ventilation system were randomly selected in Shenzhen for sampling and testing the amount of dust accumulated, the total number of bacteria, the total number of fungi and β-hemolytic streptococcus in the inner surface of the duct. Results The qualified rate of dust accumulation on the inner surface of central air-conditioning and ventilating ducts of public places was 69.0%, the pass rate of total bacteria was 100.0%, the pass rate of total fungi was 100.0% and the pass rate of β-hemolytic streptococcus was 100.0%. Conclusion There are health and safety issues in the HVAC ventilation system in public places, and health management should be strengthened.