深圳公共场所集中空调通风系统卫生学评价

目的:调查评价公共场所集中空调通风系统污染状况,为卫生管理提供依据。方法:随机抽取深圳市各类公共场所2 0个集中空调通风系统,检查各部件清洁度;检测新风量、冷却水中军团菌及空调送风中可吸入颗粒物、细菌总数、真菌总数、溶血性链球菌含量。结果:2 0个空调系统的2 50个部件中,2 4 %有尘粒,5 %有污垢,未发现菌癍;有35 %空调系统新风量未达到卫生标准要求;空调送风中污染物的平均日均值分别为:可吸入颗粒物0 . 1 2mg/m3,细菌总数2 91cfu/m3,总数2 .73cfu/m3,未检出溶血性链球菌;分别有1 0 %、5 %的空调系统送风中可吸入颗粒物、细菌总数超标;采集50份冷却塔水样,未检出军团菌。结论:公共场所集中空调通风系统仍存在卫生问题,应加强卫生管理。

Objective:To investigate the pollution of ventilating system in air condition in public in order to present evidence to hygiene management. Methods:To take out 20 ventilating system in air condition from every kind of public in Shenzhen and check the sweep degree of each part: To exam new breeze,measure the legionella in cooling tower water, PM10,aerobic bacterial count,aerobic molds count and the content of staplococcus hewolyticus in the air. Results:250 parts from 20 air condition system,24% of them had dust?5%had bilge,but no milden; 35%new breeze measure of air Condition system is over the hygiene standard;The total average of the pollution in air condition are:PM10 is 0.12mg/m 3,aerobic bacterial count is 291cfu/m 3,aerobic molds count is 273cfu/m 3and sterptococcus hemolylicus not be checd out ;10%PM10 and 5% aerobic bacterial count is over the standard; legionella not be found in 50 cooting tower water. Conclusion :The results indicate that the problem have even existed in the ventilating system in public. the hygiene management must be go on enhaneing.