摘要
为了解污水微生物气溶胶对居民可能造成的危害,对污水厂附近居民住宅进行测定,结果在各层楼的窗口和阳台的空气中均分离到大肠菌群等 G(-)杆菌。测定污水微生物气溶胶颗粒大小发现:直径1～2μm占17.45—19.03％,2～6μm占60.90～61.67％,故至少有78.35～80.70％气溶胶能吸入至下呼吸道。污水微生物气溶胶颗粒大小组成的特点,增加了对下呼吸道的危险性。近年来 G(-)杆菌引起呼吸道、伤口等感染有增长趋势。作者详细讨论了这些细菌的致病性并认为污水厂附近居民吸入来自污水的微生物气溶胶,或通过污染创口或食入途径均可能致病。研究结果认为污水厂产生的微生物气溶胶对人的危害性不容忽视,是一个必须引起注意的环境保护新问题,建议有关部门采取预防措施并纳入环境保护条例之中。
For exploring the infectious risk of wastewater microbial aerosol on inhabitants who live near wastewater treatments Plants, an investigation was made. Gram-negative bacilli were found not only in the air around the wastewater treatment plants,but also on windowsills and bal- conies in every storey of inhabitant buildings near the plants.The bacteria isolated from air samples included Enterobacter,Alcali- genes,Serratia,Klebsiella and E.coli.The pathogenicity of these bacteria was discussed in details. The result of this study showed that 17.45—19.03 percent of particles of microbial aerosol were the diameter of 1—2 micron, and that of 60.90—61.67 percent were 2—6 micron.Therefore, 78.35—80.70 percent of particles might be inhaled into the lower respiratory tract during breath. The property of size distribution of wastewater bacterial aerosols indicates that infectious risk of wastewater is possibly greater than that of bacterial aerosols emitted from human body. The results indicate that it is important to protect inhabitants from microbial aerosol of wastewater.
出处
《中国卫生检验杂志》
CAS
1992年第3期138-141,共4页
Chinese Journal of Health Laboratory Technology
