城市污水处理厂微生物气溶胶的逸散特性及控制措施  

Dispersion characteristics and control measures of microbial aerosols in municipal sewage treatment plants

作　　者：周芷琦 许冰冰 杜宇佳 杨庆[1] ZHOU Zhiqi;XU Bingbing;DU Yujia;YANG Qing(Faculty of Environment and Life Science,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学环境与生命学部,北京100124

出　　处：《给水排水》2023年第9期35-42,共8页Water & Wastewater Engineering

基　　金：国家自然科学基金(52170017)。

摘　　要：在处理城市污水的过程中,污水中的微生物可以通过气泡破裂、机械搅拌和水的湍流雾化产生气溶胶。微生物气溶胶的粒径主要分布在可吸入范围内(<4.7μm),同时污水的预处理、生物处理和污泥处理被认为是其浓度分布最广泛的处理区域。而微生物气溶胶的释放主要与污水处理工艺、曝气方式、污水中的微生物和化学物质以及环境条件等因素密切相关。为了有效控制城市污水处理厂中微生物气溶胶的逸散,总结了以下几种措施:选择合适的曝气方式及装置,优化污水处理工艺的运行参数,以及加盖处理、紫外线照射、增加通风时间、活性炭吸附等。In the process of treating municipal sewage,the microorganisms in sewage can produce aerosols through bubble bursting,mechanical stirring and turbulent atomization of water.Its particle size is mainly distributed in the inhalable range of less than 4.7μm.Meanwhile the pretreatment,biological treatment and sludge treatment of wastewater are considered to be the treatment areas with the widest dis-tribution of their concentrations.The escape of microbial aerosol is mainly related to sewage treatment process,aeration mode,microorganisms and chemicals in sewage,and environmental conditions.In order to effectively control the escape of microbial aerosols in municipal sewage treatment plants,we summarized the following measures:selecting appropriate aeration methods and devices,optimizing the operation parameters of sewage treatment process,capping treatment,ultraviolet irradiation,increasing ventilation time,activated carbon adsorption,ect.

关 键 词：微生物气溶胶 逸散特性 控制措施 污水处理厂 

分 类 号：TU992[建筑科学—市政工程]