Characteristics of Bioaerosols Emitted from WWTP with SBR Treatment Process

被引：3
作者：
Yang K.-X. [1 ,2 ]
Hou H.-X. [3 ]
Wang Y.-Z. [3 ]
Shi H.-R. [3 ]
Xu G.-S. [1 ,2 ]
Han Y.-P. [1 ]
Liu J.-X. [1 ,2 ]
Li L. [1 ,2 ]
机构：
[1] Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
[2] University of Chinese Academy of Sciences, Beijing
[3] Anhui Guozhen Environmental Protection Technology Joint Stock Co., Ltd., Hefei
来源：
Huanjing Kexue/Environmental Science | 2018年 / 39卷 / 11期
关键词：
Bioaerosol dispersion; Bioaerosols; Emission characteristics; Risk assessment; Wastewater treatment;
D O I：
10.13227/j.hjkx.201803161
中图分类号：
学科分类号：
摘要：
Sampling sites were located in a wastewater treatment plant (WWTP) with a sequencing batch reactor activated sludge process to investigate the characteristics of bioaerosol emissions. The results indicated that bioaerosols were detected from each treatment section of the WWTP, and concentrations of bioaerosols were in the range of 82-1 525 CFU•m -3 . The coarse screen, aeration tank, and sludge dewatering house were the main sources of bioaerosols. The dominant species in each treatment section was Cyanobacteria, and the other main bacterial taxa were Aeromonas, Peptostreptococcaceae, Moraxellaceae, Chroococcidiopsis, Sphingomonas, Arcobacter, and Acinetobacter. Among the identified bacterial genera, Aeromonas, Arcobacter, Acinetobacter, and Sphingomonas were potential pathogens. Bioaerosol concentration and abundance decreased along the vertical and horizontal directions. Appropriate temperature and relative humidity benefited the survival of bioaerosols in the air (P<0.01), whereas a negative relationship between bioaerosol concentration and wind speed was observed (P<0.05). Although exposure risks caused by bioaerosols were negligible in this study, the accumulation of bioaerosols would increase potential health risks. The bioreactor for odor treatment could effectively reduce bioaerosol emissions. © 2018, Science Press. All right reserved.
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页码：4909 / 4914
页数：5
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