Effects of aeration on microbes and intestinal bacteria in bioaerosols from the BRT of an indoor wastewater treatment facility
文献类型：期刊论文
| 作者 | Wang, Yanjie; Li, Lin; Xiong, Ren; Guo, Xuesong; Liu, Junxin |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-01-15 |
| 卷号 | 648页码:1453-1461 |
| 关键词 | Bioaerosols Particle size Aeration rate Source apportionment Risk assessment |
| ISSN号 | 0048-9697 |
| 英文摘要 | The generation and emission of airborne bacteria from a biochemical reaction tank (BRT) for wastewater treatment was investigated by altering the aeration rate. The levels of bioaerosols increased from 715 +/- 69 to 1597 +/- 135 CFU/m(3) (total airborne bacteria) and from 78 +/- 6 to 359 +/- 18 CFU/m(3) (intestinal bacteria) as the aeration rate increased from 0.3 to 1.2 m(3)/h. Most airborne bacteria were attached to particles smaller than 4.7 mu m at an aeration rate of 0.3 m(3)/h. They were found attached to larger particles (>4.7 mu m) when the aeration rate increased to 1.2 m(3)/h. A similar phenomenon was observed for intestinal bacteria. The high-throughput sequencing technique was used to assay the microbial populations of the bioaerosols. Both microbial counts and diversity increased as the aeration rate increased. Brevundimonas (63.82%), Chryseobacterium (16.54%), and Micrococcaceae (12.37%) were the dominant intestinal bacteria at an aeration rate of 0.3 m(3)/h. Pseudochrobactrum (33.10%), Citrobacter (21.28%), and Yersinia (18.21%) were the dominant intestinal bacteria at an aeration rate of 1.2 m(3)/h. The level, particle size distribution, population structure, and diversity of the bioaerosols were all affected by aeration rate. The source tracker results indicated that water and the surrounding air were the two main bioaerosol sources. The contribution of water is greater at larger levels of aeration. Inhalation was the main pathway of microbial aerosol intake for people in the surrounding area. The exposure hazard quotients for adult males were generally higher than those for adult females. Necessary measures should be taken to ensure worker safety. (c) 2018 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/43079]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Zhengzhou Univ, Sch Publ Hlth, Zhengzhou, Henan, Peoples R China 3.Univ Chinese Acad Sci, Natl Engn Lab VOCs Pollut Control Mat & Technol, Beijing 101408, Peoples R China 4.Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yanjie,Li, Lin,Xiong, Ren,et al. Effects of aeration on microbes and intestinal bacteria in bioaerosols from the BRT of an indoor wastewater treatment facility[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,648:1453-1461. |
| APA | Wang, Yanjie,Li, Lin,Xiong, Ren,Guo, Xuesong,&Liu, Junxin.(2019).Effects of aeration on microbes and intestinal bacteria in bioaerosols from the BRT of an indoor wastewater treatment facility.SCIENCE OF THE TOTAL ENVIRONMENT,648,1453-1461. |
| MLA | Wang, Yanjie,et al."Effects of aeration on microbes and intestinal bacteria in bioaerosols from the BRT of an indoor wastewater treatment facility".SCIENCE OF THE TOTAL ENVIRONMENT 648(2019):1453-1461. |
入库方式： OAI收割
来源：生态环境研究中心
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