Characteristics and formation mechanism of intestinal bacteria particles emitted from aerated wastewater treatment tanks
文献类型：期刊论文
| 作者 | Wang, Yanjie; Li, Lin; Xue, Song; Han, Yunping; Yang, Kaixiong |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2019-10-15 |
| 卷号 | 163页码:- |
| 关键词 | Formation mechanism Particle size distribution Surface aeration Submerged aeration WWTPs |
| ISSN号 | 0043-1354 |
| 英文摘要 | Aeration tanks in municipal wastewater treatment plants (WWTPs) are regarded as sources of bioaerosols, often containing particles and microbes. In this study, intestinal bacteria were investigated from biochemical reaction tanks (BRTs) of six municipal WWTPs. It was observed that 86 CFU/m(3) of intestinal bacteria (in average) occurred in the BRTs installed surface aerator, which was higher than those adopted submerged aeration (67 CFU/m(3) in average). 62.72% of fine particles were observed in the BRTs supplied oxygen by submerged aerator, while 75.73% of coarse particles emitted during surface aeration. Pseudomonas sp., Serratia sp. and Acinetobacter sp. were identified as pathogenic bacteria presented in the intestinal bacteria population and most of them existed initially in water or sludge, particularly in water surface. The emission level and particle size distribution were significantly correlated with aeration mode adopted by the WWTPs. The bioaerosols particles emitted from surface aeration process was higher than that from submerged aeration process. Meanwhile, the BRTs with submerged aerators released more fine particles, which can get into the alveoli and represented the potential challenge to human health. Canonical correspondence analysis results exhibited that population of intestinal bacteria had a positive correlation with aeration rate and water quality. As the intestinal bacteria in the bioaerosols emitted from the WWTPs may pose a potential risk to onsite operators, aeration tanks in WWTPs should be paid more attention as a source of intestinal bacterial emissions. (C) 2019 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42627]  |
| 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.Zhengzhou Univ, Sch Publ Hlth, Zhengzhou 450001, Henan, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 3.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England |
| 推荐引用方式 GB/T 7714 | Wang, Yanjie,Li, Lin,Xue, Song,et al. Characteristics and formation mechanism of intestinal bacteria particles emitted from aerated wastewater treatment tanks[J]. WATER RESEARCH,2019,163:-. |
| APA | Wang, Yanjie,Li, Lin,Xue, Song,Han, Yunping,&Yang, Kaixiong.(2019).Characteristics and formation mechanism of intestinal bacteria particles emitted from aerated wastewater treatment tanks.WATER RESEARCH,163,-. |
| MLA | Wang, Yanjie,et al."Characteristics and formation mechanism of intestinal bacteria particles emitted from aerated wastewater treatment tanks".WATER RESEARCH 163(2019):-. |
入库方式： OAI收割
来源：生态环境研究中心
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