Chemicals and microbes in bioaerosols from reaction tanks of six wastewater treatment plants: survival factors, generation sources, and mechanisms.
Chemicals and microbes in bioaerosols from reaction tanks of six wastewater treatment plants: survival factors, generation sources, and mechanisms.
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六个污水处理厂反应池生物气溶胶中的化学物质和微生物：生存因素、产生来源和机制
DOI：
10.1038/s41598-018-27652-2
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发表时间：
2018-06-19
影响因子：
4.6
通讯作者：
Liu J
中科院分区：
文献类型：
--
作者：
Wang Y;Lan H;Li L;Yang K;Qu J;Liu J
从长江三角洲、珠江三角洲和京津冀地区6个城市污水处理厂的生化反应池中采样，对其形态、水平和组成进行了评价。形态观察表明，颗粒呈无定形分散，主要元素为C、O和Si。生物气溶胶由空间上不同水平的微生物和化学物质组成。随着采样高度的增加，生物气溶胶中各组分的含量呈下降趋势。通过SourceTracker分析，生化反应池中的废水被确定为生物气溶胶的重要来源。气泡破裂产生的薄膜液滴的气雾化是生物气溶胶产生的主要原因。增加水的曝气率可以促进生物气溶胶的产生。相对湿度、温度、风速和太阳光照影响了生物气溶胶的存活。大颗粒沉降和风扩散显著降低了大气气溶胶浓度。当采样点高度从0.1 m增加到3.0 m时，微生物和总悬浮颗粒物的浓度分别下降了23.71%和38.74%。应高度重视生物气溶胶中总悬浮颗粒和微生物的控制。
Sampling was conducted from biochemical reaction tanks of six municipal wastewater treatment plants in the Yangtze River and Zhujiang deltas and the Jing-Jin-Ji region to assess their morphology, level, and composition. Morphological observations suggested that particles were scattered amorphously with C, O, and Si as the major elements. Bioaerosols are composed of spatially varying levels of microorganisms and chemicals. As the sampling height increased, the level of the components in the bioaerosols decreased. Wastewater in the biochemical reaction tanks was identified as an important source of bioaerosols using SourceTracker analysis. The aerosolization of film drops produced by bursting of bubbles was the main reason for the generation of bioaerosols. Increasing the aeration rate of water may promote bioaerosol generation. Relative humidity, temperature, wind speed, and solar illumination influenced the survival of bioaerosols. Large particle sedimentation and wind diffusion significantly decreased the atmospheric aerosol concentration. When the sampling point height increased from 0.1 m to 3.0 m, the concentrations of the microorganisms and total suspended particles decreased by 23.71% and 38.74%, respectively. Considerable attention should be paid to the control of total suspended particles and microorganisms in bioaerosols.
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DOI：
10.1016/j.jes.2017.08.027
发表时间：
2018-05
期刊：
Journal of environmental sciences (China)
影响因子：
--
作者：
Kim KH;Kabir E;Jahan SA
通讯作者：
Jahan SA
污水处理厂旋转刷引起的气溶胶的微生物结构和化学成分
影响因子：
5.8
作者：
Han, Yunping;Li, Lin;Zhang, Mengzhu
通讯作者：
Zhang, Mengzhu
影响因子：
2.3
作者：
Urban, Edit;Horvath, Zoltan;Lazar, Gyoergy
通讯作者：
Lazar, Gyoergy
理想高层城市地区建筑高度变化对污染物扩散和行人通风的影响
影响因子：
7.4
作者：
Hang, Jian;Li, Yuguo;Di Sabatino, Silvana
通讯作者：
Di Sabatino, Silvana
废水处理厂的生物气溶胶排放和空气中抗生素抗性基因的检测
影响因子：
5
作者：
Li, Jing;Zhou, Liantong;Yao, Maosheng
通讯作者：
Yao, Maosheng