Effects of GAC and UV/H2O2-GAC filtration on the bacterial community and opportunistic pathogens in simulated drinking water systems
文献类型：期刊论文
| 作者 | Huo, Lixin; Zhao, Shehang; Shi, Baoyou ; He, Shouyang; Wang, Haibo
|
| 刊名 | ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 7期号:9页码:1611-1621 |
| ISSN号 | 2053-1400 |
| 英文摘要 | The effects of granular activated carbon (GAC) and UV/H2O2-GAC filtration on the bacterial community and opportunistic pathogens (OPs) in simulated drinking water systems were investigated in this study. The results indicated that GAC filtration and UV/H2O2-GAC filtration enhanced the dissolved organic carbon (DOC) and assimilable organic carbon (AOC) removal efficiency in the influents of drinking water distribution systems (DWDSs) by the removal of tryptophan-like proteins, fulvic acid-like, and humic acid-like compounds, compared with sand filtration (SF). The lower organic matter concentration reduced the diversity and richness of the bacterial community, inducing the production of lower extracellular polymeric substances (EPS) in these two DWDSs. EPSs with a lower content of proteins led to less bacterial attachment onto particles to form particle-associated bacteria, and adsorption onto the surface of pipes to form biofilms. This process induced a lower chlorine-resistance capability of the bacteria in water and biofilm in DWDSs. The relative abundance of Legionella at the genus level was 0.93%, 0.29%, and 0.13% in the biofilms of SF DWDSs, GAC DWDSs, and UV/H2O2-GAC DWDSs, respectively. Mycobacteria and Pseudomonas showed the same changes as Legionella. The quantitative polymerase chain reaction (qPCR) results also suggested that the number of Legionella pneumophila, Mycobacteria avium, and Pseudomonas aeruginosa were lower in the effluents and biofilms of GAC DWDSs and UV/H2O2-GAC DWDSs. Therefore, GAC filtration can be used to control OPs growth in DWDSs, and UV/H2O2 can improve the efficiency of GAC filtration, especially with the 48 h distribution in DWDSs. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46198]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 作者单位 | 1.Guizhou Univ, Minist Educ, Key Lab Karst Georesources & Environm, Guiyang 550025, Peoples R China 2.Qingdao Univ Technol, Qingdao 266033, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenviron Sci, Key Lab Drinking Water Sci & Technol, 18 Shuangqing Rd, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huo, Lixin,Zhao, Shehang,Shi, Baoyou,et al. Effects of GAC and UV/H2O2-GAC filtration on the bacterial community and opportunistic pathogens in simulated drinking water systems[J]. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,2021,7(9):1611-1621. |
| APA | Huo, Lixin,Zhao, Shehang,Shi, Baoyou,He, Shouyang,&Wang, Haibo.(2021).Effects of GAC and UV/H2O2-GAC filtration on the bacterial community and opportunistic pathogens in simulated drinking water systems.ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,7(9),1611-1621. |
| MLA | Huo, Lixin,et al."Effects of GAC and UV/H2O2-GAC filtration on the bacterial community and opportunistic pathogens in simulated drinking water systems".ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY 7.9(2021):1611-1621. |
入库方式： OAI收割
来源：生态环境研究中心
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