文献详情
Revealing the changes of bacterial community from water source to consumers tap: A full-scale investigation in eastern city of China
文献类型：期刊
期刊名称：Journal of environmental sciences (China)影响因子和分区
年：2020
卷：87
页码：331-340
ISSN：1001-0742
关键词：Bacterial community,Drinking water distribution system,Opportunistic pathogen,Water treatment process
所属部门：环境学院
摘要：This study profiled the bacterial community variations of water from four water treatment systems, including coagulation, sedimentation, sand filtration, ozonation-biological activated carbon filtration (O3-BAC), disinfection, and the tap water after the distribution process in eastern China. The results showed that different water treatment processes affected the bacterial community structure in different ways. The traditional treatment processes, including coagulation, sedimentation and sand f ...More
This study profiled the bacterial community variations of water from four water treatment systems, including coagulation, sedimentation, sand filtration, ozonation-biological activated carbon filtration (O3-BAC), disinfection, and the tap water after the distribution process in eastern China. The results showed that different water treatment processes affected the bacterial community structure in different ways. The traditional treatment processes, including coagulation, sedimentation and sand filtration, reduced the total bacterial count, while they had little effect on the bacterial community structure in the treated water (before disinfection). Compared to the traditional treatment process, O3-BAC reduced the relative abundance of Sphingomonas in the finished water. In addition, ozonation may play a role in reducing the relative abundance of Mycobacterium. NaClO and ClO2 had different effects on the bacterial community in the finished water. The relative abundance of some bacteria (e.g. Flavobacterium, Phreatobacter and Porphyrobacter) increased in the finished water after ClO2 disinfection. The relative abundance of Mycobacterium and Legionella, which have been widely reported as waterborne opportunistic pathogens, increased after NaClO disinfection. In addition, some microorganisms proliferated and grew in the distribution system, which could lead to turbidity increases in the tap water. Compared to those in the finished water, the relative abundance of Sphingomonas, Hyphomicrobium, Phreatobacter, Rheinheimera, Pseudomonas and Acinetobacter increased in the tap water disinfected with NaClO, while the relative abundance of Mycobacterium increased in the tap water disinfected with ClO2. Overall, this study provided the detailed variation in the bacterial community in the drinking water system.Copyright ? 2019. Published by Elsevier B.V. ...Hide

DOI：10.1016/j.jes.2019.07.017
百度学术：Revealing the changes of bacterial community from water source to consumers tap: A full-scale investigation in eastern city of China
语言：外文
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Effects of light-dark cycles on photosynthetic bacteria wastewater treatment and valuable substances production.Zhi Ran, Yang Anqi, Zhang Guangming, et al. .Bioresource technology. 2019, 274, 496-501.
Benefit of solid-liquid separation on volatile fatty acid production from grass clipping with ultrasound-calcium hydroxide pretreatment.Wang Siqi, Tao Xue, Zhang Guangming, et al. .Bioresource technology. 2019, 274, 97-104.