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紫外氯胺组合消毒供水系统中病毒微生物的分布特征
引用本文:韩雪,孙坚伟,张力,王哲明,白晓慧. 紫外氯胺组合消毒供水系统中病毒微生物的分布特征[J]. 环境科学, 2021, 42(2): 860-866
作者姓名:韩雪  孙坚伟  张力  王哲明  白晓慧
作者单位:上海交通大学生命科学技术学院,微生物代谢国家重点实验室,上海 200240;上海浦东威立雅自来水有限公司,上海 200127
基金项目:国家水体污染控制与治理科技重大专项(2017ZX0720704-04);国家自然科学基金项目(51878406)
摘    要:为研究紫外氯胺组合消毒对供水系统中病毒微生物的影响特性,以生产规模紫外氯胺组合消毒供水系统为研究对象,应用宏基因组技术对供水系统中病毒微生物的迁移变化、群落结构和病毒宿主进行了分析.结果表明,紫外氯胺组合消毒工艺能降低病毒物种数(6.13%)和基因丰度(51.97%),但不能完全去除水中病毒微生物.对比美国环保署(US...

关 键 词:饮用水  供水系统  紫外氯胺组合消毒  宏基因组  病毒群落
收稿时间:2020-07-04
修稿时间:2020-07-31

Distribution Characteristics of Viruses Microorganisms in a Water Supply System with Combined Ultraviolet Chloramine Disinfection
HAN Xue,SUN Jian-wei,ZHANG Li,WANG Zhe-ming,BAI Xiao-hui. Distribution Characteristics of Viruses Microorganisms in a Water Supply System with Combined Ultraviolet Chloramine Disinfection[J]. Chinese Journal of Environmental Science, 2021, 42(2): 860-866
Authors:HAN Xue  SUN Jian-wei  ZHANG Li  WANG Zhe-ming  BAI Xiao-hui
Affiliation:State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China;Shanghai Pudong Veolia Water Corporation Limited, Shanghai 200127, China
Abstract:To study the effect of combined ultraviolet (UV) chloramine disinfection on viruses in a drinking water supply system, a full-scale experiment was conducted to analyze the distribution, variability, community structure, and hosts of viruses using metagenomics. The results showed that the combined UV chloramine process reduced the number of virus species (6.13%) and gene abundance (51.97%) but did not completely remove the viruses from the water. The United States Environmental Protection Agency (USEPA) report that virus removal efficiencies from water can reach 99%-99.99% based on culturing methods. However, in this study, metagenomic analysis indicated a total virus removal rate of only 93.46%. Therefore, the detection of viruses in water using culturing method cannot reliably detect viruses in drinking water. Caudovirales are the most abundant type of virus in water supply systems and are sensitive to chloramine disinfection. Lentivirus, as a virus that can infect humans and vertebrates, has strong resistance to UV and chloramine disinfection. The main virus hosts in the studied water supply system were bacteria (61.50%). The viruses in the raw water were mainly parasitic in Synechococcus. The dominant virus host was Pseudomonas in both the effluent water and pipe network water. The gene abundance of the Pseudomonas aeruginosa host in the pipe network increased by 342.62%, which requires further attention as a virus risk in pipe network systems. Overall, combined UV chloramine disinfection was more effective at the removal of virus hosts than single UV disinfection (51.97% compared to 0.79%).
Keywords:drinking water  water supply systems  combined ultraviolet chloramine disinfection  metagenomics  virus community
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