Distribution characteristics and removal rate of antibiotics and antibiotic resistance genes in different treatment processes of two drinking water plants

IF 6.1 2区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
Jun Wang, Mingtao Huang, Bolin Li, Hassan Ibrahim Mohamed, Huanjie Song, Gezi Li, Ying Yu, Han Zhang, Weimin Xie
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引用次数: 0

Abstract

Emerging pollutants, such as antibiotics and antibiotic-resistance genes, are becoming increasingly important sources of safety and health concerns. Drinking water safety, which is closely related to human health, should receive more attention than natural water body safety. However, minimal research has been performed on the efficacy of existing treatment processes in water treatment plants for the removal of antibiotics and antibiotic resistance genes. To address this research gap, this study detected and analyzed six main antibiotics and nine antibiotic resistance genes in the treatment processes of two drinking water plants in Wuhan. Samples were collected over three months and then detected and analyzed using ultra-high-performance liquid chromatography-tandem mass spectrometry and fluorescence quantitation. The total concentrations of antibiotics and antibiotic resistance genes in the influent water of the two water plants were characterized as December > March > June. The precipitation and filtration processes of the Zou Maling Water Plant and Yu Shidun Water Plant successfully removed the antibiotics. The ozone-activated carbon process increased the removal rate of most antibiotics to 100%. However, a large amount of antibiotic resistance gene residues remained in the effluents of the two water plants. The experiments demonstrated that the existing ozone-activated carbon processes could not effectively remove antibiotic resistance genes. This study provides a reference for the optimization of drinking water treatment processes for antibiotics and antibiotic resistance gene removal.

Abstract Image

两家饮用水厂不同处理工艺中抗生素和抗生素耐药基因的分布特征和去除率
抗生素和抗生素耐药基因等新出现的污染物正日益成为安全和健康问题的重要来源。与人类健康密切相关的饮用水安全应该比天然水体安全受到更多关注。然而,有关水处理厂现有处理工艺对去除抗生素和抗生素耐药基因的功效的研究却少之又少。针对这一研究空白,本研究对武汉两家饮用水厂处理工艺中的六种主要抗生素和九种抗生素耐药基因进行了检测和分析。样品采集历时三个月,采用超高效液相色谱-串联质谱法和荧光定量法进行检测和分析。两个水厂进水中抗生素和抗生素耐药基因的总浓度特征分别为 12 月、3 月和 6 月。邹马岭水厂和于石墩水厂的沉淀和过滤工艺成功地去除了抗生素。臭氧活性炭工艺将大部分抗生素的去除率提高到 100%。然而,两家水厂的污水中仍残留着大量抗生素耐药基因。实验表明,现有的臭氧活化碳工艺无法有效去除抗生素耐药基因。这项研究为优化饮用水处理工艺去除抗生素和抗生素耐药基因提供了参考。
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来源期刊
Frontiers of Environmental Science & Engineering
Frontiers of Environmental Science & Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES
CiteScore
10.90
自引率
12.50%
发文量
988
审稿时长
6.1 months
期刊介绍: Frontiers of Environmental Science & Engineering (FESE) is an international journal for researchers interested in a wide range of environmental disciplines. The journal''s aim is to advance and disseminate knowledge in all main branches of environmental science & engineering. The journal emphasizes papers in developing fields, as well as papers showing the interaction between environmental disciplines and other disciplines. FESE is a bi-monthly journal. Its peer-reviewed contents consist of a broad blend of reviews, research papers, policy analyses, short communications, and opinions. Nonscheduled “special issue” and "hot topic", including a review article followed by a couple of related research articles, are organized to publish novel contributions and breaking results on all aspects of environmental field.
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