Effect of Combined UV-Tea Polyphenol Disinfection on Antibiotic-Resistant Genes in Drinking Water
Publication: Journal of Environmental Engineering
Volume 148, Issue 12
Abstract
Antibiotic resistance has become a major global challenge in recent years. Abusing and misusing antibiotics leads to the widespread spread of resistance genes in the water environment, which poses great challenges to drinking water safety and human health. Traditional disinfection methods are not effective against antibiotic resistance genes. While ultraviolet (UV) disinfection is widely used for its efficient bactericidal effect, its effect on tetracycline resistance genes is poor, and there is no disinfection persistence, as antibiotic resistance bacteria are easily restored by photoreactivation. As a green way of disinfection with continuous disinfection and without disinfection by-products, tea polyphenols have gradually attracted wide attention from researchers, because they can serve as an assistant disinfectant for ultraviolet disinfection. Studies have shown that tea polyphenols as an assistant disinfectant can effectively compensate for the disadvantages of ultraviolet disinfection. In this study, the effects of a UV-tea polyphenols combined disinfection process on resistance genes were analyzed by metagenomics sequencing, and the combined process showed better removal of tetracycline and -lactam resistance genes. It is suitable for raw water containing higher concentrations of specific resistance genes. This combined disinfection process controls the spread of resistance genes mainly through the direct disruption of resistance genes and the effective inhibition and killing of resistant bacteria. This is important for the optimization of resistance genes removal capability in water treatment.
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Data Availability Statement
All data, models, and code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was supported by Open Project of Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture (Grant No. 2020), the National Natural Science Foundation of China (Grant No. 51678026), and Beijing University of Civil Engineering and Architecture Postgraduate Innovation Project (Grant No. PG2021047).
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 148 • Issue 12 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Dec 7, 2021
Accepted: Jun 6, 2022
Published online: Sep 29, 2022
Published in print: Dec 1, 2022
Discussion open until: Feb 28, 2023
ASCE Technical Topics:
- Bacteria
- Business management
- Design (by type)
- Disinfection
- Drinking water
- Engineering fundamentals
- Environmental engineering
- Industrial wastes
- Load and resistance factor design
- Load factors
- Pollutants
- Practice and Profession
- Public administration
- Public health and safety
- Safety
- Solid wastes
- Structural design
- Wastes
- Water (by type)
- Water and water resources
- Water management
- Water treatment
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