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Title: | Antibiotic resistance genes and pathogens in wastewater treatment plant effluents:regrowth of ARG/ARB after inactivation processes | Authors: | Pham Tien Hung | Keywords: | Antibiotic resistance genes;Wastewater treatment plant;Pathogens | Issue Date: | 2022 | Abstract: | This study evaluated the effectiveness of advanced treatment processes (photo-Fenton, photocatalyst, membrane bioreactor and constructed wetland) and disinfection processes (UV, chlorination and ozonation) on the removal of ARGs/ARB as well as its capital cost (capex) and operational cost (opex). The findings demonstrated that a number of physico-chemical variables, including SS, pH, DOC, and others, had an impact on the efficacy of conventional disinfection processes such as chlorination, UV irradiation, and ozonation in addition to dosage dependence. It has been found that significant doses of disinfectant are necessary to inactivate ARGs rather than their hosts, despite the fact that doing so causes severe microbial community rearrangements. In addition to disinfection methods, light-supported techniques including photo-Fenton and photocatalyst demonstrated more effectiveness than disinfection techniques, and no regrowth was detected owing to the affecting residue. The performance of the system is also greatly influenced by chemical concentration and light intensity. In terms of constructed wetland (CW) and membrane bioreactor (MBR), they show good removal of ARGs/ARB via its mechanism of separation, adsorption and biodegradation; however the accumulation of ARGs/ARB on the biosolids, surfaces of membrane and substrate are critically concerned. According to the regrowth potential of ARGs/ARB, photo-Fenton and photocatalyst showed the most optimal prevention, compared to disinfection processes; however, the lack of information of the regrowth relates to MBRs and CWs |
URI(1): | https://epub.vgu.edu.vn/handle/dlibvgu/1710 |
Appears in Collections: | Water Technology, Reuse and Management (WTE) |
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Antibiotic resistance genes and pathogens in wastewater treatment plant effluents regrowth of ARG ARB after inactivation processes.pdf | 2.12 MB | Adobe PDF | View/Open |
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