Disinfection of Antibiotic-resistant Bacteria in Sewage and Hospital Effluent by Ozonation
نویسندگان
چکیده
The present status of antimicrobial-resistant bacteria (AMRB) and antimicrobial-susceptible (AMSB) in hospital effluent, sewage treatment plant (STP) influent, STP secondary effluent (chlorination), (ozonation), river water were analyzed an urban Japan by a 2-year monitoring survey. results revealed the existence multiple AMRB grouped into six classes whose numbers at 19 to 2,800 CFU/mL, influent 9 3,133 1 148 (chlorination) N.D. 191 28 CFU/mL In case (ozonation) level was, however, quite low ranging from several roughly 1/10 1/100 concentrations detected (chlorination). bacterial community structure analysis indicates that only ozonation changed constitution phyla. Rates antimicrobial resistance high among MDRA (82% 79% influent), MDRP (35% 40%), MRSA (93% 87%). showed against chlorine but could be gradually disinfected ozonation.When model wastewater prepared mixing 1:9 ratio directly treated with ozone, both AMSB inactivated effectively variance time bacteria, accompanied change phyla similar observation (ozonation). Ozonation almost all target (>99.9%) after 10 min (CT value: 1.0 mg·min/L). Changing taxonomic diversity micro-organisms based on 16S rRNA gene sequencing not also removed genes (AMRGs) wastewater.As result study, recommendation was evoked operate for immediately flowing out, leading desirable contribution reduce environmental pollution, potential hazard human health caused infectious diseases. Extension opens new way assess risks associated spread aquatic environments keep environment safe maintain health. To our knowledge, this is first report show inactivation profiles real together direct ozonation.
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ژورنال
عنوان ژورنال: Ozone-science & Engineering
سال: 2021
ISSN: ['1547-6545', '0191-9512']
DOI: https://doi.org/10.1080/01919512.2021.1906095