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- W3167622657 abstract "The COVID-19 pandemic draws much attention to virus inactivation since the SARS-CoV-2 was detected in miscellaneous environments and the wastewater can be a potential transmitting pathway. UV irradiation, ozonation and chlorination are widely used disinfection processes in water treatment. In this review, the mechanisms and applications of three disinfection processes are introduced, and their inactivation effects on virus as well as other microorganisms are compared and discussed. The resistance of viruses to UV irradiation is generally stronger than that of bacteria. 4-log inactivation of bacteria can be easily obtained within a UV dose of 10 mJ/cm2. However, the doses to reach the same virus removal rate vary greatly from 10 to 140 mJ/cm2. The coronaviruses have even stronger UV resistance. Comparatively, ozonation and chlorination are effective methods to inactivate viruses, and the CT values of 4-log removal for most viruses concerned are lower than 1 mg·min/L and 10 mg·min/L, respectively. Protozoa, fungal spores and bacterial spores are more resistant to disinfection. Temperature, pH, organic matters, turbidity and other parameters all have influences on the disinfection. With a 10 °C decrease in temperature, the CT value required for certain removal rates doubles. Generally low pH promotes disinfection and high pH is against it. In drinking water and wastewater treatment process, the resistance properties of microorganisms and other influence parameters should be taken into consideration when choosing disinfection technologies." @default.
- W3167622657 created "2021-06-22" @default.
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- W3167622657 date "2021-01-01" @default.
- W3167622657 modified "2023-10-01" @default.
- W3167622657 title "The virus removal in UV irradiation, ozonation and chlorination" @default.
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- W3167622657 doi "https://doi.org/10.1016/j.watcyc.2021.05.001" @default.
- W3167622657 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8171166" @default.
- W3167622657 hasPublicationYear "2021" @default.
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