Process of research on Far-UVC technology in water treatment
The main light sources used for emitting Far-UVC are introduced,such as krypton chloride excimer lamps.The mechanisms and recent research advancements of Far-UVC in microbial inactivation and organic micropollutant degradation are highlighted.In terms of microbial inactivation,Far-UVC could induce irreparable damage to pathogens by disrupting their nucleic acids,proteins,and lipids.For the control of micropollutant,on the one hand,the photon energy of Far-UVC exceeds the average bond dissociation energies of most chemical bonds.On the other hand,some of the organic micropollutants and oxidants have enhanced characteristic absorption under Far-UVC irradiation.This leads to the effective degradation of organic micropollutants by Far-UVC technology.Current studies have indicated that Far-UVC outperforms other UV techniques in some certain microorganism inactivation and organic micropollutant degradation.The effect of background water matrix components on the Far-UVC technique is then analysed.Finally,the prospects for future research directions on Far-UVC technology are dicussed,aiming to provide reference and guidance for research and application of this technology in the field of water treatment.
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