Process of research on Far-UVC technology in water treatment
FENG Ya-nan1, TAN Yu-chen1, LI Hao-xin1, ZHANG Xi1, ZHANG Tian-yang2, LI Zi-fu1, SUN Wen-jun3, AO Xiu-wei1
1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100084, China; 2. Key Laboratory of Urban Water Supply, Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China; 3. School of Environment, Tsinghua University, Beijing 100084, China
Abstract：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.
冯亚男, 谭宇宸, 李皓芯, 张茜, 张天阳, 李子富, 孙文俊, 敖秀玮. 远紫外线技术在水处理领域应用的研究进展[J]. 中国环境科学, 2024, 44(12): 6787-6795.
FENG Ya-nan, TAN Yu-chen, LI Hao-xin, ZHANG Xi, ZHANG Tian-yang, LI Zi-fu, SUN Wen-jun, AO Xiu-wei. Process of research on Far-UVC technology in water treatment. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(12): 6787-6795.
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