Department of Civil, Environmental, and Architectural Engineering, University of Colorado, Boulder, 4001 Discovery Dr, UCB 607, Boulder, CO, 80303, USA.
Department of Civil, Environmental, and Architectural Engineering, University of Colorado, Boulder, 4001 Discovery Dr, UCB 607, Boulder, CO, 80303, USA.
Water Res. 2018 Oct 15;143:292-300. doi: 10.1016/j.watres.2018.06.017. Epub 2018 Jun 18.
The advantages of polychromatic ultraviolet (UV) light for viral disinfection can be optimized for disinfection using emerging tailored wavelength sources including KrCl excimer lamps and light emitting diodes (LEDs). Disinfection of the common viral surrogate MS2 bacteriophage was measured after exposure to these emerging sources and conventional low pressure (LP) mercury UV lamps in individual or sequential exposures. The first dose response for any virus (MS2) exposed to a KrCl excimer lamp is reported, showing the high efficiency of fluence-based disinfection because of increased viral susceptibility at the low wavelengths emitted by the excilamp. Sequential exposure dose responses indicated synergy from sequential exposures of LP and excimer lamps, which were competitive on an electrical basis at worst-and best-case scenarios of wall plug efficiency with current medium pressure (MP) disinfection. Best-case scenarios for electrical efficiency also showed all sequential exposures to be competitive with MP UV disinfection. Predictive models for sequential exposure dose responses were assessed to support the current feasibility of incorporating sequential UV exposures to optimize tailored wavelength viral disinfection.
多色紫外线 (UV) 光在病毒消毒方面的优势，可以通过新兴的定制波长光源（包括 KrCl 准分子灯和发光二极管 (LED)）来优化消毒效果。将常见的病毒替代物 MS2 噬菌体暴露于这些新兴光源和传统低压 (LP) 汞 UV 灯中进行单次或连续暴露后，对其进行消毒效果测量。报告了首次对 KrCl 准分子灯照射的任何病毒（MS2）的剂量响应，这表明基于剂量的消毒效率很高，因为准分子灯发出的低波长增加了病毒的敏感性。连续暴露剂量响应表明 LP 和准分子灯的连续暴露具有协同作用，在最坏和最佳墙壁插头效率情况下（目前的中压 (MP) 消毒），LP 和准分子灯在电力方面具有竞争力。在电力效率的最佳情况下，所有连续暴露也都与 MP UV 消毒具有竞争力。对连续暴露剂量响应的预测模型进行了评估，以支持当前将连续 UV 暴露纳入优化定制波长病毒消毒的可行性。
