Application of ultraviolet light-emitting diodes (UV-LEDs) for water disinfection: A review

作者：Song Kai; Mohseni Madjid; Taghipour Fariborz^*

来源：Water Research, 2016, 94: 341-349.

DOI：10.1016/j.watres.2016.03.003

• UV disinfection
• Ultraviolet light-emitting diode (UV-LED)
• Water treatment
• Inactivation effectiveness

Ultraviolet (UV) disinfection is an effective technology for the inactivation of pathogens in water and is of growing interest for industrial application. A new UV source ultraviolet light-emitting diode (UV-LED) has emerged in the past decade with a number of advantages compared to traditional UV mercury lamps. This promising alternative raises great interest in the research on application of UV-LEDs for water treatment. Studies on UV-LED water disinfection have increased during the past few years. This article presents a comprehensive review of recent studies on UV-LEDs with various wavelengths for the inactivation of different microorganisms. Many inconsistent and incomparable data were found from published studies, which underscores the importance of establishing a standard protocol for studying UV-LED inactivation of microorganisms. Different UV sensitivities to UV-LEDs and traditional UV lamps were observed in the literature for some microorganisms, which requires further investigation for a better understanding of microorganism response to UV-LEDs. The unique aspects of UV-LEDs improve inactivation effectiveness by applying LED special features, such as multiple wavelengths and pulsed illumination; however, more studies are needed to investigate the influencing factors and mechanisms. The special features of UV-LEDs offer the flexibility of novel reactor designs for a broad application of UV LED reactors.

• 出版日期2016-5-1