Innovative UV-C LED Disinfection Systems for DrinkingWater Treatment

This paper describes the testing of two UV-C LED water disinfection pilot-scale units at the U.S. Environmental Protection Agency (EPA) Test and Evaluation Facility in Cincinnati, OH from December 2018 to October 2019. The pilot-scale testing included collimated beam testing and flow-through testing for both drinking water and municipal wastewater. The challenge test runs targeted MS-2 bacteriophage, total coliforms, heterotrophic plate count (HPC), Bacillus globigii, and Legionella in drinking water, and E.coli, Enterococci, total coliforms, HPC, and Bacillus globigii in municipal wastewater. The paper presents the results for MS-2 bacteriophage, total coliforms and HPC in drinking water.