Whitley Burchett

New Directions for UV Disinfection

(Presented at the California WateReuse Annual Conference, Universal City, CA, February 2004)

Casey LeBlanc, Whitley Burchett & Associates

ABSTRACT

This presentation examines the changing environment facing those with an interest in UV disinfection of recycled water. Much of the past work was conducted to gain acceptance for site-specific UV systems. As more UV manufacturers are not only seeking acceptance for site-specific UV systems, but a broader acceptance for a UV technology applied to any site, the mode of selecting and testing UV systems is shifting. For technological acceptance, UV system validation by bioassay and velocity profiling is required. Now that more UV systems have technological acceptance, velocity profiling and other requirements have become the focus. This shift in focus has important impacts for those involved in selecting UV systems for disinfection and permitting tertiary recycled water facilities that include UV disinfection.