Abstract
The implementation of ultraviolet light (UV) disinfection in drinking water applications in the United States has gained momentum in recent years. An online survey and field sampling of full‐scale drinking water treatment plants (WTPs) were performed with a focus on evaluation of sequenced disinfection (UV and chlorine/chloramines). Twenty‐seven WTPs responded to the survey. Nearly all of these WTPs were treating an impaired water source (subject to upstream agricultural or wastewater discharges) and using UV with a design dose of 40 mJ/cm2 installed as part of a plant retrofit. The majority (n = 16) of the disinfection systems used polychromatic mediumpressure UV. Twelve WTPs applied all or part of their secondary disinfectant (free chlorine or chloramines) upstream of the UV reactor. The majority of the WTPs reported no effect on chlorine residual or formation of disinfection by‐products. Full‐scale sampling indicated minimal (±3 μg/L) change in trihalomethane formation resulting from UV disinfection during multiple sampling events.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
