Xylem, a water technology company, has won $4.8m worth contracts to supply ultraviolet (UV) disinfection solutions to two drinking water plants in Columbus, Ohio.
The UV technologies will be used to serve as an additional treatment barrier for Cryptosporidium at the 80 MGD Dublin Road Water Plant and 125 MD Hap Cremean Water Plant.
Cryptosporidium is a chlorine-resistant parasite found in water that can cause illness with potentially severe symptoms. The parasite can be inactivated with a low UV dose.
The Hap Cremean Water Plant needed a complex retrofit into the existing filter pipe gallery. This plant required a compact UV reactor that would not only enable maintenance activities to be undertaken but also a few modifications to the existing piping arrangement. Further, this plant required a UV system that could achieve the required disinfection standard while maintaining less than 20 inches of head loss so that the hydraulic profile would not be disturbed.
Xylem supplied 24 Spektron 2000e UV reactors, thereby addressing the challenges posed by the retrofit in addition to offering reliable disinfection.
The Dublin Road Water Plant required a UV disinfection system that would minimise head loss to avoid additional pumping costs but maximise clearwell volume. Xylem supplied five Wedeco K143 UV reactors to address this challenge.
City of Columbus Division water project manager for the UV project C.R. Weaver said: “The UV facilities will provide an additional treatment barrier at the Dublin Road Water Plant and Hap Cremean Water Plant, enhancing our disinfection capabilities and allowing us to continue to provide safe, reliable, and affordable drinking water for all our customers.”
Xylem North America director of treatment sales Greg Claffey said: “At Xylem, we do not simply provide ‘one size fits all’ solutions; we work closely with our customers to create smart, sustainable solutions to their unique, complex water challenges. Our proven Wedeco UV technology was selected because it delivered the lowest life-cycle cost, primarily due to the energy efficiency of its low-pressure high-output (LPHO) Wedeco Ecoray lamps and the relative low head loss of the UV reactors. Furthermore, we were able to overcome the challenging requirements associated with the Hap Cremean plant retrofit.”
Construction of the UV system at both facilities is expected to begin in 2018. The UV systems at the two plants will become operational in 2020.
from Water Technology-Updates http://ift.tt/2fr9Jkl
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