CDM, Carollo to design one of nation's largest UV systems for drinking water

CDM Inc., in partnership with Carollo Engineers, has been awarded a contract by the Greater Cincinnati Water Works (GCWW) to design and construct a 240-million-gallon-per-day (mgd), potable water ultraviolet light (UV) disinfection facility. The $14 million project, one of the largest UV disinfection systems for drinking water in the United States, will improve public health protection while keeping GCWW in the vanguard of the nation's water purveyors...

Ultraviolet light disinfection at 240-mgd facility will serve Cincinnati, OH, customers

CINCINNATI, OH, Oct. 2, 2006 -- CDM Inc., in partnership with Carollo Engineers, has been awarded a contract by the Greater Cincinnati Water Works (GCWW) to design and construct a 240-million-gallon-per-day (mgd), potable water ultraviolet light (UV) disinfection facility. The $14 million project, one of the largest UV disinfection systems for drinking water in the United States, will improve public health protection while keeping GCWW in the vanguard of the nation's water purveyors.

The new UV facility will be built at the Richard Miller treatment plant, a surface water plant that employs conventional surface water filtration, along with post-filtration granular activated carbon (GAC) adsorption for organics removal. The UV disinfection process will be installed between the GAC effluent and the finished water clearwells prior to addition of chlorine and corrosion control chemicals. UV plus chlorine will provide a multiple disinfection barrier for inactivating a variety of microbes, significantly improving public health protection.

This project includes a program to test and validate UV reactor performance onsite following design and construction of a new UV building. Following the pre-qualification of UV equipment vendors, a full-scale demonstration study will be conducted for approximately 12 months. The demonstration facility will be constructed to house one or two fully operational UV test trains, each rated at a design capacity between 25 and 60 mgd. Following onsite reactor validation and selection, the remaining UV reactor trains will be installed in the UV building under a second construction phase. The facility is scheduled to be commissioned and operational in 2011.

With headquarters in Cambridge, MA, CDM Inc. (www.cdm.com) is a consulting, engineering, construction, and operations firm delivering exceptional service to public and private clients worldwide. It employs more than 3,600 people.

Also see:
-- "CDM completes water supply well for Navajo Nation"
-- "CDM participates in U.S. Mayors Conference on climate change"
-- "CDM workshop at IWA Congress forecasts future of water industry"

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