Calgon Carbon Corporation announced recently that it has been awarded a contract from the city of Scottsdale, Ariz., to supply granular activated carbon (GAC) and provide related services for two new water treatment facilities. The value of the contract is $2.3 million. The city may renew the contract for up to four additional years.
Under terms of the one-year contract, Calgon Carbon will supply GAC and provide reactivation and related services for two new potable water treatment facilities, the Chaparral Water Treatment Plant and the Central Arizona Project Water Treatment Plant, which can process approximately 100 million gal of water per day.
“Including reactivation services as a component to this contract made sense not only financially, but environmentally as well,” said Arthur Nunez, water & wastewater treatment director of the city of Scottsdale.
The two water treatment facilities were primarily constructed in response to the U.S. Environmental Protection Agency’s Stage 2 Disinfection Byproducts (DBP) Rule, which was promulgated in 2006. The DBP rule establishes maximum levels at which DBPs are permitted to be present in drinking water. DBPs are potentially harmful compounds that are formed when chlorine used to disinfect drinking water reacts with naturally occurring organic materials in the water. By removing the organic materials, activated carbon prevents DBPs from forming.
The contract from the city of Scottsdale is the first major award to Calgon Carbon for products and services to control DBPs in drinking water. The company estimates that the DBP rule could result in the installation of more than 600 new activated carbon systems in the U.S.
Commenting on the announcement, Bob O’Brien, senior vice president of Calgon Carbon, said, “We are pleased that the city of Scottsdale has chosen Calgon Carbon’s products and services to support its progressive approach for drinking water treatment. We look forward to providing similar support to other communities in their efforts to comply with the Stage 2 Disinfection Byproducts Rule.”
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