In the summer of 2014, Placer County Water Agency (PCWA) in California was facing a trihalomethane (THM) crisis. Drought across the western United...
Siemens will supply equipment to the 50-mgd treatment plant
Siemens Water Technologies has received a $2.9 million award to supply equipment for the new 50-million gal per day (mgd) Aurora Reservoir Water Treatment Plant, which is part of the Prairie Waters Project for the City of Aurora, Colo.
Water from the South Platte River will be piped 34 miles to the water purification plant, where it will undergo softening, filtration, ultraviolet light oxidation and activated carbon adsorption before being distributed.
The softening equipment supplied by Siemens includes four 12.5-mgd Contrafast high-rate sludge-thickening clarifiers for installation in concrete basins. Siemens will also supply 70 ESSD stainless steel wash troughs for placement in media filters and activated carbon adsorption cells. The project will provide a sustainable supply of high-quality water to meet the city’s demands into the 2020s.
Both of the city’s existing water treatment plants received the Phase 3, Director Award from the American Water Works Association (AWWA) Partnership for Safe Water, and the new plant is designed to continue to meet this commitment to water quality. The first phase of the new plant is scheduled for startup in 2010.
The city’s design consultant, CH2MHill, conducted a pilot test of softening and filtration systems. The results of these tests showed that Siemens’ equipment met the city’s standards for water quality, ease of operation and reliability.
“We have the stainless steel washtroughs from Siemens in our Wemlinger water treatment plant and wanted those included on this project,” Kevin Linder, treatment plant supervisor at the city of Aurora, said. “During pilot testing we were pleased with the Contrafast units’ ability to meet our treatment goals.”