City of Aurora, Colo. to Purify Drinking Water with Trojan UV
Trojan Technologies, Inc. announced that it has been selected to provide an ultraviolet (UV) water treatment solution that will increase Aurora, Colo.’s capacity to provide pure, clean water to its residents. The planned 50 mgd Aurora Reservoir Water Purification Facility (ARWPF), part of the Prairie Waters Project, will utilize the TrojanUVPhox to both disinfect and act as a barrier to potentially harmful chemical contaminants in drinking water.
“Our customers demand safe, pure water and that is what we promise to deliver. UV-oxidation will ensure that we continue that commitment as we develop new water resources to provide for our community into the 21st century,” said Peter Binney, director of City of Aurora Water.
“We are excited about the application of this emerging technology as part of a multiple barrier purification approach,” said Paul Swaim, CH2M HILL’s Global Technology Leader for Water Treatment. “UV-oxidation offers significant benefits that will enhance the protection of public health for Aurora’s customers.”
The TrojanUVPhox was selected after a cost-benefit evaluation of potential purification approaches was conducted by the project team. Trojan UV-oxidation was selected for its proven ability to provide superior disinfection, accomplish treatment without creating disinfection by-products such as bromate, and act as a barrier to multiple contaminant classes such as taste and odor-causing compounds, pharmaceuticals, steroids, pesticides and nitrosamines.
Marvin DeVries, president of Trojan Technologies, said, “We are excited to be partnered with the city of Aurora in providing the UV solution for this ground-breaking project. More and more, municipalities are looking to address both biological and chemical contaminants. Trojan’s two environmental contaminant treatment solutions, the TrojanUVPhox and the TrojanUVSwiftECT, were specifically designed to accomplish treatment of environmental contaminants while simultaneously disinfecting. With these two product offerings, Trojan is committed to providing customers with the ultimate flexibility in selecting a solution that meets their specific needs.”
The TrojanUVPhox destroys a variety of chemicals including taste and odor-causing compounds such as MIB and geosmin, pharmaceuticals such as ibuprofen and acetaminophen, hormones such as estrogens and testosterone, pesticides such as atrazine and isoproturon, and the emerging contaminant class of nitrosamines that include N-nitrosodimethylamine (NDMA) and N-nitrosodiethylamine (NDEA).
All nitrosamines are effectively treated with UV light. Nitrosamines cannot be effectively treated with other advanced water treatment technologies such as activated carbon, reverse osmosis (RO), or ozone. At the federal regulatory level in the U.S., nitrosamines have recently been included on the EPA’s proposed Unregulated Contaminant Monitoring Rule 2 (UCMR 2). The state of California has set a Notification Level for NDMA at 10 parts per trillion and a Public Health Goal of 3 parts per trillion. In addition to its ability to destroy these chemicals, UV light treatment technologies are increasingly being used as part of a multi-barrier disinfection strategy for drinking water facilities because of their ability to cost-effectively treat microorganisms that are resistant to chlorine.
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