Ontario Power Generation Controls Invasive Mussels Using Environmentally Friendly Hydro-Optic UV Disinfection Technology

Hydroelectric & Cooling Water

The Ontario Power Generation (OPG) DeCew II Generating Station, part of Niagara Operations in St. Catharines, Ontario, is a hydroelectric generating station with a nameplate capacity of 144 MW. The station has been in operation since 1943. Following the spread of zebra and quagga mussels to the Great Lakes in 1988, OPG installed chlorination systems in the early 1990s to mitigate this threat. In an effort to evaluate innovative, environmentally friendly and cost-effective methods of controlling invasive zebra mussels, OPG installed and commissioned the Hydro-OpticTM (HOD) ultraviolet (UV) system in May 2017. The six-month pilot study was a full-scale demonstration of an environmentally friendly, non-chemical disinfection method to control invasive mussels at the DeCew II Generating Station.

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