The newly upgraded WTTP in Colesburg was commissioned in August 2013, with all updates and additions successfully completed within the existing footprints. By building in the capability of storing peak flows within the lagoons, this compact size also helped to minimize the cost of the wastewater treatment plant improvements. While site delays pushed the start-up of the SAGR system into the fall, which is less than ideal for the establishment of nitrifiers, a coordinated effort between the city, Us, and Snyder and Associates resulted in a successful start-up with zero permit violations.
The system is designed with simplicity in mind. The O&M requirements of the SAGR are like the operation of a conventional aerated lagoon, with no solids return to monitor and adjust, making sludge management and disposal obsolete. Since commissioning, the operator in Colesburg spends an estimated average of 45 minutes per day doing routine inspection and maintenance, including blower maintenance, floating lateral adjustments, diffuser purging/cleaning, condensate purging/operate blow-offs and SAGR dual feed operation.
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