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Main Sewage Pump Motor Replacement

The Town of Amherst has secured Federal funding to replace three existing 25 years old electric motors and motor drives at the town's Main Influent Sewage Pumping Station located at 455 Tonawanda Creek.

The town has secured funding under the Federal Energy Efficiency and Conservation Block Grant (EECBG) to pay for the motor replacement.

In the existing Influent pump station, waste water is pumped via four (4) 50 million gallons per day (50 MGD) pumps. Three of the pumps are driven by 600 HP electric motors with eddy current drives. The fourth pump is driven by a natural gas engine. The existing drives, motors and associated 4,160V switch gear/control are over 25 years old and are fast approaching the end of their useful service life.

The town has commissioned an engineering study of the Main Influent Sewage Pump Motors, Couplers and Controls. The study recommended replacing the existing motors and drives with high efficiency motors and permanent magnet adjustable speed drives. The study shows total system efficiency will improve from the current 80%-90% to 94%-97%.

The town estimates the annual energy consumed by the three electrical pump motors can be over 10 million kWh. Energy savings of 15% should be possible by upgrading to high efficiency motors and drives. Consequently, this activity will realize annual savings of 1,500,000 kWh or 1,047,750 kg of CO2 equivalent emission reduced.