Main Wastewater Pump Station Rehabilitation, Ayer, MA

Tata & Howard prepared a wastewater treatment and disposal alternative analysis for the Town of Ayer. The analysis evaluated alternative plans for treatment and disposal of wastewater utilizing the Town’s existing wastewater treatment facility, a proposed regional wastewater treatment facility, or a combination of both facilities.

The alternative analysis estimated the wastewater flows and loadings, assessed the condition and capacity of the existing plant unit processes, and recommended improvements to meet the future service needs over the next 20 years. Tata & Howard designed upgrades to the existing main wastewater pump station which pumps the entire volume of wastewater generated in Ayer.

In addition to the overall rehabilitation of the pump station, Tata & Howard designed the addition of new pumping facilities to divert wastewater to the nearby regional wastewater treatment facility at the former Fort Devens, now managed by Mass Development. The main wastewater pump station has a peak capacity of 4.0 mgd and includes four wastewater pumps with a capacity of 2,800 gpm. The upgrades included new variable frequency drives for the pumps and new SCADA.