Spencer Wastewater Treatment Plant Upgrade - Spencer, MA

The work consists of various improvements to the Wastewater Treatment Plant to address upcoming phosphorus and copper limits, achieve nitrogen removal goals, and replace aging infrastructure. Major work of the project includes construction of a new Tertiary Treatment building to house phosphorus removal equipment, UV disinfection equipment, chemical storage tanks, return activated sludge pumps and plant water pumps; construction of a new secondary clarifier; construction of a new secondary clarifier distribution box; construction of a new aeration tank; construction of a new aeration tank distribution box; replacement of the influent screen; a new grit removal system; new submersible influent pumps; installation of equipment for nitrogen removal; renovations to an existing building to create lab space; renovations to existing tanks and construction of new infrastructure for improved septage receiving and storage; renovations to an existing sludge storage tank; installation of new sludge thickening equipment; construction of a new thickened sludge storage tank; major renovations to the existing Control Building; construction of a new dry chemical storage silo for alkalinity addition; site work and underground utility work to support the various improvements at the plant; and the various sub-trade work required to support the project including major electrical, HVAC and Plumbing improvements.


Delivery Method: Design, Bid, Build

Start Date: August 2022

Contract Value: $41 Million

Owner: City Of Spencer, MA

Engineer: Tighe & Bond