Client: City of Schenectady
Location: Schenectady, NY
Service: General Construction
The first project BCI was contracted for consisted of a $7 million rehabilitation of the Schenectady County Waste Water Treatment Plant. Additions and renovation to the plant included treatment upgrades and a stand-alone cogeneration building. There was an installation of a 125 scfm combined heat and power (CHP) system that produces a biofuel supply to a 280 kw internal combustion engine generator. The new equipment allows the plant to generate an estimated 1,800 megawatt-hours of electricity per year from the biogas reducing its energy costs and greenhouse gas emissions. The equipment recaptures the waste heat from burning fuel and reuses it to sustain the biogas producing digestion process and provide heat to two buildings. The entire process also reduces odors and results in a finished product that can be used for compost. Work also included new technology that reduces the water content of sludge before processing, new equipment to insulate and seal the anaerobic chamber and equipment from corrosion. The Schenectady plant treats an average of 14 million gallons per day of wastewater and serves about 85,000 residents. BCI working with the plant staff were able to provide the required upgrades to the auxiliary sludge disposal building, digesters, digester control building, waste gas burner, main sludge disposal building and main electrical substation. BCI trade labor performed site work, cast-in-place concrete, rigging and equipment setting, yard piping and installation of new steel digester covers.
BCI was contracted a second time to demolish two existing belt filter presses, one dewatering centrifuge, and their associated control room in order to upgrade the plants processing capacity by installing two new dewatering centrifuges and constructing a new control room for them. New supporting polymer systems were installed along with upgrades to doors throughout the building. This was a $1.55 million project.