Binghamton-Johnson City joint sewage treatment plant cogeneration project. Final report

Technical Report · Mon Feb 01 04:00:00 EST 1993

OSTI ID:381552

This report describes a cogeneration system implemented at a wastewater treatment plant in Vestal, New York. The system consists of a 200 kW spark-ignited reciprocating engine driving an induction type electric generator. Also included in the system are two heat exchangers used to recover thermal energy from the engine. Thermal energy recovered is transferred to a system that heats wastewater sludge prior to the sludge being admitted to anaerobic digestion units. The digestion units produce the fuel used in the engine, a medium Btu fuel consisting primarily of methane and carbon dioxide, with a heating content of approximately 650 Btu per standard cubic foot. Use of the digester gas in the engine reduces the amount of excess digester gas burned in a flare. Electricity generated is used in the plant to reduce purchases from the electric utility. The report describes the unit operations at the plant and their energy uses, opportunities for saving energy, the cogeneration system equipment installed, implementation issues including capital costs and events during the 1986-1987 construction, results of operation during a 12 month period of monitoring, and an economic analysis of the project.

• Research Organization: SCS Engineers, Inc., West Nyack, NY (United States)
• OSTI ID: 381552
• Report Number(s): PB--96-200464/XAB
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COGENERATION
WASTE PROCESSING PLANTS