Cogeneration feasibility study at the Washington County wastewater treatment plant. Final report

Technical Report · Sat Jan 01 04:00:00 EST 1994

OSTI ID:371081

Fischbeck, J; Veltman, S H

The report investigates the technical and economic feasibility of installing additional natural gas-fueled (augmented whenever possible with biogas produced in the sludge anaerobic digestion process) congeneration equipment at the Washington County Sewer District No. 2`s 2.0-MGD secondary wastewater treatment plant. This new cogeneration equipment, together with the existing 85-kW on-site cogeneration system, would serve as the plant`s primary energy source. Several cogeneration and thermal energy utilization options were evaluated including the use of natural gas-fueled engine generator sets, a steam turbine system, and a gas turbine system. Thermal energy utilization options evaluated include anaerobic digester heating, space conditioning, and indirect and direct thermal sludge drying systems to dry the sludge from approximately 19 percent to greater than 90 percent solids. The results of the matrix analysis and economic analysis show that the installation of additional cogeneration equipment at the wastewater treatment plant is currently not feasible. Cogeneration is the sequential use of a primary energy source to produce two useful forms of energy - heat and power. The plant`s power usage pattern and the absence of a large continuous thermal load do not permit the cost effective use of an expanded cogeneration system at the plant.

• Research Organization: Washington County Sewer District 2, Ford Edward, NY (United States)
• OSTI ID: 371081
• Report Number(s): PB--96-195102/XAB
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
09 BIOMASS FUELS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COGENERATION
COMBUSTION CONTROL
FEASIBILITY STUDIES
GAS TURBINES
METHANE
NATURAL GAS
REFUSE-FUELED BOILERS
STEAM TURBINES
WASTE PROCESSING PLANTS