Ecotope Group and Parametrix Inc. process feasibility study: the anaerobic digestion of dairy cow manure at the State Reformatory Honor Farm, Monroe, Washington
The residents of the state reformatory are constructing a digestion system capable of handling the wastes of the 400 head dairy herd housed on the farm. The system is comprised of two Harvestore tanks of 378 m/sup 3/ capacity (loaded at 3.5 g VS/1/day at a 17 day detention time), manure holding pits, effluent storage, gas compressor, propane tanks to hold the compressed gas (a half-day's output at 1.7 x 10/sup 5/ kg/m/sup 2/), and heat exchangers between effluent and influent lines and in the gas recirculation system. Total estimated cost, using a maximum amount of ''free'' labor and donated or reduced-cost equipment, is estimated to be $71,040, which can be repaid in ten years through savings in fuel and fertilizer costs (calculated using contemporary fuel and fertilizer costs, and an interest rate of 7%). This summary skeleton is fleshed out in the book by a welcome literature review, design calculations, and tabulations of costs in dollars and energy. The calculations and substantiations of the reasoning cover the events from the point the waste hits the gutter to the time the effluent is spread on the farm fields. This eight dollar book presents a clear and substantiated engineering design study which, although the particulars are tied to the situation at the reformatory farm, gives the figures, calculations, and design process which would be informative and educational to others considering construction of such a system.
- OSTI ID:
- 5066149
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHEMICAL REACTORS
CONSTRUCTION
MANURES
ANAEROBIC DIGESTION
METHANE
BIOSYNTHESIS
COWS
FEASIBILITY STUDIES
AGRICULTURAL WASTES
ALKANES
ANIMALS
BIOCONVERSION
CATTLE
CRYOGENIC FLUIDS
DIGESTION
DOMESTIC ANIMALS
FLUIDS
HYDROCARBONS
MAMMALS
MANAGEMENT
ORGANIC COMPOUNDS
PROCESSING
RUMINANTS
SOLID WASTES
SYNTHESIS
VERTEBRATES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)