Optimization of biological recycling of plant nutrients in livestock waste by utilizing waste heat from cooling water
Results are presented from a 5-year study to develop aquatic methods which beneficially use condenser cooling water from electric generating power plants. A method is proposed which uses a system for aquatic farming. Livestock waste is used to fertilize planktonic algae production and filter-feeding fish are used to biologically harvest the algae, condenser cooling water (simulated) is used to add waste heat to the system, and emergent aquatic plants are used in a flow through series as a bio-filter to improve the water quality and produce an acceptable discharge. Two modes of operation were tested; one uses untreated swine manure as the source of aquatic fertilizer and the other uses anaerobic digester waste as a means of pretreating the manure to produce an organic fertilizer. A set of operating conditions (temperature, retention time, fish stocking rate, fertilizer rates, land and water requirements, suggested fish and plant species, and facility design) were developed from these results. The integrated system allows continual use of power plant condenser cooling water from plants in the southeastern United States.
- Research Organization:
- Tennessee Valley Authority, Muscle Shoals, AL (USA). Div. of Agricultural Development
- OSTI ID:
- 6433411
- Report Number(s):
- TVA/PUB-83/28; EPA-600/7-82-041; ON: DE83901674
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
20 FOSSIL-FUELED POWER PLANTS
AQUACULTURE
ECONOMIC ANALYSIS
ENVIRONMENTAL IMPACTS
FISHES
THERMAL POWER PLANTS
ALGAE
ANAEROBIC DIGESTION
BIOGAS PROCESS
CONDENSERS
COOLANTS
EXPERIMENTAL DATA
FERTILIZERS
MANURES
NUTRIENTS
RECYCLING
SEASONAL VARIATIONS
SWINE
USES
WASTE HEAT
WATER
WATER QUALITY
AGRICULTURAL WASTES
ANIMALS
AQUATIC ORGANISMS
BIOCONVERSION
DATA
DIGESTION
DOMESTIC ANIMALS
ECONOMICS
ENERGY
ENVIRONMENTAL QUALITY
HEAT
HYDROGEN COMPOUNDS
INFORMATION
MAMMALS
MANAGEMENT
NUMERICAL DATA
ORGANIC WASTES
OXYGEN COMPOUNDS
PLANTS
POWER PLANTS
PROCESSING
VARIATIONS
VERTEBRATES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
520100* - Environment
Aquatic- Basic Studies- (-1989)
320304 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization
200201 - Fossil-Fueled Power Plants- Waste Management- Thermal Effluents