Record Display for the EPA National Library Catalog


Main Title Optimization of Biological Recycling of Plant Nutrients in Livestock Waste by Utilizing Waste Heat from Cooling Water.
Author Maddox, J. J. ; Behrends, L. L. ; Burch, D. W. ; Kingsley, J. B. ; Waddell, Jr, E. L. ;
CORP Author National Fertilizer Development Center, Muscle Shoals, AL.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-600/7-82-041;
Stock Number PB83-107763
Additional Subjects Agricultural wastes ; Cooling water ; Aquaculture ; Algae ; Steam electric power generation ; Nutrients ; Aquatic plants ; Water pollution ; Swine ; Fertilizers ; Anaerobic processes ; Digestion(Decomposition) ; Methane ; Waste heat utilization ; Manure ; Waste water reuse ; Steam power plants ; Biogas
Library Call Number Additional Info Location Last
NTIS  PB83-107763 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 154p
The report summarizes a 5-year study of the beneficial uses of waste heat from condenser cooling water from steam-electric generating plants. The major effort addressed the recovery of plant nutrients in swine manure by aquatic farming of selected fish and Chinese waterchestnuts. Another effort included biogas production from swine manure in an anaerobic digester and the use of the digester waste to fertilize the aquatic farming system. Optimum recovery of plant nutrients resulted from operation of an integrated fish and waterchestnut system. Flowing water systems were 30-50% more productive than static systems. Annual fish yields of 5000-7000 lb/acre are projected for a properly stocked system over a 150-180 day growing period. Similarly, waterchestnut yields of nearly 17.8 tons/acre and dry hay yields of 6.7 tons/acre from sand-bed filters would be expected when fed wastewater from the fish system. The quality of the water leaving the sand beds would meet tertiary wastewater treatment standards during the growing season. An estimated 2000-head swine facility with a $400,000 investment would annually produce a 20% rate of return, save 360,000 bbl of oil through waste heat utilization, and produce biogas equivalent to 3000 bbl of oil.