Concentration of pig slurry by evaporation: anaerobic digestion as the key process
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Nutrient redistribution between areas, with a structural pig slurry surplus and those with a shortage, is limited by the high cost of transportation and spreading, due to the high water content in slurry (more than 90%) and its relative low nutrient concentration. Water can be removed from slurry by evaporation, through the application of wasted heat from a power plant or from other processes. Apart from obtaining a concentrate with an obviously higher nutrient concentration than the original slurry, another objective is to obtain water as condensate, which could be reused
CitacióBonmatí, A.; Flotats, X. Concentration of pig slurry by evaporation: anaerobic digestion as the key process. A: World Congress of Solid Waste Anaerobic Digestion. "Proceedings of the 3th World Congress of Solid Waste Anaerobic Digestion". Munich: 2002, p. 1-4.
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