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RECOVERY PROCESS FOR FOOD SKIMMINGS FROM DISSOLVED AIR FLOTATION UNITS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 237-241 in the Ninth International Animal, Agricultural and Food Processing Wastes Proceedings of the 12-15 October 2003 Symposium (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003. 701P1203.(doi:10.13031/2013.15256)
Authors: John H. Lee
Keywords: Land application, By-product recovery, Waste treatment, Protein, Fat, Dissolved air flotation, Food skimmings
Food skimmings from DAF (dissolved air flotation) units are major waste materials from food
processes such as meat and milk processing and waste water treatment plants. These materials
are paste and oily. Land application of skimmings alone or mixture with other by-products for
cooking are used currently. Land application potentially cause pollution problems to land, water
and air. The mixture and cook with other by-products affect the quality of the final protein and
fat by-products. The skimmings have only 10-20 % solid. The dry cost is high for the cooking
process. These two current processes are not economically feasible methods.