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Production of Soild Fuel from Organic Waste Sludge by Vacuum Frying  

Park, Sang-Sook (Division of Civil and Environmental Engineering, Sunchon National University)
Kang, Hwa-Young (Department of Civil and Environment, Hanyeong Technical College)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.12, 2006 , pp. 1347-1351 More about this Journal
Abstract
It was tried to utilize organic waste sludge from wastewater treatment plant as a starting material to produce a solid fuel by vacuum flying. The effects of decompression levels, frying time and temperature on the calorific value and moisture of vacuum fried sludge were systematically investigated. Dewatered raw sludge used in this study had a moisture of 81.1% and calorific value of 2,930 kcal/kg. Based on the experimental observation, it was identified that the decompression level and frying time have the greatest influence on the calorific value of vacuum fried sludge. Moistures of the fried sludge at $180^{\circ}C$ for 25 min in 760 mmHg, 684 mmHg and 630 mmHg were 32.4%, 14.2% and 11.6%, respectively. Calorific values of the vacuum fried sludge at $140^{\circ}C$ for 15 min and 25 min were 5,400 kcal/kg and 5,540 kcal/kg in 684 mmHg and 5,520 kcal/kg and 5,660 kcal/kg in 630 mmHg, respectively.
Keywords
Solid Fuel; Vacuum Frying; Organic Waste Sludge; Calorific Value;
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