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http://dx.doi.org/10.17663/JWR.2013.15.2.165

The Recovery of Carbon Source from Municipal Primary Sludge using Pilot Scale Elutriated Acidogenic Fermentation  

Kwon, Kooho (Department of Environmental Engineering, Kyungpook National University)
Kim, Siwon (Department of Environmental Engineering, Kyungpook National University)
Jung, Yongjun (Department of Environmental Engineering, Catholic University of Pusan)
Min, Kyungsok (Department of Environmental Engineering, Kyungpook National University)
Publication Information
Journal of Wetlands Research / v.15, no.2, 2013 , pp. 165-170 More about this Journal
Abstract
Pilot scale study was carried out to produce Volatile Fatty Acids with primary sludge from municipal wastewater treatment plant. An acid fermenter was operated at pH 9, $35^{\circ}C$, SRT of 3.5-4.25d, using a final effluent as elutriating water(Mode-I) and pH 9, SRT 5d, temperature of $35^{\circ}C$(Mode-II), $55^{\circ}C$(Mode-III), using a primarily treated water as elutriating water. Although solubilization rate was enhanced with the increase of temperature, the VFAs production rate was decreased. The VS reduction was shown approximately 56%, and the sludge volume reduction was 93%. The optimal conditions for solubilization was obtained at pH 9, $35^{\circ}C$ and SRT of 5d.
Keywords
Acid Fermentation; Organic Waste; Sewage Primary Sludge; Solubilization;
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