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http://dx.doi.org/10.11001/jksww.2012.26.6.897

Performance Evaluation of Hybrid SBR Aerobic Digestion combined with Ultrasonication by using a Mathematical Model  

Kim, Sung Hong (조선대학교 토목공학과)
Lee, Dong Woo (뉴엔텍(주) 기술연구소)
Kim, Dong Han (서원대학교 환경건설정보학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.26, no.6, 2012 , pp. 897-905 More about this Journal
Abstract
Based on the activated sludge model, a simple aerobic digestion model which represents the aerobic sludge digestion by sequencing batch reactor(SBR) equipped with ultrasonicator was composed and performed in this study. The results are as follows. Aerobic digestion efficiency can be increased by adopting ultrasonic pretreatment. For the 5 days of SRT, 24 % of particulate component is predicted to be removed by ultrasonic pretreatment and aerobic digestion. This is 7 %p higher than that of conventional aerobic digestion. A Hybrid SBR aerobic digestion combined with ultrasonication shows higher digestion efficiency than aerobic digestion and ultrasonic pretreatment system. In case of this hybrid system, the digestion efficiency was predicted up to 49 % when the ultrasonication was performed every 2 hours, repeatedly. However, excessive treatment like every hours of ultrasonication in an aerobic digestion process results in adverse effect on TCOD removal because biomass disintegrated completely and the solubilized COD can not be used for the biomass synthesis again.
Keywords
aerobic digestion; SBR; ultrasonication; activated sludge model;
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1 Bougrie r C., Carrere H. and Delgenes J.P. (1995) Solubilisation of waste-activated sludge by ultrasonic treatment, Chemical Engineering Journal, 106, pp.163-169.
2 Gujer W . and Henze M. (1991) Activated sludge modelling and simulation, Wat. Sci. Tech., 23(Kyoto), pp.1011-1023.
3 Gujer W ., Henze M., Mino T. and Loosdrecht M. (1999) Activated sludge model No. 3, Wat. Sci. Tech., 39(1), pp.183-193.   DOI   ScienceOn
4 Gujer W ., Henze M., Mino T., Matsuo T., Wentzel M.C. and Marais G.v.R. (1995) The activated sludge model no. 2:biological phosphorus removal, Wat. Sci. Tech., 31(2), pp.1-11.   DOI   ScienceOn
5 Hao O. J. and M.H. Kim (1990) Continuous pre-anoxic and aerobic digestion of waste activated sludge, ASCE, Env. Eng. Div., 116(5), pp.863-879.   DOI
6 Henze M., Gujer W., Mino T. and Loosdrecht M. (2007) Activated sludge models ASM1, ASM2, ASM2d and ASM3 - Ed. by IWA task group on mathematical modelling for design and operation of biological wastewater treatment, IWA publishing, UK.
7 Henze M., Gujer W., Mino T., Matsuo T., Wentzel M.C. and Marais G.v.R. (1995) Wastewater and biomass characterization for the activated sludge model No. 2: Biological phosphorus removal, Wat. Sci.Tech., 31(2), pp.13-23.   DOI   ScienceOn
8 MetCal f & Eddy (2004) Wastewater Engineering, Treatment and Reuse - 4th ed., McGrawHill, pp.1533-1546.
9 Kim D. H. and Chung T.H. (1999) Modeling and dynamic simulation for biological nutrient removal in a sequencing batch reactor(I), Journal of Korean Society of Water and Wastewater,, 13(3), pp.42-55.
10 Kim S. H., Kim H.J. and Chung T.H. (2002) Aerobic sludge digestion by intermittent aeration, Journal of Korean Society of Civil Engineers, 22(2-B), pp.245-252.
11 Kim J. H, Lee K.H., Nguyen Hai and Yeom I.T. (2011) Effects of ultrasonic pretreatment on sludge biodegradability, Journal of Korean Society of Water and Wastewater, 25(4), pp.611-616.
12 Ministr y of Environment (2010) 2009 statistical yearbook, Korean Ministry of Environment.