한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제28권1호
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  • Pages.129-136
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  • 2012
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  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

단일포집자충돌(SCC) 모델을 이용한 이산화탄소기포의 입자분리특성과 부상효율 평가

Evaluation of Flotation Efficiency and Particle Separation Characteristics of Carbon Dioxide Bubbles using Collision Efficiency Model

  • 이준용 (전북대학교 환경공학과) ;
  • 김성진 (여수한영대학 보건환경학과) ;
  • 유영훈 (전북대학교 환경공학과) ;
  • 정팔진 (전북대학교 환경공학과) ;
  • 권영호 (서남대학교 환경화학공학과) ;
  • 박양균 (서남대학교 환경화학공학과) ;
  • 곽동희 (서남대학교 환경화학공학과)
  • Lee, Jun-Young (Department of Environmental Engineering, Chonbuk National University) ;
  • Kim, Seong-Jin (Department of Health and Environmental Engineering, Yosu Hanyong College) ;
  • Yoo, Young-Hoon (Department of Environmental Engineering, Chonbuk National University) ;
  • Chung, Paul-Gene (Department of Environmental Engineering, Chonbuk National University) ;
  • Kwon, Young-Ho (Department of Environmental and Chemical Engineering, Seonam University) ;
  • Park, Yang-Kyun (Department of Environmental and Chemical Engineering, Seonam University) ;
  • Kwak, Dong-Heui (Department of Environmental and Chemical Engineering, Seonam University)
  • 발행 : 2012.01.30
⟨ 이전 논문 다음 논문 ⟩

초록

In this century, scientists realized that carbon dioxide gas in the atmosphere cause a greenhouse effect which affects the planet's temperature. Therefore lots of attempts have carried out to decrease the discharge of carbon dioxide gas in the field. The dissolved carbon dioxide flotation (DCF) process was developed as an alternative of DAF process to decrease the discharge and reuse of carbon dioxide as well as to save energy consumption. To investigate the particle separation characteristics and the flotation efficiency of carbon dioxide, SCC model was employed in the DCF process which has been applied extensively for the evaluation and simulation in the DAF process. The simulation results by the SCC model revealed the predicted curve of flotation efficiency became decreased gradually over the optimal pressure range of saturator about 1.6 atm in accordance with the experiment results of the DCF pilot plant and the size distribution and the bubble volume concentration of $CO_{2}$ bubbles depending on the operation pressure of saturator. The findings through the simulation results led to the conclusion that there was no significant difference between $CO_{2}$ bubbles and air bubbles, affecting on the practical flotation efficiency, in terms of the initial collision and attachment efficiency.

키워드

참고문헌

  1. 곽동희, 김성진, 정흥조, 박양균, 유영훈, 이영동(2011). 용존 이산화탄소공정의 입자분리특성과 부상효율, 상하수도학회지, 25(4), pp .471-478.
  2. 김성진, 곽동희, 임영환(2004), DAF공정의 궤적분석에서 유선과 운동함수의 적용이 기포와 플록의 충돌효율에 미치는 영향, 수질보전 한국물환경학회지, 20(6), pp. 676-684.
  3. Flint, L. R. and Howarth, W. J. (1971). The Collision Efficiency of Small Particles with Spherical Air Bubbles, Chemical Engineering Science (G.B.), 26, pp. 1155.
  4. Freidlander, S. K. (1977). Smoke, Dust and Haze - Fundamentals and Aerosol Dynamics (2nd Edition), John Wiley and Sons, New York, N.Y. pp. 222-245.
  5. Ho, N. F. H. and Higuchi, W. I. (1968). Preferential Aggregation and Coalescence in Heterodispersed System, Journal of Pharmaceutical Science, 57(3), pp. 436-442.
  6. Hogg, R., Healy, T. W., Fuerstenau, D. W. (1966). Mutual Coagulation of Colloidal Dispersions, Transactions of the Faraday Society, 62, pp. 1638-1651.
  7. Kwak, D. H. and Dockko, S. (2003). Effect of Controlling of the Microbubble in DAF, Proceeding of 2nd International Workshop on Flotation, Korean Society of Water and Wastewater, Seoul, Korea, B-5, pp. 157-167.
  8. Kwak, D. H., Jung, H. J., Kim, S. J., Won, C. H., and Lee, J. W. (2005). Separation Characteristics of Inorganic Particles from Rainfalls in Dissolved Air Flotation: A Korean Perspective, Separation Science and Technology, 40, pp. 3001-3016.
  9. Kwak, D. H., Jung, H. J., Kwon, S. B., Lee, E. J., Won, C. H., Lee, J. W., and Yoo, S. J. (2009). Rise Velocity Verification of Bubble-floc Agglomerates Using Population Balance in DAF Process, Journal of Water Supply Research and Technology-Aqua, 58(2), pp. 85-94
  10. Kwak, D. H., Kim, S. J., Jung, H. J., Won, C. H., Kwon, S. B., Ahn, H. W., and Lee, J. W. (2006). Removal of Clay and Blue-green Algae Particles through Zeta Potential and Particle Size Distribution in Dissolved Air Flotation Process, Water Science and Technology: Water Supply, 6(1), pp. 95-103.
  11. Kwak, D. H., Yoo, Y. H., Yoo, D. H., Kim, S. J., and Kim, M. S. (2011). Application Of Carbon Dioxide Bubbles as a Particle Collector for Flotation Process in Water Treatment, Proceeding of ISWA World Congress 2011, International Solid Waste Association, Daegu, Korea, P-R-18, pp. 18.
  12. Levich, V. G. (1962). Physicochemical Hydrodynamics, Prentice-Hall, pp. 213-434.
  13. Malley, J. P. and Edzwald, J. K. (1991). Conceptual Model for Dissolved-Air Flotation in Drinking Water Treatment, Journal of Water SRT-AQUA, 40(1), pp. 7-17.
  14. O'Melia, C. R. (1980). Aquasols: the Behavior of Small Particles in Aquatic Systems, Environmental Science and Technology, 14, pp. 1052.
  15. O'Melia, C. R. (1985). Particles, Pretreatment Performance in Water Filtration, Journal of Environmental Engineering, 111, pp. 874.
  16. Reay, D. and Ratcliff, G. A. (1973). Removal of Fine Particles with Spherical Air Bubbles, Journal of Chemical Engineering, 51(178), pp. 206.