Effect of Application of Streamline and Mobility Function on Bubble-Floc Collision Efficiency for Trajectory Analysis of DAF Process

DAF공정의 궤적분석에서 유선과 운동함수의 적용이 기포와 플록의 충돌효율에 미치는 영향

  • Kim, Seong-Jin (Division of Environmental and Chemical Engineering, Seonam University) ;
  • Kwak, Dong-Heui (Department of Sanitary Environmental Engineering, Seonam University) ;
  • Lim, Young-Hwan (Department of Sanitary Environmental Engineering, Seonam University)
  • 김성진 (여수한영대학 보건환경과) ;
  • 곽동희 (서남대학교 환경화학공학부) ;
  • 임영환 (서남대학교 환경화학공학부)
  • Received : 2004.10.02
  • Accepted : 2004.10.21
  • Published : 2004.11.30

Abstract

Many researchers have been carrying on study to figure out the exact collision efficiency between bubble and floc. Collision efficiency can has generally been quantified by using trajectory analysis which uses the hydrodynamic, the electrostatic and van der waals forces. Two types of method are considered to induce the hydrodynamic force in the trajectory analysis. One is to use stream function and the other is to use mobility function. There was some difference between stream and mobility function depending upon modelling factors and conditions in trajectory analysis.

Keywords

References

  1. 곽동희, 김성진, 이화경, 정흥조, 이재욱, 정팔진, DAF 공정에서 무기 고형입자의 유체역학적 충돌효율과 부상특성, 상하수도 학회지, 16(6), pp. 655-662 (2002)
  2. 곽동희, 이재욱, 한무영, DAF공정에서의 개체군수지에 의한 무기성 입자거동의 해석, 상하수도학회지, 17(2) pp. 517-527 (2003)
  3. Han M.Y., Modeling of DAF:the effect of particle and bubble charicteristics, Journal of water Supply: Research and Technology-AQUA, 51(1), pp. 27-34 (2001)
  4. Han, M.Y., Dockko S., Zeta potential measurement of bubbles in DAF process and its effect in the removal efficiency, Journal of Water Supply, 34, pp. 177-182 (1999)
  5. Jeffrey, D. J., Onishi, Y, Calulation of the Resistance and Mobility functions for Two unequal Rigid Spheres in Low Reynolds Number flow, Journal of Fluid Mech., 139, pp. 261-290 (1984)
  6. Leppinen, D. M., Trajectory analysis and collision efficiency during microbubble flotation, Journal of Colloid and Interface Science, 12, pp. 431-442 (1999)
  7. Malley, J. P., Edzwald, J. K., Conceptual Model for Dissolved-Air Flotation in Drinking Water Treatment, Journal of Water SRT-AQUA, 40(1), pp. 7-17 (1991)
  8. Malley, J. P., Removal of organic halide precursors by dissolved-air flotation in conventional water treatment, J. of Environmental Technology, 11, pp. 1161-1167 (1990)
  9. Tambo, N. and Fukushi, K., A kinetic study of dissolved-air flotation, Journal of JWWA, 606, pp. 22-30 (1985)
  10. Yoon, R. H., Luttrell, G. H., Mineral Process, Extract. Metall. Rev., 5, p. 101 (1989)
  11. Yotsumoto, J., Yoon, R. H., Application of Extended DLVO Theory, Journal of Colloid Interface Sci., 57, pp. 426-441 (1993)