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Particle Separation and Flotation Efficiency by Dissolved Carbon Dioxide Flotation Process  

Kwak, Dong-Heui (서남대학교 환경화학공학과)
Kim, Seong-Jin (한영대학 환경과)
Jung, Heung-Jo (신경대학교 생명공학과)
Park, Yang-Kyun (서남대학교 환경화학공학과)
Yoo, Young-Hoon (서남대학교 환경화학공학과)
Lee, Young-Dong (전북대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.25, no.4, 2011 , pp. 471-478 More about this Journal
Abstract
A series of laboratory experiments carried out to investigate the particle separation efficiency and flotation characteristics using $CO_2$ bubbles. The primary objective of this study was to find out the feasibility of $CO_2$ bubbles as an applicable unit of flotation process in tap-water and wastewater treatment plant. The fundamental measurements were conducted to characterize the $CO_2$ bubble from the physical viewpoint in water including bubble size distribution and rising velocity under various operational conditions. In addition, the removal efficiency of solid was experimented using the lab scale plant applied $CO_2$ bubbles, namely the dissolved carbon dioxide flotation (DCF) process. The DCF process using carbon dioxide bubble, which is an advantage as the decrease and the reuse of Green-House gas, can be a promising technology as an water treatment process. On the other hand, the further research to decrease the bubble size distribution of $CO_2$ is required to enhance the particle separation efficiency.
Keywords
flotation; Carbon dioxide; Micro-bubble; DCF; Particle separation;
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  • Reference
1 Arnold SR, Grubb TP, Harvey P. J. (1995), Recent applications of dissolved air flotation pilot studies and full scale design. Water Science Technology, 31(3-4), 327-340.   DOI   ScienceOn
2 Cassell E. A. et al., (1969), Removal of organic colloids by microflotation, Water and Wastewater Engineering, 6(C7), 103-112.
3 Dahlquist, J. (1997) The state of DAF development and application to water treatment in Scandinavia. Dissolved Air Flotation. Chartered Institution of Water and Environmental Management, London, Conference Proceedings.
4 Edzwald, J. K and Walsh, J. P. (1982), Dissolved Air Flotation : Laboratory and Pilot Plant Investigations, AWWA Research Foundation and AWWA, U.S.A.
5 Edzwald, J. K. (1993), Algae, Bubble, Coagulants and Dissolved Air Flotation, Water Science and Technology, 10, 67-81.
6 Edzwald, J. K. (1995), Principles and Applications of Dissolved Air Flotation, Water Science Technology, 31(3-4), 1-23.   DOI
7 Hyde, R. A., Miller, D. G., Packham R. E. and Richards, W. N. (1977), Water clarification by flotation, J. AWWA, 69, 369-374.   DOI
8 Han M.Y., Park Y. H. and Yu T.J. (2002) Development of new method of measuring bubble size. Water Science and Technology: Water Supply, 2(2), 77-83
9 Grieves R. B., et al., 1970, "Foam Separation Clarification of Natural Waters", Journal of AWWA, 62(5), 304-311.   DOI
10 Kawamura, S., 1991. Effectiveness of natural polyelectrolytes in water treatment. J. AWWA. 10, 88-91.
11 Krofta, M. and Wang, L. K., 1982, Potable Water treatment by dissolved air flotation and filtration, Journal of America Water Works Association, 74, 304-310.
12 Kwak, D. H. and Dockko, S. (2003), Effect of controlling the of microbubble in DAF. Proceeding of 2nd International Workshop on Flotation, B-5, 157-167.
13 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 Model in DAF Process, Journal of Water Supply: Research and Technology-AQUA, 58(2), 85-94.
14 Magravite, Jr. F. J., Cassell, E. A. and Matijević, E., 1972, The microflotation of silica, Journal of Colloid and Interface Science, 39(2), 357-366.   DOI   ScienceOn
15 Zabel, T., 1985, Advantages of dissolved-air flotation for water Treatment. J. AWWA. 77, 42-45.