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Micro-Bubble Generating Properties on Gas/Liquid Flow Rate Ratio with the Sludge Flotation/Thickening Apparatus
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 Title & Authors
Micro-Bubble Generating Properties on Gas/Liquid Flow Rate Ratio with the Sludge Flotation/Thickening Apparatus
Lee, Chang-Han; Park, Jong-Won; Ahn, Kab-Hwan;
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The sludge flotation/thickening apparatus equipped a micro-bubble generating pump was used to investigate micro-bubble generating properties on operational parameters. We evaluated micro-bubble generating properties as results to be operated the apparatus by operational parameters which are pump discharge pressure, air/water ratio(A/W ratio), air flow rate, and water flow rate. Micro-bubble generating efficiencies in pumps without recycling flow and with 50% of recycling flow was found to be very efficient on optimum A/W ratio from 1.06 to 3.62% and optimum A/W ratio from 1.05 to 4.06%, respectively. In condition of 3.6% of A/W ratio, we showed that the apparatus could be generated 36,000 ppm of micro-bubble concentration to be optimum treatment efficiency in sludge thickening process.
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미세기포 발생 펌프에서 생성되는 기포농도와 용존공기농도의 비교,이창한;안갑환;

Journal of Environmental Science International, 2014. vol.23. 11, pp.1835-1842 crossref(new window)
Bratby, J. R., Ambrose, W. A., 1995, Design and control of flotation thickeners, Wat. Sci. Tech., 31(3-4), 247-261.

Choi, Y. G., Chung, T. H., 2000, Effects of humus soil on the settling and dewatering characteristics of activated sludge, Wat. Sci. Tech. 42(9), 127-134.

Cleverson, V. A., Marcos S., Fernando F., 2007, Sludge Treatment and Disposal, IWA Publishing, 78-81.

Edzwald, J. K., 2010, Dissolved Air Flotation and Me, Wat. Res., 44(7), 2077-2106. crossref(new window)

Kwak, D. H., Kim, S. J., Lim, Y. H., Flotation Separation of Biological Floc Using the Dissolved Air Flotation Process, J. of the Korean Society of Water and Wastewater, 18(5), 649-655.

Kim, K. S., 2007, The Present State and Improvement of Sludge Disposal from Sewage Treatment Plants, 29(1), 8-16.

Park, S. C., Han, M. Y., Dockko, S., Kwon, S. B., 2006, Thickening of Sludge from DAF process by Flotation Application of Solid Flux Theory and Effective Factors, J. of the Korean Society of Water and Wastewater, 20(4), 617-626.

Rubio, J., Souza, M. L., Smith, R. W., 2002, Overview of flotation as a wastewater treatment technique, Miner. Eng., 15(3), 139-155. crossref(new window)

Ministry of Environment, 2004, Improvement of Drinking-Water Treatment Plant and Advanced Water Treatment Technology, 63-65.

Lee, C. H., An, D. M., Kim, S. S., Cho, S. H., Ahn, K. H., 2009a, Pretreatment Condition in the Full Scale Dissolved Air Flotation Process, KSEE, 31(1), 58-63.

Lee, C. H., Ahn, K. H., 2009b, Effect of Chemical Conditioning on Flotation and Thicken Properties of Sludge using a Microbubble generating Pump, KSEE, 31(8), 641-648.

An, D. M., Lee, C. H., Choi, Y. C., Cho, S. H., Ahn, K. H., Kim, S. S., 2002, Bubble Concentration and Flotation Efficiency in Domestic DAF Pump, Theories and Applications of Chemical Engineering, 8(1), 1553-1556.