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KMID : 1024520140230010097
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Journal of the Environmental Sciences
2014 Volume.23 No. 1 p.97 ~ p.104
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Micro-Bubble Generating Properties on Gas/Liquid Flow Rate Ratio with the Sludge Flotation/Thickening Apparatus
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Lee Chang-Han
Park Jong-Won
Ahn Kab-Hwan
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Abstract
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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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KEYWORD
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Microbubble, Pump, DAF, Sludge, Thickening
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