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KMID : 1024520140230111835
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Journal of the Environmental Sciences
2014 Volume.23 No. 11 p.1835 ~ p.1842
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Comparison of Dissolved Air and Micro-Bubble Concentration by a Micro-Bubble Generating Pump
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Lee Chang-Han
Ahn Kab-Hwan
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Abstract
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The goal of this study was to evaluate micro-bubble concentration (��??? ) in water by air/water ratio (A/W ratio) with
a micro-bubble generating pump. The estimation of micro-bubble concentration is based on the balance of inlet/outlet
air and water flow rate. On net A/W ratio to be generated micro-bubble, we found that the obtained the ��??? are shown
as a function of discharge pressure (��? ) of the micro-bubble generating pump. The correlation of the ��??? and the () was adequately described by the least square methods with a high correlation coefficient (r =0.9459) and calculated values fit the experimental data quite well. The ��??? was lower than theoretical dissolved air
concentration (��?? ) calculated by Henry’s law. The ��??? for being operated the micro-bubble generating pump was 6.7539.53 mL/L, however, we found that the optimum of the ��??? to generate micro-bubble was the range from 10 to 12
mL/L.
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KEYWORD
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Micro-bubble, DAF, Saturator, A/W ratio, Henry's Law
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