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http://dx.doi.org/10.5322/JESI.2014.23.11.1835

Comparison of Dissolved Air and Micro-Bubble Concentration by a Micro-Bubble Generating Pump  

Lee, Chang-Han (Department of Environmental Administration, Catholic University of Pusan)
Ahn, Kab-Hwan (Department of Environmental Administration, Catholic University of Pusan)
Publication Information
Journal of Environmental Science International / v.23, no.11, 2014 , pp. 1835-1842 More about this Journal
Abstract
The goal of this study was to evaluate micro-bubble concentration ($C_{air}$) 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 $C_{air}$ are shown as a function of discharge pressure ($P_g$) of the micro-bubble generating pump. The correlation of the $C_{air}$ and the $P_g$ ($C_{air}=3.261P_g-1.754$) 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 $C_{air}$ was lower than theoretical dissolved air concentration ($C_{aq}$) calculated by Henry's law. The $C_{air}$ for being operated the micro-bubble generating pump was 6.75 - 39.53 mL/L, however, we found that the optimum of the $C_{air}$ to generate micro-bubble was the range from 10 to 12 mL/L.
Keywords
Micro-bubble; DAF; Saturator; A/W ratio; Henry's Law;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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