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http://dx.doi.org/10.3795/KSME-B.2017.41.6.415

Comparison Study on Empirical Correlation for Mass Transfer Coefficient with Gas Hold-up and Input Power of Aeration Process  

Park, Sang Kyoo (School of Mechanical Design Engineering, Chonnam Nat'l Univ.)
Yang, Hei Cheon (School of Mechanical Design Engineering, Chonnam Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.6, 2017 , pp. 415-421 More about this Journal
Abstract
As stricter environmental regulation have led to an increase in the water treatment cost, it is necessary to quantitatively study the input power of the aeration process to improve the energy efficiency of the water treatment processes. The objective of this study is to propose the empirical correlations for the mass transfer coefficient with the gas hold-up and input power in order to investigate the mass transfer characteristics of the aeration process. It was found that as the input power increases, the mass transfer coefficient increases because of the decrease of gas hold-up and increase of Reynolds number, the penetration length, and dispersion of mixed flow. The correlations for the volumetric mass transfer coefficients with gas hold-up and input power were consistent with the experimental data, with the maximum deviation less than approximately ${\pm}10.0%$.
Keywords
Aeration Process; Mass Transfer Coefficient; Gas Hold-up; Input Power; Reynolds Number;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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