Analysis of the Influencing Factors on Oil Removal Efficiency in Large-Scale Flotation Tanks: Experimental Observation and Numerical Simulation

Qian Huang and Xueyuan Long
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Qian Huang: School of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Xueyuan Long: School of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing 401331, China

Energies, 2020, vol. 13, issue 4, 1-14

Abstract: A modified computational fluid dynamic (CFD) model has been developed to obtain oil removal efficiency for oily wastewater treatment in large-scale flotation tanks. According to the investigation of oil droplet/bubble interactions in a flotation tank, a modified Bloom–Heindel model is used to calculate the collision and attachment efficiencies between oil droplets and bubbles. Effects of the gas flow rate, oil diameter and oil concentration on oil removal efficiency of flotation tank were analyzed experimentally. The application scope of this modified CFD model is evaluated using experimental results. In addition, the comparison between the existing model and the modified model demonstrates that this modified CFD model can make a good prediction for the separation performance of the flotation tank.

Keywords: oil removal efficiency; flotation tank; computational fluid dynamics; oil droplet; gas bubble (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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