Study of Aerated Fluidized Bed Treatment of Wastewater Containing and Simulation of Flow Field of Internal Circulation System
Publication: Journal of Environmental Engineering
Volume 147, Issue 3
Abstract
Using the computational fluid dynamic numerical simulation method, the gas, liquid, and solid three-phase hydrodynamic behavior in a self-made aeration fluidized bed reactor was simulated numerically. The influence of gas inlet velocity and solid phase volume on gas holdup, solid holdup, and liquid circulation velocity in the reactor were studied. Treatment of wastewater by the self-made fluidized bed showed that when inlet velocity was and adsorbent dosage was 9.5%, the adsorption effect was the best, and the adsorption rate was 63.5%. Simulation results verified the experimental conclusions and clarified the interaction of the three phases of gas, liquid, and solid in the fluidized bed treatment of wastewater. The higher the air inlet speed, the lower was the solid content rate and the greater was the liquid circulation speed; at the same air inlet speed, the larger the solid phase volume, the higher was the solid content rate, the smaller was the solid phase volume, the greater was the liquid circulation speed, the higher was the gas holdup rate, and the higher was the utilization rate.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The work was supported by the National Natural Science Foundation of China (Nos. 51804265 and 51674208), the Open Fund (No. PLC20180803) of the State Key Laboratory Oil and Gas Reservoir Geology and Exploitation (Chengdu University of Technology), the Research Project of Nanchong Science and Technology Bureau (No. NC17SY4025), the Sichuan Province Science and Technology Innovation Young Plant Project (No. 2019078), the Extracurricular Open Experiment of Southwest Petroleum University (KSZ19419 and KSP19436), and the Bosheng Yongye Cup of the School of Chemistry and Chemical Engineering of Southwest Petroleum University (ZLFX-ZD-201906).
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Published In
Journal of Environmental Engineering
Volume 147 • Issue 3 • March 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Aug 31, 2020
Accepted: Oct 23, 2020
Published online: Dec 29, 2020
Published in print: Mar 1, 2021
Discussion open until: May 29, 2021
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