Modelling of hydrodynamic cavitation for treatment of wastewater in a Venturi tube

Betti Bolló

doi:10.14232/analecta.2020.1.61-66

Authors

Betti Bolló University of Miskolc, Department of Fluid and Heat Engineering https://orcid.org/0000-0001-8342-827X

DOI:

https://doi.org/10.14232/analecta.2020.1.61-66

Keywords:

hydrodynamic cavitation, Venturi, CFD, cavitation number

Abstract

Treatment of municipal effluents has long been a challenge for modern technologies combining high effectiveness of degradation of pollutants with low costs of the process. Hydrodynamic cavitation is a promising application in wastewater treatment due to its simple reactor design. In this work, for a system available in the laboratory a hydrodynamic reactor is designed based on literature recommendations. On the designed Venturi tube, two-dimensional numerical simulations were investigated by the means of CFD computations using the commercial software package, Ansys Fluent. The resulting cavitation bubbles were analysed at different inlet pressures.

Downloads

Download data is not yet available.

References

Strategy 2014 Consortium: Sewage Sludge Management and Recovery Strategy 2014-2023, Hungarian.

Establishing products range from bio raw materials with the special regard to a local technological flowsheet. GINOP-2.2.1-15-2017-00069 R&D Project. Project Leader: Dr. Ljudmilla Bokányi.

Pankaj, M. Ashokkumar, Theoretical and Experimental Sonochemistry Involving Inorganic Systems, Springer 2011.

P. Braeutigam, M. Franke, B. Ondruschka, Effect of ultrasound amplitude and reaction time on the anaerobic fermentation of chicken manure for biogas production, Biomassa and Bioenergy, 63 (2014), pp. 109-113.

S. T. L. Harrison, Bacterial cell disruption: a key unit operation in the recovery of intracellular products, Biotech. Adv., 9 (1991), pp. 217-240.

K. Nickel, Ultrasonic disintegration of biosolids – benefits, consequences and new strategies, TU Hamburg-Harburg Reports on Sanitary Engineering, 35 (2002), pp. 189-199.

M. Dular, T. Griessler-Bulc, I. Gutierrez-Aguirre, E. Heath, T. Kosjek, A. K. Klemenčič, M. Oder, M. Petkovšek, N. Rački, M. Ravnikar, A. Šarc, B. Širok, M. Zupanc, M. Zitnik, B. Kompare, Use of hydrodynamic cavitation in (waste)water treatment, Ultrasonics Sonochemistry, 29 (2016), pp. 577–588.

M. N. H. Jusoh, A. Aris, J. Talib: Hydrodynamic cavitation using double orifice- plates for the generation of hydroxyl radicals, Jurnal Teknologi, 78 (11) (2016), pp. 41-47.

A. Simpson, V. V. Ranade, Modeling Hydrodynamic Cavitation in Venturi: Influence of Venturi Configuration on Inception and Extent of Cavitation, AIChE Journal, 65 (1) (2019), pp. 421-433.

M. Li, A. Bussonnière, M. Bronson, Z. Xu, Q. Liu, Study of Venturi tube geometry on the hydrodynamic cavitation for the generation of microbubbles, Minerals Engineering, 132 (2019), pp. 268–274

A. M. Abdulaziz, Performance and image analysis of a cavitating process in a small type venturi, Experimental Thermal and Fluid Science, 53 (2014), pp. 40-48.

S. Brinkhorst, E. von Lavante, G. Wendt, Numerical investigation of cavitating Herschel Venturi-Tubes applied to liquid flow metering, Flow Measurement and Instrumentation, 43 (2015), pp. 23–33.

D. Bertoldi, C.C.S. Dallalba, J. R. Barbosa Jr., Experimental investigation of two-phase flashing flows of a binary mixture of infinite relative volatility in a Venturi tube, Experimental Thermal and Fluid Science, 64 (2015), pp. 152–163.

G. G. Dastane, H. Thakkar, R. Shah, S. Perala, J. Raut, A.B. Pandit, Single and multiphase CFD simulations for designing cavitating venturi, Chemical Engineering Research and Design, 149 (2019), pp. 1–12.

J. Wang, L. Wang, S. Xu, B. Ji, X. Long, Experimental investigation on the cavitation performance in a venturi reactor with special emphasis on the choking flow, Experimental Thermal and Fluid Science, 106 (2019), pp. 215–225.