Determination of Limit Deposition Velocity and Viscosity in Waste Brines Transported in Pipelines
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 12, Issue 3
Abstract
The wastewater generated in the potash mines of the Bages region in Catalonia (Spain) was experimentally tested at the Paterson & Cooke slurry test facility in Cape Town, South Africa, to determine the flow behavior and limit deposition velocity of various brine and brine-slurry mixtures containing a low solids concentration of fine insoluble particles. The tests measured the limit deposition velocity, viscosity, and flow resistance of a range of brine mixtures at different concentrations of solid particles in suspension, and they are presented and discussed in this paper. Tests were conducted on the slurries using both water tests (WT) and saturated brine tests (BT) as the medium for the solid sediment. In order to replicate the possible situations that could occur during their transport in the pipeline, the mixtures were generated with relatively low sediment concentrations, always less than 5% by volume. The test data showed that the limit deposition velocity at equivalent solid concentrations is higher for the WT mixtures than for the BT mixtures due to the differences in the kinematic viscosity of the medium. Finally, the kinematic viscosity obtained for both WT and BT mixtures trends moderately upward as their volume concentration increases, although the viscosity in BT mixtures presents some particularities that are subsequently described.
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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 authors wish to thank the Agència de Gestió d’Ajuts Universitaris i de Recerca (AGAUR) of the Catalan Government for Grant No. 2014 DI 0070 of the Industrial Doctorate Programme. The authors would also like to thank Aigües de Barcelona for their technical and economic support during the project’s execution. The authors would also like to thank Paterson & Cooke Consulting Engineers, South Africa, for their technical and economic support during the project’s execution.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 12 • Issue 3 • August 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jul 30, 2020
Accepted: Jan 6, 2021
Published online: May 6, 2021
Published in print: Aug 1, 2021
Discussion open until: Oct 6, 2021
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