Reducing Sediment Deposition on Deflector in Vortex Settling Basins
Publication: Journal of Irrigation and Drainage Engineering
Volume 146, Issue 10
Abstract
This paper presents a retrofit for vortex settling basins (VSBs) by perforating the deflector to reduce sediment deposition and thereby lowering VSB failure risks. Experiments were conducted for two retrofitted VSBs with the deflector perforated on the outside overflow area only and the other entirely perforated. The sediment deposition, sediment trapping efficiency, and water abstraction ratio of the retrofitted VSBs were measured and compared with an original VSB with an unperforated deflector. The VSB with a partially perforated deflector exhibited a similar sediment trapping efficiency and water abstraction ratio to the original VSB, with an average reduction over 40% in sediment deposition on the deflector. The VSB with an entirely perforated deflector had a lower sediment trapping efficiency and greater sediment deposition on the deflector.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request (experimental measurements).
Acknowledgments
The writers gratefully acknowledge financial support from the Chinese Water Pollution Control Program (Project No. 2017ZX07206-001-02-001), the University Research Project of Xinjiang Uygur Autonomous Region (Grant No. XJEDU2018I010), and Tianshan Youth Project (2018Q017).
References
Athar, M., U. C. Kothyari, and R. J. Garde. 2002. “Sediment removal efficiency of vortex chamber type sediment extractor.” J. Hydraul. Eng. 128 (12): 1051–1059. https://doi.org/10.1061/(ASCE)0733-9429(2002)128:12(1051).
Chapokpour, J., J. Farhoudi, and E. A. Tokaldani. 2011. “Turbulent flow measurement in vortex settling basin.” Iranica J. Energy Environ. 2 (4): 382–389.
Chapokpour, J., J. Farhoudi, E. A. Tokaldany, and M. Majedi-Asl. 2012a. “Flow visualization in vortex chamber.” J. Civ. Eng. Urbanism 2 (1): 26–34.
Chapokpour, J., F. Ghasemzadeh, and J. Farhoudi. 2012b. “The numerical investigation on vortex flow behavior using FLOW-3D.” Iranica J. Energy Environ. 3 (1): 88–96. https://doi.org/10.5829/idosi.ijee.2012.03.01.3096.
Deng, H. 2015. “Measurement and analysis for suspended-load sediment inside the vortex settling basin in Kashgar, China.” [In Chinese.] Sichuan Hydraul. Eng. 4: 51–54.
Garcia, M. 2008. Sedimentation engineering: Processes, measurements, modeling, and practice. Reston, VA: ASCE.
Howard, A., O. Mohseni, J. S. Gulliver, and H. G. Stefan. 2012. “Use of standard sumps for suspended sediment removal from stormwater.” J. Hydraul. Eng. 138 (6): 491–502. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000544.
Howard, A. K., O. Mohseni, J. S. Gulliver, and H. G. Stefan. 2011. “Hydraulic analysis of suspended sediment removal from storm water in a standard sump.” J. Hydraul. Eng. 138 (6): 491–502. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000544.
Huang, T. H., C. D. Jan, and Y. C. Hsu. 2017. “Numerical simulations of water surface profiles and vortex structure in a vortex settling basin by using flow-3D.” J. Mar. Sci. Technol. 25 (5): 531–542. https://doi.org/10.6119/JMST-017-0509-1.
Keshavarzi, A. R., and A. R. Gheisi. 2006. “Trap efficiency of vortex settling chamber for exclusion of fine suspended sediment particles in irrigation canals.” Irrig. Drain. 55 (4): 419–434. https://doi.org/10.1002/ird.263.
Kiringu, K., and G. Basson. 2019. “Removal of fine non-cohesive sediment by swirl/vortex settling basin at small river abstraction works.” In Proc., 19th Int. Conf. on Transport and Sedimentation of Solid Particles. Wrocław, Poland: Wydawnictwo Uniwersytetu Przyrodniczego we Wrocławiu.
Nguyen, Q. T., and C. D. Jan. 2010. “Sediment removal efficiency of a deep vortex chamber sediment extractor.” In Proc., 6th Int. Symp. on Environmental Hydraulics, 1065–1070. Boca Raton, FL: CRC Press.
Paul, T. C., S. K. Sayal, V. S. Sakhanja, and G. S. Dhillon. 1991. “Vortex settling chamber design considerations.” J. Hydraul. Eng. 117 (2): 172–189. https://doi.org/10.1061/(ASCE)0733-9429(1991)117:2(172).
Wilson, M. A., O. M. Mohseni, J. Gulliver, R. M. Hozalski, and H. G. Stefan. 2009. “Assessment of hydrodynamic separators for storm-water treatment.” J. Hydraul. Eng. 135 (5): 383–392. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000023.
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© 2020 American Society of Civil Engineers.
History
Received: Dec 9, 2019
Accepted: Jun 18, 2020
Published online: Aug 14, 2020
Published in print: Oct 1, 2020
Discussion open until: Jan 14, 2021
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