Wastewater Effect on the Deposition of Cohesive Sediment
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Volume 144, Issue 1
Abstract
In this study, the characteristics of sediment deposition with three levels of wastewater, different shear stress, and initial sediment concentration were investigated in an annular flume. Sediment used for experiments was taken from the Pirbalut small dam reservoir, located in southwest Iran. The velocity and the shear stress profiles were measured, using an acoustic Doppler velocimeter (ADV). The results showed that the concentration of cohesive sediment decreased with time, and finally it reached an equilibrium concentration of sediment. The ratio of equilibrium concentration to initial concentration () with a constant shear stress, for different initial sediment concentrations and different levels of wastewater were almost the same. The equilibrium concentration depends on the initial concentration sediment. Adding wastewater to the mixture caused the increasing of threshold and full deposition shear stress. The critical shear stresses for full deposition for three wastewater levels of 0, 30, and 60% are obtained as 0.050, 0.081, and , respectively.
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References
ASTM. (1972). “Standard test method of test for liquid limit of soils.” ASTM D423, West Conshohocken, PA.
ASTM. (1997). “Standard test methods for determining sediment concentration in water samples.” ASTM D3977, West Conshohocken, PA.
Delo, E. A. (1988). “The behavior of Estuarine muds during tidal cycles.”, Hydraulic Research Station, Wallingford, U.K.
Fukuda, M. K., and Lick, W. (1980). “The entrainment of cohesive sediments in fresh water.” J. Geophys. Res., 85(C5), 2813–2824.
Ha, H. K., and Maa, J. P. Y. (2009). “Evaluation of two conflicting paradigms for cohesive sediment deposition.” Mar. Geol., 265(3–4), 120–129.
Haralampides, K., McCorquodale, A., and Krishnappan, B. G. (2003). “Deposition properties of fine sediment.” J. Hydraul. Eng., 230–234.
Huang, J., Hilldate, R. C., and Greiman, B. P. (2006). Erosion and sedimentation manual, U.S. Bureau of Reclamation, Washington, DC.
Krishnappan, B. G., and Engel, P. (2004). “Distribution of bed shear stress in rotating circular flume.” J. Hydraul. Eng., 324–331.
Krishnappan, B. G., and Stephens, R. (1996). Critical shear stresses for erosion and deposition of fine suspended sediment from the Athabasca River, Northern River Basins Study, Edmonton, AB, Canada.
Krone, R. B. (1962). “Flume studies of the transport of sediment in estuarial shoaling processes.”, Univ. of California, Berkeley, CA.
Lau, Y. L., and Krishnappan, B. G. (1994). “Does reentrainment occur during cohesive sediment settling?” J. Hydraul. Eng., 236–244.
Maa, J. P.-Y., Kwon, J.-I., Hwang, K.-N., and Ha, H.-K. (2008). “Critical bed shear stress for cohesive sediment deposition under steady flows.” J. Hydraul. Eng., 1767–1771.
Mehta, A. J., and Partheniades, E. (1973). “Depositional behaviour of cohesive sediments.”, Coastal and Oceanographic Engineering Laboratory, Univ. of Florida, Gainesville, FL.
Milburn, D., and Krishnappan, B. G. (2003). “Modelling erosion and deposition of cohesive sediments from Hay River, Northwest Territories, Canada.” Nordic Hydrol., 34(1–2), 125–138.
Partheniades, E. (2009). Cohesive sediments in open channels, 1st Ed., Elsevier, Burlington, VT.
Partheniades, E., and Kennedy, J. G. (1966). “Deposition behavior of fine sediment in a turbulent fluid motion.” Proc., 10th Int. Conf. on Coastal Engineering, Tokyo, 707–724.
Samadi-Boroujeni, H. (2004). “Modeling of deposition and self-weight consolidation of cohesive sediments.” Ph.D. dissertation, Shahid Chamran Univ. of Ahwaz, Ahvaz, Iran.
Sheng, Y. P. (1988). “Consideration of flow in rotating annuli for sediment erosion and deposition studies.” J. Coastal Res., SI5, 207–216.
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Published In
Journal of Environmental Engineering
Volume 144 • Issue 1 • January 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Apr 9, 2016
Accepted: Apr 24, 2017
Published online: Oct 26, 2017
Published in print: Jan 1, 2018
Discussion open until: Mar 26, 2018
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