Role of Suspension Polydispersivity in Granular Media Filtration
Publication: Journal of Environmental Engineering
Volume 119, Issue 1
Abstract
Experimental work on the role of feed suspension polydispersivity on the performance of granular media filters is presented. Suspensions of latex particles of sizes 0.09 μm, 0.944 μm, 7.04 μm, and 7.6 μm, and their paired combinations were filtered through a porous bed of glass spheres. During the ripening stage of the filtration, the presence of small particles was observed to improve the removal of large particles, while the removal of small particles themselves was not significantly affected by the presence of larger particles. These results are explained by the relative contributions of particles deposited in the filter bed to the total available surface area for subsequent particle deposition. Filter ripening evolves faster when particles in the filter influent have a smaller mass‐averaged diameter. Deposit morphology and relative distribution of the mass in the bed appear to depend on suspension polydispersivity and play an important role in head‐loss development. When particles smaller than 1 μm are present in the feed suspension, relatively short periods of filtering to waste should improve the removal of the bacteria‐sized particles that may be poorly removed by clean filter beds.
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References
1.
Darby, J. L., and Lawler, D. F. (1990). “Ripening in depth filtration: Effect of particle size distribution on removal and head loss.” Envir. Sci. and Tech., 24(7), 1069–1079.
2.
Elimelech, M., and O'Melia, C. R. (1990). “Effect of particle size on collision efficiency in the deposition of Brownian particles with electrostatic energy barriers.” Langmuir, 6, 1153–1163.
3.
Ghosh, M. M., Jordan, T. A., and Porter, R. L. (1975). “Physicochemical approach to water and wastewater filtration.” J. Envir. Engrg. Div., ASCE, 101(1), 71–86.
4.
Happel, J. (1958). “Viscous flow in multiparticle systems: Slow motion of fluids relative to beds of spherical particles.” J. Am. Inst. Chem. Engrs., 4(2), 197–201.
5.
Ives, K. J. (1975). “Mathematical models of deep bed filtration.” The scientific basis of filtration. Noordhoff International Publishing/A. W. Sijthoff International Publishing Co., Noordhoff, The Netherlands, 203–224.
6.
Mints, D. M. (1951). “Kinetics of the filtration of low concentration suspensions through water filters.” Doklady Chemical Technology, Moscow, USSR, 78, 315.
7.
Morel, F. M. M. (1983). Principles of aquatic chemistry, John Wiley & Sons, New York, N.Y.
8.
O'Melia, C. R., and Stumm, W. (1967). “Theory of water filtration.” J. Am. Water Works Assoc., 59, 1393–1412.
9.
O'Melia, C. R., and Ali, W. (1978). “The role of retained particles in deep bed filtration.” Prog. in Water Tech., 10(5/6), 167–182.
10.
Rajagopalan, R., and Tien, C. (1976). “Trajectory analysis of deep‐bed filtration with the sphere‐in‐cell porous media model.” J. Am. Inst. Chem. Engrs., 22(3), 523–533.
11.
Rajagopalan, R., and Tien, C. (1979). “The theory of deep bed filtration.” Prog. Filtr. Sep., Elsevier, New York, N.Y., 179–269.
12.
Tare, V. (1986). “Modelling and simulation of granular filters: I. model development, calibration and verification.” Proc. 4th World Filtr. Cong., (Apr.), Royal Flemish Society of Engineers, Ostend, Belgium.
13.
Tare, V., and Venkobachar, C. (1985). “New conceptual formulation for predicting filter performance.” Envir. Sci. and Tech., 19(6), 497–499.
14.
Tien, C. (1989). Granular filtration of aerosols and hydrosols, Butterworth Publishers, Stoneham, Mass.
15.
Tien, C., and Alkiviades, P. C. (1979). “Advances in deep bed filtration.” J. Am. Inst. Chem. Engrs., 25(5), 737–759.
16.
Tobiason, J. E. (1987). “Physicochemical aspects of particle deposition in porous media.” PhD disertation, Johns Hopkins University, Baltimore, Md.
17.
Tobiason, J. E., and O'Melia, C. R. (1988). “Physicochemical aspects of particle removal in depth filtration.” J. Am. Water Works Assoc., 80(12), 4–64.
18.
Vigneswaran, S., and Aim, R. B. (1985). “The influence of suspended particle size distribution in deep‐bed filtration.” J. Am. Inst. Chem. Engrs., 32(2), 321–323.
19.
Vigneswaran, S., Chang, J. S., and Janssens, J. G. (1990). “Technical note: Experimental investigation of size distribution of suspended particles in granular bed filtration.” Water Res., 24(7), 927–930.
20.
Wiesner, M. (1987). “Calibration et validation d'un modele de filtration: Application une etude l'eschelle pilote.” L'Eau, L'Industrie, Les Nuisances, Paris, France, 112, 39–44, (in French).
21.
Yao, K.‐M., Habibian, M. T., and O'Melia, C. R. (1971). “Water and waste water filtration: Concepts and applications.” Envir. Sci. and Tech., 5(1), 1105–1112.
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Copyright © 1993 American Society of Civil Engineers.
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Received: Oct 16, 1991
Published online: Jan 1, 1993
Published in print: Jan 1993
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