Parameters Affecting Hydraulic Behavior of Aerated Lagoons
Publication: Journal of Environmental Engineering
Volume 131, Issue 10
Abstract
Tracer studies were performed at the full-scale St-Hermas aerated lagoon, Quebec, Canada, and a dynamically similar laboratory model to determine the effects of the water flow rate and aeration rate on hydraulic mixing. The tracer study E-curves were extrapolated to ensure conservation of the tracer mass within the system and in turn were analyzed using a two-celled compartmental model. The results of the compartmental model analysis demonstrate that the water flow and aeration rates both influence the percentage of dead zones and bypassing within the system, with the water flow rate being the dominant parameter. This study therefore concludes that hydraulic mixing of aerated lagoons is significantly affected by the water flow and aeration rates. The ability to demonstrate that these hydraulic parameters affect the mixing of aerated lagoons is attributed to the E-curve development and the compartmental model analysis used in this study.
Get full access to this article
View all available purchase options and get full access to this article.
References
Arceivala, S. J. (1983). “Hydraulic modeling for waste stabilization ponds.” J. Environ. Eng., 109(1), 265–268.
Benefield, L. D., and Randall, C. W. (1980). Biological process design for wastewater treatment, Prentice-Hall, Englewood Cliffs, N.J.
Danckwerts, P. V. (1953). “Continuous flow systems: Distribution of residence times.” Chemical Engineering Science (Genie Chimique), 2(1), 1–13.
Delatolla, R. (2003). “Characterization of hydraulic parameters affecting the performance of aerated lagoons.” Masters thesis, McGill Univ., Montreal.
Dorego, N. C., and Leduc, R. (1996). “Characterization of hydraulic flow patterns in facultative aerated lagoons.” Water Sci. Technol., 34(11), 99–106.
Horvath, I. (1984). Modeling in the technology of wastewater treatment, Pergamon, Willowdale, Ontario, Canada.
Levenspiel, O. (1962). Chemical reaction engineering: An introduction to the design of chemical reactors, Wiley, New York.
Levenspiel, O. (1999). Chemical reaction engineering, 3rd Ed., Wiley, New York.
Middlebrooks, E. J., Middlebrooks, C. H., Reynolds, J. H., Watters, G. Z., Reed, S. C., and George, D. B. (1982). Wastewater stabilization lagoon design, performance and upgrading, Macmillan, New York.
Moreno, M. D. (1990). “A tracer study of the hydraulics of facultative stabilization ponds.” Water Res., 24(8), 1025–1030.
Murphy, K. L., and Wilson, A. W. (1974). “Characterization of mixing in aerated lagoons.” J. Environ. Eng. Div. (Am. Soc. Civ. Eng.), 100(5), 1105–1117.
Nameche, T., and Vasel, J. L. (1998). “Hydrodynamic studies and modelization for aerated lagoons and waste stabilization ponds.” Water Res., 32(10), 3039–3045.
Polprasert, C., and Bhattarai, K. K. (1985). “Dispersion model for waste stabilization ponds.” J. Environ. Eng., 111(1), 45–59.
Spalding, D. B. (1958). “A note on mean residence-times in steady flows of arbitrary complexity.” Chem. Eng. Sci., 9(1) 74–77.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 131 • Issue 10 • October 2005
Pages: 1404 - 1413
Copyright
© 2005 ASCE.
History
Received: Mar 17, 2003
Accepted: Jan 24, 2005
Published online: Oct 1, 2005
Published in print: Oct 2005
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.