Numerical Approach to Clarifier Operation According to Flux Theory
Publication: Journal of Environmental Engineering
Volume 120, Issue 3
Abstract
Limiting flux theory has become accepted in the design of secondary clarifiers, and has proven useful in the operation of existing activated sludge facilities. In this paper, the governing equations used to find the recycle and waste flow rates which correspond to limiting flux operation for a given plant condition are reviewed. A numerical technique is derived and applied in order to obtain an approximation to this equation set using a specific example. This approach is useful for incorporating limiting flux theory directly into design optimization models.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Baskin, D. E., and Suidan, M. T. (1985). “Unified analysis of thickening.” J. Envir. Engrg., 111(1), 10–26.
2.
Berthouex, P. M., and Polkowski, L. B. (1970). “Optimum waste treatment plant design under uncertainty.” J. Water Pollution Control Federation, 42(9), 1589.
3.
Craig, E. W., Meredith, D. D., and Middleton, A. C. (1978). “Algorithm for optimal activated sludge design.” J. Envir. Engrg. Div., ASCE, 104(6), 1101.
4.
Daigger, G. T., and Roper, R. E. (1985). “The relationship between SVI and activated sludge settling characteristics.” J. Water Pollution Control Federation, 57(8), 859.
5.
Dick, R. I. (1980). “Analysis of the performance of final settling tanks.” Trib. Cebedeau, 33, 359.
6.
Hughey, P. W., Meredith, D. D., and Middleton, A. C. (1982). “Algorithm for optimal activated sludge operation.” J. Environ. Engrg., ASCE, 108(2), 349.
7.
Keinath, T. M., Ryckman, M. D., Dana, C. H., and Hofer, D. A. (1977). “Activated sludge‐unified system design and operation.” J. Envir. Engrg. Div., ASCE, 103(5), 829.
8.
Keinath, T. M. (1985). “Operational dynamics and control of secondary clarifiers.” J. Water Pollution Control Federation, 57(7), 770.
9.
Keinath, T. M. (1990). “Diagram for designing and operating secondary clarifiers according to the thickening criterion.” Res. J. Water Pollution Control Federation, 62(3), 254.
10.
McHarg, W. H. (1973). “Designing the optimum system for biological waste treatment.” Chemical Engrg., 80(12), 46.
11.
Pincince, A. P. (1991). “Discussion of ‘Diagram for designing and operating secndary clarifiers,’” by Keinath, T. M., Res. J. Water Pollution Control Federation, 63(2), 187.
12.
Riddell, M. D. R., Lee, J. S., and Wilson, T. E. (1983). “Method for estimating the capacity of an activated sludge plant.” J. Water Pollution Control Federation, 55(4), 360.
13.
Tang, C., Brill, E. D., and Pfeffer, J. T. (1987). “Comprehensive model of activated sludge wastewater treatment system.” J. Envir. Engrg., 113(5), 952–969.
14.
Vesilind, P. A. (1974). “Treatment and disposal of wastewater sludges.” Ann Arbor Science Publishers, Inc., Ann Arbor, Mich.
15.
Wahlberg, E. J., and Keinath, T. M. (1988). “Development of settling flux curves using SVI.” J. Water Pollution Control Federation, 60(12), 2095.
Information & Authors
Information
Published In
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Dec 11, 1992
Published online: May 1, 1994
Published in print: May 1994
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.