Analytical Approach for Evaluation of Settling Column Data
Publication: Journal of Environmental Engineering
Volume 115, Issue 2
Abstract
In this study an equation of iso-percentage curves as a function of settling time and depth is developed which is applicable both to discrete and flocculent suspensions. Using this model, an expression for the solids removal ratio of quiescent settling suspensions is obtained. Results of the proposed expression are found to be in good agreement for most cases when predicted and reported solids removal ratios are compared. Observed differences are interpreted as results of manual interpolation of iso-percentage curves and as assumptions made in graphical evaluations of solids removal efficiencies in the literature. It is concluded that the presented expression can be used as a numerical approach in the evaluation of ideal settling column test results of suspensions.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Eckenfelder, W. W., Jr. (1966). Industrial water pollution control. McGraw‐Hill Book Co., New York, N.Y.
2.
O'Connor, D. J., and Eckenfelder, W. W., Jr. (1961). Biological waste treatment. Pergamon Press, New York, N.Y.
3.
Reynolds, D. T. (1982). Unit operations and processes in environmental engineering. Brooks/Cole Engineering Division, Monterey, Calif.
4.
Camp, T. R. (1946). “Sedimentation and design of settling tanks.” Transactions, ASCE, 111, 895–958.
5.
Zanoni, A. E., and Blomquist, M. W. (1975). “Column settling tests for flocculent suspensions.” J. Envir. Engrg. Div., ASCE, 101(3), 309–318.
6.
Huisman, L. (1972). Sedimentation and flotation mechanical filtration. Delft University of Technology, The Netherlands.
7.
Berthouex, P. M., and Stevens, D. K. (1982). “Computer analysis of settling data.” J. Envir. Engrg. Div., ASCE, 108(5).
8.
Rich, L. G. (1961). Unit operation of sanitary engineering. John Wiley and Sons, Inc., New York, N.Y.
9.
Metcalf, L., and Eddy, P. H. (1979). Waste water engineering, treatment, disposal, reuse. McGraw‐Hill Book Co., New York, N.Y.
10.
San, H. A. (1980). “Yumaklasan danelerin cokelmesi ile ilgili numerik bir model‐A numerical model on settling of flocculent suspension,” thesis presented to the Technical University of Istanbul, at Istanbul, Turkey, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 115 • Issue 2 • April 1989
Pages: 455 - 461
Copyright
Copyright © 1989 ASCE.
History
Published online: Apr 1, 1989
Published in print: Apr 1989
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.