Closure to “Conventional and AWT Mixed-Liquor Settling Characteristics” by Richard O. Mines Jr., Jeffrey L. Vilagos, Wayne F. Echelberger Jr., and R. Jerry Murphy
This article is a reply.
VIEW THE ORIGINAL ARTICLEPublication: Journal of Environmental Engineering
Volume 128, Issue 10
Abstract
We appreciate the comments of Wahlberg et al. on the discussion of our manuscript and regret there were some errors and omissions in the final manuscript that was published. Yet, we firmly stand by Eq. (7), which was developed during our study and which corroborates Eq. (3) proposed by Daigger (1995). We strongly disagree with some of the interpretations and conclusions that were advocated in their discussion and therefore, we will address each of the seven issues individually.
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References
Bye, C. M., and Dold, P. L.(1998). “Sludge volume index settleability measures: Effects of solids characteristics and test parameters.” Water Environ. Res., 70, 87.
Daigger, G. T.(1995). “Development of refined clarifier operating diagrams using an updated settling characteristics database.” Water Environ. Res., 67, 95.
Daigger, G. T., and Roper, R. E.(1985). “The relationship between SVI and activated sludge settling characteristics.” J. Water Pollut. Control Fed., 57, 859.
Keinath, T. M.(1990). “Diagram for designing and operating secondary clarifiers according to the thickening criterion.” Res. J. Water Pollut. Control Fed., 62, 254.
Vilagos, J. L. (1997). “Mixed-liquor settling characteristics in single and separate sludge activated sludge systems.” Master’s project, Univ. of South Florida, Tampa, Fla.
Wahlberg, E. J., and Keinath, T. M.(1988). “Development of settling flux curves using SVI.” J. Water Pollut. Control Fed., 60, 2095.
Wahlberg, E. J. (1987). “Development of settling flux curves using SVI.” Master’s thesis, Clemson Univ., Clemson, S.C.
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Published In
Journal of Environmental Engineering
Volume 128 • Issue 10 • October 2002
Pages: 1009 - 1011
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Published online: Sep 13, 2002
Published in print: Oct 2002
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