Stability of High-Rate Anaerobic Systems. II: Fuzzy Stability Index
Publication: Journal of Environmental Engineering
Volume 126, Issue 8
Abstract
Based on a fuzzy logic method, fuzzy stability index N was proposed to integrate the complex information contained in various system variables and explicitly indicate the departure of a system from normal state. The instability of a system subjected to a shock could be explicitly revealed by its variance of N. Based on the examination of variance of N, the stability of three high-rate anaerobic reactors in the presence of various shocks was quantitatively compared. The comparison results based on N coincided in general with the conclusions obtained from a direct examination of the reactors' performance, but the N comparison method was proven to be much more convenient and explicit as compared with the method of direct examination of the reactors' performance.
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References
1.
Dubois, D., and Prade, H. (1985). “A review of fuzzy set aggregation connectives.” Information Sci., 36, 85–121.
2.
Hedrick, D. B., Richards, B., Jewell, W., Guckert, J. B., and White, D. C. (1991). “Disturbance, starvation, and overfeeding stresses detected by microbial lipid biomarkers in high-solids high-yield methanogenic reactors.” J. Industrial Microbiology, 8(2), 91–98.
3.
Jang, J.-S. R., and Gulley, N. (1995). Fuzzy Logic Toolbox user's guide, The Mathworks, Inc., Natick, Mass.
4.
Klir, G. J., and Folger, T. A. (1988). Fuzzy sets, uncertainty, and information, Prentice-Hall, Englewood Cliffs, N.J.
5.
Lin, C. T., and Lee, C. S. G. (1996). Neural fuzzy systems, Prentice-Hall, Englewood Cliffs, N.J.
6.
Marsili-Libeli, S., and Muller, A. (1996). “Adaptive fuzzy pattern recognition in the anaerobic digestion process.” Pattern Recognition Letters, 17, 651–659.
7.
Yang, G., and Anderson, G. K. (1993). “Effects of wastewater composition on stability of UASB.”J. Envir. Engrg., ASCE, 119, 958–977.
8.
Zadeh, L. A. (1965). “Fuzzy sets.” Information and Control, 8, 338–353.
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Published online: Aug 1, 2000
Published in print: Aug 2000
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