Comprehensive Fate Model for Metals in Municipal Wastewater Treatment
Publication: Journal of Environmental Engineering
Volume 120, Issue 5
Abstract
A model was developed for predicting the fate of metals in municipal wastewater treatment. The model, which incorporates metal solubility and sorption onto solids, was calibrated with experimental data obtained by a titration technique. The calibrated model was evaluated using dynamic data collected in a separate study from three Ontario wastewater‐treatment plants (WWTPs). A goodness‐of‐fit test was employed to determine if the model predictions were statistically different from the observed effluent concentrations. Predictions of copper and zinc effluent concentrations at two WWTPs were found to lie within the confidence limits defined by the variability of field replicates. Lack of fit of some model predictions was attributed to biasing of the data at low concentrations and lack of model calibration. The configuration of the model was concluded to be correct since the behavior of metals with significantly different physical properties were well predicted. It is concluded that the most accurate model predictions can be made if the model is calibrated at the specific WWTP.
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References
1.
“Fate of priority toxic pollutants in publicly owned treatment works.” (1982). EPA 440/1‐82/303 Rep., U.S. Environmental Protection Agency, Washington, D.C.
2.
Fluctuations of trace contaminants in municipal sewage treatment plants: phase II field studies. (1991). Ontario Ministry of the Environment, Toronto, Ontario.
3.
Imai, A., and Gloyna, E. F. (1990). “Effects of pH and oxidation state of chromium in the activated sludge process.” Water Res., 24(9), 1143–1150.
4.
Monteith, H. (1987). “Fluctuations of trace contaminants in sewage treatment plants.” Monograph No. 1, Canadian Association on Water Pollution Research and Control, Burlington, Ontario.
5.
Monteith, H. D., Bell, J. P., Thompson, D. J., Kemp, J., Yendt, C. M., and Melcer, H. (1993). “Modelling the fate of metals in municipal water pollution control plants.” Water Envir. Res., 65(2), 129–137.
6.
Nelson, P. O., Chung, A. K., and Hudson, M. C. (1981). “Factors affecting the fate of metals in the activated sludge process.” J. WPCF, 53(8), 1323–1333.
7.
Nielson, J. S., Hrudey, S. E., and Cantwell, F. F. (1984). “Role of the free metal ion in soluble nickel removal by activated sludge.” Envir. Sci. Technol., 18(11),883–886.
8.
Sterrit, R. M., and Lester, J. N. (1981). “The influence of sludge age on heavy metal removal in the activated sludge process.” Water Res., Vol. 15, 59–65.
9.
Stoveland, S., and Lester, J. N. (1980). “A study of the factors which influence metal removals in the activated sludge process.” Sci. Total Envir., Vol. 16, 37–54.
10.
Thirty‐seven municipal water pollution control plants pilot monitoring study. (1989). Ontario Ministry of the Environment, Toronto, Ontario.
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Copyright © 1994 American Society of Civil Engineers.
History
Received: Mar 29, 1993
Published online: Sep 1, 1994
Published in print: Sep 1994
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