Effects of Temperature and pH on Residual Aluminum in Alkaline‐Treated Waters
Publication: Journal of Environmental Engineering
Volume 120, Issue 3
Abstract
The effects of temperature and pH on aluminum concentrations in alkaline‐treated waters were examined using laboratory and field data. Residual aluminum concentrations were measured in the effluent from the Van de Water treatment plant, Tonawanda, N.Y., over a one‐year period. Also, data from seven other treatment plants in the United States and Canada were compiled and analyzed. Raw water pH for the plants ranged from 6.7 to 8.4. Results showed that key factors influencing residual aluminum concentrations for the conventional treatment plants were pH and temperature. Trends in dissolved aluminum with temperature measured at the Van de Water plant were described reasonably well based on theoretical inorganic aluminum speciation with fitted values of (infinite dilution) and for . Similar results were observed for three other conventional water treatment plants. Operationally, the effects of pH and temperature on residual aluminum can be described conveniently by pOH, which varies linearly with residual aluminum and is nearly independent of temperature.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 120 • Issue 3 • May 1994
Pages: 543 - 559
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jul 27, 1992
Published online: May 1, 1994
Published in print: May 1994
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