Brief Report
Oct 1977
Phosphate Removal Using Waste Calcium Sulfate
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VIEW THE REPLYAuthors: Thomas L. Theis and Gail A. FrommAuthor Affiliations
Publication: Journal of the Environmental Engineering Division
Volume 103, Issue 5
Abstract
Calcium sulfate (gypsum) is a common and inexpensive mineral which is among the cheapest sources of soluble calcium ion available. Relatively pure calcium sulfate is produced as a byproduct in several industries including chemical pharmaceutical (2) and, in the near future, it will also be produced by high sulfur coal-fired utilities which must remove stack gas S02. Thus, on a local basis it may be obtained at a markedly reduced cost, transportation being a major cost factor. This study was undertaken to explore the possibility of employing gypsum as a supplemental chemical for the removal of phosphate from wastewaters, and to determine under what conditions it can be utilized in this manner.
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Published In
Journal of the Environmental Engineering Division
Volume 103 • Issue 5 • October 1977
Pages: 951 - 955
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Oct 1977
Published online: Feb 11, 2021
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Authors
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Thomas L. Theis
Asst. Prof., Dept. of Civ. Engrg., Univ. of Notre Dame, Notre Dame, Ind.
Gail A. Fromm
Environmental Engr., Commonwealth Edison Co., Chicago, Ill., formerly, Grad. Student, Dept. of Civ. Engrg., Univ. of Notre Dame, Notre Dame, Ind.
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