Research Article
Apr 1977
Leaching Characteristics of Polluted Dredgings
Publication: Journal of the Environmental Engineering Division
Volume 103, Issue 2
Abstract
This study is directed toward evaluating the pollution potential of leachates from seven different dredged materials and the effect of various additives on improving leachate quality, as well as sedimentation characteristics and shear strength. Based on the results of sequential series of sedimentation tests and sedimentation-leaching tests with and without additives, no significant changes in leachate quality were observed; increases in the specific ion concentrations and increases in the dissolved solids of the leachates were directly attributable to the additives used. In most cases there were increases in the solids due to flocculation, and lime was found to be effective in stabilizing the soil structure, increasing the permeability of the sediment and hastening the rate of leachate production. In an effort to assess the long-term pollution potential of such leachates with and without addition of lime, a series of repeated leaching tests were performed. The leachates from the dredged materials tested do not appear to cause any serious pollution problem.
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Information
Published In
Journal of the Environmental Engineering Division
Volume 103 • Issue 2 • April 1977
Pages: 197 - 215
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Apr 1977
Published online: Feb 11, 2021
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Authors
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Jau S. Jin
Civ. Engr.; Hayward Baker Co., Odenton, Md.
Gilbert L. Roderick, M.ASCE
Assoc. Prof. of Civ. Engrg.; Univ. of Wisconsin, Milwaukee, Wisc.
Raymond J. Krizek, M.ASCE
Prof. of Civ. Engrg.; The Technological Inst., Northwestern Univ., Evanston, Ill.
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