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Evaluation of Leachate Generation at the Montour, Pennsylvania, Fly Ash Test Cell

Published online by Cambridge University Press:  21 February 2011

J. F. Villaume ,
J. W. Bell  and
L. L. Labuz
J. F. Villaume
Affiliation:
Solid Waste and Toxics Control Group, Environmental Management Division, Pennsylvania Power & Light Company, Two North Ninth Street, Allentown, PA 18101
J. W. Bell
Affiliation:
Solid Waste and Toxics Control Group, Environmental Management Division, Pennsylvania Power & Light Company, Two North Ninth Street, Allentown, PA 18101
L. L. Labuz
Affiliation:
Solid Waste and Toxics Control Group, Environmental Management Division, Pennsylvania Power & Light Company, Two North Ninth Street, Allentown, PA 18101
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Abstract

The Pennsylvania Power & Light Company, in cooperation with the Electric Power Research Institute, is studying leachate generation at a large outdoor test cell of compacted coal combustion fly ash constructed at the Montour Steam Electric Station in north-central Pennsylvania. The test cell design is identical to that of the plant's active dry fly ash disposal facility. Leachate initially generated at the test cell contained concentrations of chromium and selenium approximately ten times above EPA's assigned Maximum Contaminant Levels (MCL's) for drinking water. Concentrations of these two parameters have since decreased approximately five-fold. Similar reductions have occurred in the concentrations of several of the other trace metals measured in the leachate. The dominant reaction mechanisms controlling leachate composition were examined in an attempt to explain these and other observations. Deterministic chemical modeling was performed to aid in the interpretation of the data. The dynamics of leachate generation were also examined through an evaluation of the infiltration and redistribution of moisture.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 113: Symposium Q – Fly Ash and Coal Conversion By-Products IV , 1987 , 325
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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