SYMPOSIA PAPER Published: 01 January 1981
STP27644S

Physical and Chemical Behavior and Environmental Acceptability of Stabilized Scrubber Sludge and Fly Ash in Seawater

Source

Flue gas desulfurization sludges and fly ash pose a major disposal problem for coal-burning power plants. Disposal of stabilized, blocklike forms of these wastes in the ocean in the form of a reef is an alternative being studied at the Marine Sciences Research Center, Stony Brook, N.Y.

In laboratory experiments, physical integrity studies and components species leaching rates indicate that, in general, stabilization was found to maintain the strength of the blocks and minimize trace metal leachings in aerobic seawater over prolonged exposure.

In field studies, which are in progress, nine blocks (0.028 m3) of stabilized scrubber sludge and fly ash were placed in approximately 6 m of water in Conscience Bay near Long Island Sound. Within 3 weeks after placement of the coal waste reef and the control structure, a heavy crop of attached plants and animals were observed growing on both reefs. The organisms attached to the coal waste reef showed no elevation in heavy metals in relation to the heavy metal composition of organisms attached to the concrete control.

Author Information

Duedall, IW
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
Roethel, FJ
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
Seligman, JD
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
Oakley, SA
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
Parker, JH
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
O'Connors, HB
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
Woodhead, PMJ
Marine Sciences Research Center, State University of New York, Stony Brook, N.Y.
Roberts, BK
IU Conversion Systems, Inc., Horsham, Pa.
Mullen, H
IU Conversion Systems, Inc., Horsham, Pa.
Chezar, B
Power Authority of the State of New York, New York, N.Y.
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Details
Developed by Committee: D19
Pages: 289–306
DOI: 10.1520/STP27644S
ISBN-EB: 978-0-8031-4798-0
ISBN-13: 978-0-8031-0801-1