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Containment Aspects, Scrubber Sludge Disposal System

by Larry W. Lobdell, (A.M.ASCE), Project Director; Dravo Corp., Pittsburgh, Pa.,


Serial Information: Civil Engineering—ASCE, 1977, Vol. 47, Issue 4, Pg. 71-74


Document Type: Feature article

Abstract:

Containment of flue gas desulfurization sludge from a coal-fired power plant was accomplished by Dravo Corporation in an environmentally acceptable manner through the construction of an earth and rockfill embankment sealing the open end of a valley in the vicinity of the power plant. The embankment allows the sludge, which is treated with a special chemical additive developed by Dravo, called Calcilox, to be impounded in the valley where it will harden into stable landfill material. The reservoir area has a maximum width of approximately 8,200 ft and a maximum length of about 11,000 ft. In designing the embankment, consideration was given to storm water handling, seepage control and a spillway and discharge system. An impervious core was needed to assure containment of water used in the waste disposal system, plus a bedrock foundation to withstand the full hydrostatic pressure of the unstabilized sludge.

Subject Headings: Sludge | Power plants | Spillways | Water discharge | Stormwater management | Chemical treatment | Chemical additives

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