Experimental Study of Windrow Composting of Sludge

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by Richard C. Carmichael, Woodward-Clyde Consultant, United States,
Michael A. Collins, Woodward-Clyde Consultant, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract: An experimental field study of the windrow composition of sludge at the City of Dallas, Texas, Southside Waste Water Treatment Plant was conducted to provide data for possible design of a demonstration scale compositing project. A series of full sized conical windrow piles were constructed and monitored to examine the effects of design parameters and environmental conditions. Bulking agent type and ratios, moisture contents, free air space, volatile solids reduction, and pile temperature were studied. Free air space was found to be a key parameter in effective pile operation.

Subject Headings: Sludge | Composting | Wastewater treatment plants | Parameters (statistics) | Piles | Waste treatment plants | Space exploration | Field tests | Water treatment plants | Solid mechanics | North America | Texas | United States

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