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Denver's Dual Utilization Sludge Management Plan

by Richard D. Kuchenritcher, Black & Veatch, Engineers-Architects, Aurora, CO, USA,
William J. Martin, Black & Veatch, Engineers-Architects, Aurora, CO, USA,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract:

The Metropolitan Denver Sewage Disposal District No. 1 (District) has adopted a Dual Utilization approach to sludge management. This technique uses composting during periods of inclement weather and the application of liquid sludge to cropland when weather conditions allow. The cost-effective implementation of these two methods was made possible by the development of the Denver Method of Windrow Composting. In this composting method, the composting and curing processes are effectively combined. This made the cost of composting less than the cost of winter season storage and subsequent application of liquid sludge. This paper presents the costs, design, and operational details for both 100 dry ton per day composting and land application operations that comprise dual utilization. (Author abstract. )

Subject Headings: Composting | Sludge | Soil treatment | Benefit cost ratios | Sewage | Management methods | Land use | Denver | Colorado | United States

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