Aerated Static Pile Composting of Wastewater Sludge: A Field Study in Longmont, Colorado

by Rita Klees, Univ of Colorado, Boulder, CO, USA,
JoAnn Silverstein, Univ of Colorado, Boulder, CO, USA,

Document Type: Proceeding Paper

Part of: Environmental Engineering


This is a report of experimental work at the Longmont wastewater plant at Colorado, on aerated static pile composting of wastewater sludge. 61% of the sludge mass used in compost piles over the nine month study period has been destroyed by water removal or degradation of volatile solids. It was found that recycled compost produces compost temperatures lower than those found in piles using an external bulking agent; increases sludge detention time; and contributes to increased moisture removal and volatile solids reduction. All the Colorado Department of Health State standards (1985) for sludge stabilization were met in this study.

Subject Headings: Field tests | Sludge | Composting | Aeration | Piles | Wastewater management | Wastewater treatment plants | Sewage | Colorado | United States

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