Innovative Treatment of Septage at Small Wastewater Treatment Plants

Authors: May, Stephen R.; Roys, Michael; Gellner, W. James; Al-Omari, Khamis A.

Source: Water Practice, Volume 2, Number 4, June 2008 , pp. 1-15(15)

Publisher: Water Environment Federation

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Abstract:

The objective of this paper is two-fold: 1) present the innovative concepts that were evaluated for treating septage using aerobic co-digestion of thickened waste activated sludge (WAS) and domestic septage, routing only the digesters decant to the plant headworks; and 2) discuss results of the full-scale pilot program for this co-digestion process, which was conducted at the 1.2- million gallons per day (mgd) Rollin-Woodstock Wastewater Treatment Plant (WWTP) in Lenawee County, Michigan between October 2006 and January 2007. The full-scale pilot program used the two existing aerobic digesters at the plant to accept, screen, and co-digest domestic septage and WAS.

Keywords: SEPTAGE; WASTE ACTIVATED SLUDGE; AEROBIC DIGESTION; CO-DIGESTION; ROLLIN-WOODSTOCK; CENTRAL LENAWEE

Document Type: Research article

DOI: 10.2175/193317708X335217

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