Skip to main content

Innovative Treatment of Septage at Small Wastewater Treatment Plants

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

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 and only routing the digesters decant to the plant headworks, and 2) summarize and present the results of the full-scale pilot program of this co-digestion process that was conducted at the 1.20 million gallons per day (mgd) Rollin-Woodstock Wastewater Treatment Plant (WWTP) in Lenawee County, Michigan. The full-scale pilot program, which was conducted between October 2006 and January 2007, used the two existing aerobic digesters at the plant to accept, screen and co-digest domestic septage and WAS.

In March 2006, the Lenawee County Drain Commissioner's Office retained Hazen and Sawyer, P.C. to conduct a septage acceptance study and complete a Project Plan report for the Central Lenawee Wastewater Treatment (WWTP) and the Rollin-Woodstock WWTP, located in Lenawee County, Michigan. The study was completed in June 2006, in response to the amendments to the State of Michigan Septage Waste Servicers law and due to the lack of septage receiving and treatment facilities within the County.

Based on the evaluation results and the limited or lack of capacity in the liquid stream at the plants, treatment of septage through the sludge handling process (solids stream) was explored and recommended, using aerobic co-digestion process of thickened waste activated sludge (WAS) and domestic septage. Due to the lack of experience, operational data and basis of design for using this aerobic co-digestion process, the report also recommended a full-scale pilot program to be implemented at the Rollin-Woodstock WWTP by using two of the existing aerobic digesters, for accepting, screening and co-digesting domestic septage with WAS. The goals of the pilot program were to gather data on the septage characteristics that can be used for properly sizing the plant upgrades, and determine the optimum operational procedures and conditions for accepting septage at the plant.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

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

Document Type: Research Article

Publication date: 01 October 2007

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more