Skip to main content

Investigating the Process Constraints of the Addition of Codigestion Substrates to Temperature Phased Anaerobic Digestion

Buy Article:

$17.50 plus tax (Refund Policy)


The City of Tacoma is evaluating the feasibility of a co-digestion program at its Central Treatment Plant. As part of this evaluation an understanding of the impact the addition of codigestion substrate will have on the digestion process is required. This study presents data associated with testing of co-digestion substrates in the temperature phased anaerobic digesters that serve as the primary mechanism for solids reduction at CTP. Bench-scale, continuous systems and batch (Biochemical Methane Potential), tests were used to evaluate process impacts and methane generation potential from a variety of substrates. BMP testing indicated that there is the potential for toxicity with some substrates, but data was insufficient to determine the mechanism. BMP testing also indicated that most of the substrates tested had greater methane potential than the raw sludge solids. Bench-scale testing showed that, for the loading rates tested, there were no adverse effects and there is potential for synergistic enhancement of solids destruction for some materials.

Keywords: BMP; FOG; co-digestion; methane; thermophilic digestion

Document Type: Research Article


Publication date: January 1, 2009

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect 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