Skip to main content

A COMPARATIVE STUDY OF TEMPERATURE-PHASED DIGESTION TO SINGLE STAGE THERMOPHILIC AND MESOPHILIC DIGESTION

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Three bench scale anaerobic digestion systems, operating at the same time, treated a blend of primary and secondary residuals (at 4% total solids) from Blue Plains wastewater treatment plant (WWTP), Washington, D.C. The digestion systems were temperature-phased anaerobic digestion (TPAD), single stage thermophilic (SST) and single stage mesophilic (SSM) anaerobic digestion. Solids retention time (SRT) and organic loading rates (OLR) were changed between each of three study phases. TPAD demonstrated the best performance by destroying more volatile solids and having lower residual biological activity than the other digesters during each phase of the study. Maximum volatile solids reduction (VSR) was 67% by the TPAD system with a 15 day SRT (each stage at 7.5 days). The a SSM digester had 9% higher VSR than the SST digester when operated at 20 days SRT, indicating that a fraction of the feed sludge was only degraded under mesophilic conditions. The results of this study, combined with additional studies on odor production and dewatering, have demonstrated an advantage to TPAD digestion as a process for Blue Plains.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2005-01-01

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 These proceedings are not peer reviewed.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