Skip to main content

Shelter From The Storm: Integrated Fixed Film Activated Sludge Protects Nitrifiers From Toxic Upsets

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The potential benefits of integrated fixed film activated sludge (IFAS) with respect to protecting against chemical inhibitors of nitrification were evaluated in a pilot-scale study. Parallel IFAS and non-IFAS (Control) trains in A2O configurations were fed primary effluent from a full scale system. Chemical inhibition was evaluated in batch tests of both suspended phase (activated sludge) and attached phase (biofilm on IFAS media) samples. Attached biomass from a downstream aerobic reactor had approximately 50% greater specific rates of nitrification than either suspended phase biomass. Attached biomass was consistently more resistant to chemical inhibition than was suspended phase biomass for all chemicals tested. For example, at 0.2 mg copper/L, the Control system experienced 53% inhibition, while both of the IFAS attached growth phases experienced only 13 to 14% inhibition. These results suggest that IFAS systems may be useful for providing greater process stability due to increased resistance to inhibition.
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: Integrated fixed film activated sludge; ammonia; inhibition; nitrate; nitrification; process stability; toxic chemicals

Document Type: Research Article

Publication date: 2010-01-01

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 These proceedings are not peer reviewed.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