Skip to main content

Lessons Learned from Startup and Commissioning of Three IFAS Facilities

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The Integrated Fixed Film Activated Sludge (IFAS) process is a relatively new technology for controlling nitrogen and phosphorus discharges from wastewater treatment facilities in the US. There is widespread interest in this technology, especially for retrofitting existing facilities that face site constraints, expansion challenges, and/or the desire for a high quality effluent. Three facilities, Henry N. Wochholz Wastewater Treatment Plant (WWTP) in Yucaipa, California; Wildcat Hill WWTP in Flagstaff, Arizona; and a confidential facility in South Central US are covered in this paper. This paper discusses the startup challenges faced by these facilities, including IFAS basins loading, media containment, and aeration control. Challenges such as foaming during startup or stable operation have not been reported by most other IFAS facilities, which include Broomfield, Colorado; Cheyenne, Wyoming; and Flagstaff, Arizona. The exceptions have been Greensboro, North Carolina and the Region of Peel, Ontario, Canada. The Wochholz plant has experienced serious foaming problems during startup and some occasional foaming since the expansion has been completed. The confidential facility in South Central US has also reported some foaming issues. This paper discusses the causes, their investigation, and the measures taken to control foam. Recommendations for troubleshooting an IFAS plant during startup and operation are also discussed.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: IFAS; fixed-film; foaming; media; small footprint; startup; troubleshooting

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 These proceedings are not peer reviewed.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
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