Skip to main content

The Second Generation of IFAS and MBBR: Lessons to Apply

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


Powerful models and a wealth of data are available for designing integrated fixed film activated sludge (IFAS) and moving bed biofilm reactor (MBBR) facilities today, that were not available when designing the “first generation” of North American facilities in the 1990's. Engineers now have the tools they need to sharpen designs, and minimize capital and operating costs. This paper discusses lessons learned in the design and startup of several full-scale facilities. Operator observations at these facilities have proven to be invaluable in the design of “second generation” facilities in Broomfield, Colorado (Phase 2 expansion); West Haven, Connecticut; Westchester County, New York; Fort Myers, Florida and several others. Pilot and bench testing, optimum media placement, sieve design and approach velocities, residual dissolved oxygen, mixing requirements and dynamic process modeling are discussed with regard to the first-generation facilities. Second-generation design configurations are also compared for a hypothetical new plant, using the BioWin simulator. This paper summarizes the current state of science, and identifies future research needs for IFAS and MBBR design.

Keywords: full-scale; integrated fixed film activated sludge; modeling; moving bed biofilm reactor; nutrient removal; operations

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 These proceedings are not peer reviewed.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