Skip to main content
padlock icon - secure page this page is secure


Buy Article:

$9.50 + tax (Refund Policy)

Current state-of-the-art activated sludge simulation programs assume average, or “lumped,” system characteristics, rather than accounting for the distribution of individual bacterial states (such as internal concentrations of the microbial storage products polyphosphate, glycogen, and polyhydroxybutyrate) likely to occur in a given population. These individual states are hypothesized to vary because hydrodynamic variability produces a variety of possible histories in terms of upstream reactor residence times. This is particularly true in systems containing completely mixed reactors, where residence times vary across hydraulic elements. A MATLABbased bioreactor simulation program was built based on a standard biokinetic model (ASM2) to predict the potential effects of distributed states on simulation of the enhanced biological phosphorus removal (EBPR) process. A simple two reactor, anaerobic-aerobic EBPR system was simulated assuming either distributed or lumped characteristics. Lumped simulations consistently overestimated EBPR performance compared to distributed simulations, potentially leading to underestimation of required reactor sizes required for successful EBPR. The results demonstrated that improvements to activated sludge systems design and process control are possible by accounting for the distributed characteristics of their resident populations. Further research is needed for the development of the distributed simulation approach for its practical application.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 01 January 2004

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 These proceedings are not peer reviewed.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