Skip to main content

Model-Based Evaluation of Competition between Polyphosphate- and Glycogen-Accumulating Organisms

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


The competition between polyphosphate-accumulating organisms (PAOs) and glycogenaccumulating non-polyphosphate organisms (GAOs) were evaluated using mathematical model simulations. The models for PAOs and GAOs were calibrated and able to provide satisfactory predictions of acetate, ortho-phosphate, biomass glycogen, biomass polyhydroxyalkanoates (PHAs), and biomass concentrations compared with experimental observations. It was demonstrated that both anaerobic acetate uptake and aerobic distribution of stored PHAs are important factors in determining the competition between PAOs and GAOs. At 30°C and 10-day sludge age, the kinetic advantage of anaerobic acetate uptake for GAOs is one of the most important factors in determining the competition between PAOs and GAOs. At 30°C and 3-day sludge age, aerobic glycogen formation rate for GAOs (qglGAO), in addition to anaerobic acetate uptake, was demonstrated to be an important factor in determining the dominance between PAOs and GAOs. In addition, the mathematical models were able to simulate the coexistence of PAOs and GAOs at 30°C and 5-day sludge age

Document Type: Research Article


Publication date: January 1, 2002

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial 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