Skip to main content

Denitrification Stoichiometry and Kinetics of Moving Bed Biofilm Reactor

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 Moving Bed Biofilm Reactor (MBBR) technology was determined to be a promising and viable process for denitrification to achieve total nitrogen of between 3–4 mg N/L and nitrate concentration below 1 mg N/L. A post-denitrifying pilot MBBR system was set up at the Blue Plains AWTP (Advanced Wastewater Treatment Plant) and a bench scale kinetic evaluation was conducted. This study is a compilation of the ex-situ bench evaluations of the media grown in the pilot reactor. Denitrification kinetics and stoichiometry of MBBR technology using methanol as an external carbon source were investigated. The average specific denitrification rates (SDNR) were determined between 1.3 – 2.0 g NOx-N/m2-day, and the stoichiometric C:N ratios were 4.6 – 5.8 mg COD/mg NOx-N for a temperature range of 13 – 18 °C. Experimental values were used to obtain KsNOx-N (effective NOx-N half saturation constant) for different temperatures using a model developed based on the Monod kinetic expression and a spreadsheet interactive search routine. Values of effective KsNOx-N were observed between 0.6 and 1.1 mg N/L for experimental temperatures ranging from 12.5 to 20 °C.

Keywords: Biomass Density; Denitrification; Half Saturation Constant; Moving Bed Biofilm Reactor; Specific Denitrification Rate

Document Type: Research Article


Publication date: January 1, 2009

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 These proceedings are not peer reviewed.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
Partial Open Access Content
Partial 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