Skip to main content

EVALUATION OF AUTOTROPHIC DENITRIFICATION AND HETEROTROPHIC NITRIFICATION IN SIMULTANEOUS BIOLOGICAL NUTRIENT REMOVAL SYSTEMS

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Simultaneous biological nutrient removal (SBNR) is the occurrence of significant biological nutrient removal in biological wastewater treatment systems where defined anaerobic and anoxic zones do not exist. There is growing evidence that significant SBNR can occur in many systems, including those already configured for BNR. SBNR offers several potential advantages, but they cannot be fully realized until the mechanisms responsible for SBNR are better understood. Consequently, a research program has been initiated. The basic hypothesis of this research program is that three mechanisms might be responsible for SBNR: reactor macro-environment, floc micro-environment, and novel microorganisms.

The research reported in this paper is focused on evaluation of the importance of novel microorganisms for nitrogen removal. A procedure was been developed as a screening tool to determine the relative significance of the activities of microorganisms capable of autotrophic denitrification and heterotrophic nitrification-aerobic denitrification in biological nutrient removal systems. Previously the nutrient removal capabilities of seven full-scale closed loop bioreactors known as Orbal™ oxidation ditches were evaluated. Data abd microbiological observations suggested that SBNR occurs in these systems(Daigger and Littleton, 2000). Three of the plants studied in the previous research were studied in this research. The results indicated that novel microorganisms were not substantial contributors to SBNR in the plants studied. They also demonstrated that the developed procedures are readily applicable to determine the activities of novel nitrogen removing microorganisms in systems accomplishing SBNR.
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: 2000-01-01

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 These proceedings are not peer reviewed.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
X
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