Skip to main content

On-Line Nitrate/Nitrite Probes for BNR Process Control

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Real time nitrogen monitoring plays an increasingly important role for the successful biological nutrient removal at wastewater treatment plants. Though traditionally dissolved oxygen has been the main process control parameter a greater understanding of the biological mechanisms and process conditions like nitrite/nitrate concentrations to achieve lower effluent values becomes necessary, specifically in terms of nutrient reduction. If the process is incorrectly monitored, nitrite may build up to toxic concentrations. When the facility's influent ammonia loading fluctuates depending on the origination of wastewater, manual control of aeration is not only difficult, but can create more problems. If too much air is delivered, complete the nitrification process can be achieved, but reduced denitrification results in high nitrates in the effluent. When reliable NO3 and NO2 readings are captured on-line, correct process control would lead not only to reduced aeration blower power but also reduced staff response and adjustment time of aeration equipment. This will also reduced chlorine consumption at the back end of the plant.

In this paper, the reliability of the online nitrite/nitrate monitors and the applicability of their readings in automatic control systems are discussed with regards to operational cost savings and technical feasibility. Great advances in sensors and analyzer technologies have been made over the past decade. An overview of UV sensors and techniques for monitoring of NO3 and NO2 will be discussed. Other non-UV type analyzers that could be used to monitor NO3 and NO2 are also presented.
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: 2006-01-01

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 These proceedings are not peer reviewed.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