Skip to main content

COMPARISON OF DIFFERENT CONTROL STRATEGIES FOR ENERGY SAVING IN A BIOLOGICAL NITROGEN REMOVAL ACTIVATED SLUDGE PROCESS

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

In this paper three different control strategies for energy saving were applied to modified Ludzak-Ettinger process. In first strategy the internal recycling flow rate was maintained constant and a fuzzy logic controller for aeration system was used that manipulates the air flow rate of blowers in order to maintain the dissolved oxygen concentration in the aerobic zone at a desired set point (2 mg/l). In the second strategy, a fuzzy logic controller for internal recycling was used. This controller maintains nitrate concentration in the anoxic zone at a desired set point (1 mg N-NO3/l). Finally, in the third strategy, a supervisory control layer was applied to the fuzzy logic controllers. In the supervisory control layer, the optimum set points for DO concentration (aerobic zone) and nitrate concentration (anoxic zone) are determined. Through a simulation study it was shown that important energy consumption saving for internal recycling is obtained when the control strategies are applied. Moreover, the application of different control strategies improved the process performance. In general, the best results were obtained using the third strategy.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2004-01-01

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 These proceedings are not peer reviewed.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