Skip to main content

MYTHS OF NITRIFICATION TALES OFTEN TOLD THAT ARE NOT TRUE

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

The design, construction and/or adaptation of wastewater treatment plants for nitrification have been occurring for approximately thirty years. Over this time the basic principles of nitrification have either been ignored, elaborated upon, modified and, in some cases had falsehood presented as truth. These myths about nitrification include

The required solids retention time (SRT)


The required hydraulic retention time (HRT)


That the BOD must fall to 20 mg/L before nitrification occurs


The need for two-stage treatment


The settling properties of nitrifying sludge


The allowable surface overflow rate


The mixed liquor dissolved oxygen (DO) required


The return activated sludge (RAS) flow required


These myths are examined and shown to be untrue, or at least not true in many instances, and restrict the operators' ability to produce good effluent under a variety of conditions. The paper shows a rational basis for design and a performance envelope for nitrification.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864705783858864

Publication date: 2005-01-01

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 These proceedings are not peer reviewed.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