Skip to main content

Operation and Performance of East Greenwich, Rhode Island Nitrogen Removal Filtration System to Achieve 5 mg/L

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

In July 2001, the Rhode Island Department of Environmental Management and the Town of East Greenwich entered into a Consent Agreement to upgrade the 1.7 mgd wastewater treatment plant to meet a strict new seasonal total nitrogen limit of 5 mg/L. Utilizing proprietary Severn Trent Services treatment technology, Tighe & Bond, Inc. designed an innovative upgrade to reduce nutrient loading to Greenwich Cove, an important recreational area of Narragansett Bay.

The nitrogen removal system utilizes a tertiary two-stage, biological filtration process where ammonia is oxidized to nitrate (nitrification) in the first stage and the nitrate is subsequently reduced to nitrogen gas (denitrification) in the second stage. The nitrogen removal system initiated operation in April 2006 and the data collected during the three compliance periods of 2006, 2007, and 2008 indicate that the process performance of the system has been excellent. The WWTP successfully met the 5 mg/L total nitrogen limit during all compliance periods, including the colder weather month of May.

Keywords: Biological Aerated Filter; Denitrification Filter; Nitrogen Removal; Temperature

Document Type: Research Article

DOI: https://doi.org/10.2175/193864709793956554

Publication date: 2009-01-01

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 These proceedings are not peer reviewed.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