Skip to main content

Can we Avoid Nitrification? Tracking the In-Plant Fate of Nitrogen at the Hopewell Regional Wastewater Treatment

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

The allowable nutrient discharge loading for a publicly owned industrial treatment works (POITW) with high industrial loading treating approximately 27 million gallons per day (mgd) is being capped based on the Chesapeake Bay and its tributaries nutrient control regulations adopted by the Virginia Department of Environmental Quality. Based on an analysis of historical data, the facility has experienced an increase in effluent total nitrogen between 2000 and 2004 such that it cannot meet its proposed waste load allocation (WLA) at current flow conditions, without implementing source controls or in-plant nitrogen removal. Approximately one-half of this increase is the result of an increase in influent organic-N loading to the plant from both domestic and industrial sources. The other one-half is attributed to expected variability in the amount of TKN (organic-N and ammonia-N) that the treatment facility removed. To explain this variability and to identify plant practices or in-plant sources that may contribute to periodic lower nitrogen removal, the POITW initiated development of an optimization study for TKN removal. The objectives of the study were to determine fate of nitrogen species through the plant, and identify in-plant sources of nitrogen or possible operational practices that could be addressed to reduce effluent nitrogen. The study developed historical mass balances to track the fate of nitrogen within the plant by combining historical data with more detailed results from a short-term intense sampling effort. Tracking internal nitrogen sources, such as high-TKN solids recycle streams, provided a clearer picture of the uncontrollable variability in TKN removal that was observed in the plant's past performance. Understanding the causes of this variability will enable the facility to optimize TKN removal such that the plant removes the maximum amount of nitrogen possible for the system without nitrification, which may help the POITW to meet its proposed WLA at current flow conditions.
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: 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
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