Skip to main content

Evaluation of Several Water Reclamation Facilities Employing Biological Nutrient Removal In North Carolina

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

As an increasing number of lakes and streams are being classified as impaired or nutrient sensitive, a greater burden is placed on municipalities to comply with water quality restrictions. During the past decade in North Carolina, specifically in the Neuse River and Tar-Pamlico River Basins, many municipalities were required to upgrade their wastewater treatment plants for nutrient removal capability, either nitrogen or phosphorus or both. Municipalities discharging to the Neuse River Basin are required to meet some of the most stringent effluent limits in North Carolina. All streams and rivers in the Neuse River Basin were classified as nutrient sensitive waters and a 2.0 mg/L phosphorus limit was imposed on direct discharge facilities. A Total Maximum Daily Load (TMDL) for a 30% nitrogen reduction goal was also imposed in the Neuse Basin. The Tar-Pamlico River Basin was declared nutrient sensitive in the late 1980's for nitrogen and phosphorus, and a goal was established to reduce nitrogen and phosphorus in combination by 30% compared to 1991 levels. The purpose of this paper is to provide an evaluation and overview of several biological nutrient removal facilities currently in operation in the Neuse River and Tar-Pamlico River Basins of North Carolina.

A flexible design of a wastewater treatment plant is critical to meeting nutrient limits under changing regulation and possibly changing influent wastewater characteristics. The selected facilities are almost fully optimized for biological nutrient removal, even under carbon limited influent conditions. All of the facilities discharge nitrogen and/or phosphorus at current effluent limits below what is required by the permit. It is likely that these facilities will be able to meet an additional 10% reduction in nitrogen in the near term and will most likely meet an additional nitrogen reduction requirement in the future. Although, as the target effluent nitrogen concentration decreases the probability of compliance may decrease. Achieving a lower target concentration of effluent nitrogen will be less probable based on day-to-day plant operations under dynamic conditions.
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: 2002-01-01

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