Skip to main content

Rehabilitation of the BNR Facilites at the Greenville Utilities Commission Wastewater Treatment Plant

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The Greenville Utilities Commission Wastewater Treatment Plant (GUC WWTP) is a 17.5 mgd treatment plant designed to meet effluent total nitrogen and total phosphorus limits of 6.0 mg/L and 2.0 mg/L, respectively, through biological nutrient removal. The treatment plant is divided into two separate activated sludge systems; the north and south plants. The treatment plant has consistently met effluent limits operating the south plant in a full biological nutrient removal mode and the north plant in a nitrification mode.

The north plant was originally designed to operate as a two-stage biological nutrient removal system; however, consistent denitrification was never attained. In addition, the aeration basins utilized a rotating bridge assembly to provide aeration and mixing in the anoxic zones. The rotating assemblies required significant maintenance and were in need of replacement. A study was performed to determine the most cost effective approach to rehabilitating the existing tanks. The results of the study identified limitations of the existing system to provide for denitrification, and the most cost effective approach for rehabilitation of these tanks was to provide for two-stage denitrification.

The existing tanks were redesigned for two-stage biological nitrogen removal utilizing an anoxic zone followed by an aeration zone with an internal nitrified recycle flow. The anoxic zone was mixed with submersible mixers and the aeration zone was retrofitted with fine bubble diffusers. The flow path through the tanks was converted to a plug flow arrangement. This paper addresses the conversion to and performance of the existing tanks as a two stage BNR process for total nitrogen and phosphorus reduction.
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: 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 These proceedings are not peer reviewed.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
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