Optimizing the Conversion to Step-Feed Biological Nitrogen Removal Reduces Nitrogen Credit Costs

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

The Metropolitan District Commission operates four wastewater treatment plants serving the city of Hartford Connecticut and its surrounding communities and which are located in the Long Island Sound (LIS) watershed. The LIS Comprehensive Conservation and Management Plan adopted by Connecticut, New York and the USEPA calls for a basin-wide reduction of nitrogen from 1999 through 2014. Connecticut enacted a nitrogen trading program for more cost effective nitrogen removal. The District implemented an interim upgrade based on step-feed biological nitrogen reduction for the 303 ML/d (80 mgd) Hartford Water Pollution Control Facility. The interim upgrade provided cost effective benefits of maximizing use of existing tankage and rapid implementation. After more than two years of operation the step-feed conversion reduced both effluent nitrogen and cost of nitrogen credit purchase. These results reflected the dedication of the plant staff to address challenges following startup and to develop operating strategies to optimize the treatment process.

Keywords: BNR; Biological nitrogen reduction; step-feed activated sludge

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802713063

Publication date: January 1, 2011

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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