Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

A municipal wastewater treatment plant (WWTP) receiving industrial dyeing discharge containing acid black 1 (AB1) failed to meet discharge limits, especially during the winter. Dyeing discharge was mixed with domestic sewage in volumetric ratios reflecting the range received by the WWTP and fed to sequencing batch reactors at 22°C and 7°C. Analysis of the various nitrogen species revealed complete nitrification failure at 7°C with more rapid nitrification failure as the dye concentration increased; slight nitrification inhibition occurred at 22°C. Dye-bearing wastewater also reduced COD removal at 7°C and 22°C and increased effluent TSS at 7°C. Activated sludge quality at 7°C deteriorated, as indicated by excessive foaming and the presence of filamentous bacteria and by decreased endogenous and exogenous oxygen uptake. Decreasing AB1 loading led to partial nitrification recovery. Eliminating the dye-bearing discharge to the full-scale WWTP resulted in improved performance bringing the WWTP into compliance with discharge limits.
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 These proceedings are not peer reviewed.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