Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial


This American Bottoms Regional Wastewater Treatment Facility is an activated sludge based treatment process that receives approximately 70% of its organic load from industrial sources. The plant consists of primary clarifiers, an activated sludge process that can be operated as a PACT process, secondary clarification and disinfection by chlorination. The plant treats a heavily industrialized wastewater from a variety of industrial sources which contribute metals, ammonia, organic nitrogen, chloro and nitroanilines, chloro and nitrophenols and other organic compounds. Much of the industrial load is pretreated at a centralized pretreatment facility referred to as the PChem plant which provides oil removal, acid neutralization, metals precipitation and clarification. The PChem effluent enters the American Bottoms plant upstream of the activated sludge process where it is blended with the primary effluent before receiving biological treatment. A significant element of the plants operation is providing nitrification. Historically the plant received influent wastewater ammonia concentrations of up to 200 mg/L. Local limits were developed to significantly reduce the ammonia loads through source controls. Now the plant receives ammonia levels of 10 to 30 mg/L but also receives organic nitrogen concentration up to an additional 50 mg/L or TKN concentrations up to 80 mg/L. The plant is generally successful in maintaining nitrification; however, there have been three instances of significant upsets. The subject of this paper is the investigation of these upsets.
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: 01 January 2005

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 These proceedings are not peer reviewed.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