Skip to main content

Laboratory Development of Site-specific Equations for BOD to TOC Conversion and Application in NPDES and Treatment Processes Control

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

The need for reliable and rapid process control options in wastewater treatment for ocean discharging facilities is perhaps equal only in importance to the perceived need to maintain compliance with their NPDES effluent discharge limits. Thus the laboratory at the ocean discharging facility of the City of Santa Cruz's WWTF, in cooperation with the California Regional Water Quality Control Board at San Luis Obispo, developed equations that express the long-term relationship between TOC and BOD measurements in the Influent and Effluent of the facility. The 2-year study culminated in the development of the following changes to the facility's NPDES limits:

The 30 day limit of 30 mg/L of BOD in the effluent with its site-specific equivalent of 15.5 mg/L of TOC .

Replacing the 7 day average limit of 45 mg/L of BOD in the effluent with its specific equivalent of 25 mg/L of TOC . And

Replacing the 30 day minimum BOD removal of 85% with its site-specific equivalent of 70% TOC Removal .

This study covered the typical wasteload (BOD/TOC) characteristics and the operational practices at the City of Santa Cruz WWTF from May 2005 through November 2006 to meet a standard definition of long-term requirement for the conversion exercise specified at 40CFR133.104(b).

This presentation will discuss data and the equations derived for establishing the numeric equivalence between individual BOD control limits to their TOC control limits. In addition, a graph was developed for the use of operators to convert the legacy

BOD values to TOC for process control activities.

The effective realization of TOC equivalence for BOD at a secondary wastewater treatment plant improves the options for rapid process control, and cost effective compliance measurement. The

following are tables of data and graphs developed for the transformation of the facility's NPDES effluent limits and process control options.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: BOD; NPDES; Site-specific; TOC

Document Type: Research Article

Publication date: 2009-01-01

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