Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

This is a preliminary investigation of a method for timely monitoring of Biochemical Oxygen Demand (BOD) in wastewater. This investigation is part of an automation project to develop online BOD monitoring for process control in wastewater treatment plants to prevent process upsets due to shock loadings or toxic events. Tests were made on the Siepmann und Teutscher GmbH (STIP) BIOX-1010 (presently a part of ISCO Inc.) which uses a bioreactor containing a previously established large population of bacteria from the wastewater to measure soluble BOD in three minutes, designated BOD-M3. Thus, although the quantity that it directly measures is soluble BOD, the calibration measurements allow the operators to establish a conversion factor kept in its computer control, so that an estimate of BOD5 is displayed. This instrument has been used in a number of applications in Europe, but has not been applied in the United States to process control. Comparisons were made to the results of the standard laboratory BOD5 procedure on primary effluent at the Terminal Island Treatment Plant (TITP) of the Bureau of Sanitation of the City of Los Angeles in 1994-95. Agreement between the two types of tests was excellent but the testing had to be halted after a few weeks because of biogrowth in the instrument and a leak. Similar results and difficulties occurred during a similar test of the Nissin Electric BOD-2000 (Iranpour, et al., 1997), an instrument that estimates BOD5 from soluble BOD measurements made during a 30 minute measurement cycle using a yeast impregnated biomembrane. Thus, the chief issues in using such instruments are ambient temperature of the instrument, wastewater pH and salinity, apparatus needed to provide samples to the instrument, durability, screening, filtering, and disinfection needed to prevent or remove clogging. Since the BIOX-1010 instrument more closely simulates the operation of secondary treatment, such designs appear preferable to the biomembrane technology. Experiments are to be resumed at Los Angeles Glendale Water Reclamation Plant. We have just installed the BOD instrument and are in the startup operations. We briefly discuss developments that appear needed for using respirometry for this application to process control. Technical and economical characteristics relevant to a choice of instrument are compared for these two devices. Additional information will be presented for LAG on the new BIOX 1010 instrument results.
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: 2000-01-01

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