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Methods for assessing biochemical oxygen demand (BOD): a review.

S Jouanneau1, L Recoules2, M J Durand1

  • 1University of Nantes, UMR CNRS 6144 GEPEA CBAC, Campus de la Courtaisière, IUT, 18 Bd G. Defferre, 85035 La Roche sur Yon, France.

Water Research
|December 10, 2013
PubMed
Summary

Traditional Biochemical Oxygen Demand (BOD5) water quality testing is slow and variable. Recent technologies offer faster, more reliable alternatives for assessing biodegradable organic load.

Keywords:
Assessment methodsBiochemical oxygen demandBiodegradationBiosensorMonitoring

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Microbiology

Background:

  • Biochemical Oxygen Demand (BOD) is a key water quality indicator for biodegradable organic matter.
  • The standard BOD5 test is time-consuming (5 days) and exhibits laboratory variability (up to 20%).
  • Variability is often linked to microbial diversity in the inoculum used for testing.

Purpose of the Study:

  • To review and analyze emerging technologies for water quality assessment.
  • To compare the performance of newer, faster methods against traditional BOD5 testing.
  • To identify the advantages and disadvantages of various time-saving water quality analysis techniques.

Main Methods:

  • Literature review of scientific publications over the last two decades.
  • Analysis of technical features of principal alternative methods.
  • Comparative assessment of method performance: measuring window, reliability, and robustness.

Main Results:

  • Several newer technologies offer reduced testing times compared to BOD5.
  • These alternative methods demonstrate improved reliability and consistency.
  • Performance metrics like measuring window, robustness, and accuracy vary across different technologies.

Conclusions:

  • Emerging technologies provide viable, faster alternatives to traditional BOD5 water quality assessment.
  • Selection of the optimal method depends on specific laboratory needs and performance requirements.
  • Further research can refine these methods for broader application in water quality monitoring.