Biochemical Oxygen Demand

Biochemical Oxygen Demand
  The weight of oxygen taken up mainly as a result of the oxidation of the constituents of a sample of water by biological action; expressed as the number of parts per million of oxygen taken up by the sample from water originally saturated with air, usually over a period of five days at 20 degrees centigrade. A standard means of estimating the degree of contamination of water.

Energy terms . 2014.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Biochemical oxygen demand — or Biological Oxygen Demand (BOD) is a chemical procedure for determining how fast biological organisms use up oxygen in a body of water. It is used in water quality management and assessment, ecology and environmental science. BOD is not an… …   Wikipedia

  • biochemical oxygen demand — n. 1. the amount of dissolved oxygen needed to decompose the organic matter in waste water: a high BOD indicates heavy pollution with little oxygen remaining for fish 2. the organic matter in waste water …   English World dictionary

  • biochemical oxygen demand — biocheminis deguonies suvartojimas statusas T sritis ekologija ir aplinkotyra apibrėžtis Vandens užterštumo organinėmis medžiagomis rodiklis – ištirpusio deguonies, reikalingo tam tikromis sąlygomis organinėms vandens priemaišoms biologiškai… …   Ekologijos terminų aiškinamasis žodynas

  • biochemical oxygen demand — biochemical oxygen de·mand di .mand n the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage) called also biological oxygen demand, oxygen demand …   Medical dictionary

  • biochemical oxygen demand — biological oxygen demand …   Dictionary of ichthyology

  • biochemical oxygen demand — the oxygen required by aerobic organisms, as those in sewage, for metabolism. Abbr.: BOD Also called biological oxygen demand. [1925 30] * * * ▪ biology       the amount of oxygen used by microorganisms in the process of breaking down organic… …   Universalium

  • biochemical oxygen demand — bi′ochem′ical ox′ygen demand n. biochem. the oxygen required by aerobic organisms, as those in sewage, for metabolism Also called biological oxygen demand • Etymology: 1925–30 …   From formal English to slang

  • biochemical oxygen demand — noun The amount of oxygen needed by aerobic microorganisms to decompose all the organic matter in a sample of water; it is used as a measure of pollution. Syn: biological oxygen demand …   Wiktionary

  • biochemical oxygen demand — noun the amount of oxygen aerobic microorganisms need to decompose organic pollutants in water or waste; used as an index of the degree of organic pollution in water. Abbrev.: BOD Also, biological oxygen demand …  

  • biochemical oxygen demand — noun : the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage) called also biological oxygen demand …   Useful english dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”