Biochemical oxygen demand The quantify of oxygen utilized by a mixed population of microorganism in the aerobic oxidation of the organic matter in a sample of wastewater at a temperature of 20 degrees Celsius
Biological oxygen demand, meaning the amount of oxygen required for biological mineralisation of organic (or inorganic) degradable matter in sewage or in a natural watercourse This indirect unit is widely applied because it is easy to measure in the laboratory for samples that contain a variety of (perhaps unknown) compounds BOD is harmless in itself, but excessive supplies can cause oxygen depletion BOD is expressed as a mass (g or kg oxygen), a concentration (mg oxygen per litre), or as a supply rate (oxygen mass per time unit)
By measuring the amount of oxygen bacteria use over a period of time, the amount of organic matter in that sample can be determined This test is required to be done weekly and is also reported in mg/L A high BOD in the effluent is undesirable because it would deplete oxygen needed by fish in the river
Biochemical Oxygen Demand - the rate at which microorganisms use the oxygen in water or wastewater while stabilizing decomposable organic matter under aerobic conditions In decomposition, organic matter serves as food for the bacteria and energy results from this oxidation
Biochemical Oxygen Demand An index of water pollution which represents the content of biochemically degradable substances in a water of effluent sample The oxygen up-take by micro-organisms together with the sample is measured in grams per cubic metre
The Board of Directors of the Society for Creative Anachronism, Inc , a non-profit tax-exempt corporation dedicated to research and recreation of the environment of pre-Seventeenth Century Western Culture There is no specific form of address for Members of the Board, as they hold a purely mundane office
If something bodes ill, it makes you think that something bad will happen in the future. If something bodes well, it makes you think that something good will happen. She says the way the bill was passed bodes ill for democracy Grace had dried her eyes. That boded well. A past tense of bide
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