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bpk
bod
Last Update: 2017-04-06
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bpk je opredeljen kot masa raztopljenega kisika, potrebna za biokemijsko oksidacijo določenega volumna raztopine snovi pod predpisanimi pogoji.
the bod is defined as the mass of dissolved oxygen required by a specified volume of solution of the substance for the process of biochemical oxidation under prescribed conditions.
namen te metode je izmeriti biokemijsko potrebo po kisiku (bpk) trdnih ali tekočih organskih snovi.
the purpose of the method is the measurement of the biochemical oxygen demand (bod) of solid or liquid organic substances.
bpk v predhodni raztopini se izračuna po izbrani normirani metodi in pretvori v grame bpk na gram preskusne snovi.
the bod contained in the preliminary solution is calculated according to the selected normalised method, and converted into grams of bod per gram of tested substance.
skupni delež odstranitve ro, bpk, doc, kpk itd. za preskusno in kontrolno enoto se lahko izračuna z enačbo:
the overall percentage removals ro, of bod, doc, cod etc., for the test and control units can be calculated from:
snovi, ki neugodno vplivajo na kisikove razmere (in se lahko merijo s parametri, kot so bpk, kpk, itd.).
substances which have an unfavourable influence on the oxygen balance (and can be measured using parameters such as bod, cod, etc.).