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A Reduced‐scale Method for the Determination of the Dichromate Value (Chemical Oxygen Demand) of Sewage and Trade Effluents
Author(s) -
FEARN R. J.,
HETHERINGTON W. H.,
JAECKEL S. M.,
WARD C. D.
Publication year - 1967
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1967.tb02757.x
Subject(s) - potassium dichromate , reagent , effluent , chemistry , chemical oxygen demand , value (mathematics) , sewage , pulp and paper industry , wastewater , inorganic chemistry , environmental science , mathematics , environmental engineering , organic chemistry , engineering , statistics
A description is given of a convenient and reliable analytical method for the determination of the dichromate value of sewage and trade effluents. The method is more rapid than existing macro‐scale procedures and is sufficiently analytically accurate and reproducible for the calculation of trade‐waste treatment charges. Oxidation with potassium dichromate is carried out in boiling 50% (vol./vol.) sulphuric acid, with a total reagent volume of 30 ml.