Colour and Absorbance of Textile Effluent
topic
Textile effluent colour is quantified by spectrophotometric absorbance at three wavelengths of 436, 525, and 620 nanometres representing yellow, red, and blue spectral regions respectively, expressing colour as spectral absorption coefficient in reciprocal metres according to German AbwV textile wastewater ordinance and EN ISO 7887 standard methods.
Role
Monitors the colour contribution of unfixed dye discharge to receiving water bodies where visible coloration suppresses aquatic photosynthesis and is aesthetically unacceptable, driving adoption of advanced oxidation, ozonation, and membrane filtration treatment technologies to meet increasingly strict colour discharge limits in textile industrial zones.