A numerical method of analyzing the composition of colored wastewater from dyeing plant

Abstract Studies on the effectiveness of removing colored impurities from wastewater after dyeing process obtained five plants located in Lodz region Poland were performed as well a comparative spectrophotometric analysis before and treatment, visible range absorption 350–750 nm, attributed to dyes different groups with structures chromophoric systems. It was found that method calculating differences total areas under curves 280–800 nm cannot determine precisely color treatment. The using normalization procedure relevant spectra their partial proposed this work allows describe efficiency more indicates class synthetic used processes, giving opportunity selection appropriate procedures for removal or disposal. By II-derivative bands, amount components effects physicochemical biological treatment have been identified. This made it possible remaining wastewater.