The coagulation/flocculation method was studied
as a wastewater treatment technique for the decolourization of residual dyebath effluents after dyeing cotton/polyamide blends using
reactive and acid dyes. It was discovered that a combination of aluminium sulphate and a cationic organic flocculant yields an
effective treatment for residual dyebath wastewaters since almost complete decolourization was achieved, TOC, COD, AOX, BOD
and the anionic surfactants were reduced and the biodegradability was increased.