Abstract
Abstract Exhausted dyebath effluents were collected from various textile mills. The samples were characterized by high levels of TOC, COD, colour and various heavy metals, most notably copper, zinc and chromium. Contacting these wastewater samples with polymeric adsorbent and ion-exchange resins indicated that very of ten excellent treatment results can be obtained. Removal of TOC by the adsorbent resins varied from about 15 to 65%, while COD removals ranged from 15 to 85%. The ion-exchange resins seldom provided significant TOC or COD removal. Zinc was not only present in the highest concentrations, but was also the most difficult to remove. Most importantly, for virtually every effluent there was at least one adsorbent or ion-exchange resin which was capable of attaining almost 100% decolourization.
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