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  • Title: A membrane-based co-treatment strategy for the recovery of print- and beck-dyeing textile effluents.
    Author: Capar G, Yilmaz L, Yetis U.
    Journal: J Hazard Mater; 2008 Mar 21; 152(1):316-23. PubMed ID: 17689862.
    Abstract:
    This paper describes the final part of a study on the recovery of print- and beck-dyeing wastewaters of the carpet manufacturing industry by membrane processes. These wastewaters had been previously treated separately where the print dyeing wastewaters were recovered by chemical precipitation followed by nanofiltration (NF) and beck-dyeing wastewaters were subjected to microfiltration (MF) and pH neutralization prior to NF. In this study, a co-treatment scheme after separate pre-treatment stages was adopted to simplify the overall process. The effect of mixing ratio on membrane fouling was also investigated. The co-treatment strategy was found advantageous since the number of NF units was minimized and the pH neutralization step in separate treatment of beck-dyeing wastewaters was eliminated, providing a reduction of chemical usage.
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