2007•China Water & WastewaterRequires access

Modification of Printing and Dyeing Wastewater Treatment Process in Dyeing and Textile Factory

Dai Xue-min

Abstract

By making analysis on the problems existing in the previous printing and dyeing wastewater treatment system and wastewater quality in a dyeing and textile factory,the modified process of anaerobic fermentation/facultative hydrolytic acidification/biological contact oxidation/coagulation and sedimentation was put forward by making full advantage of the existing facilities.The result shows that the removal rates of COD,BOD5,SS and color in the modified wastewater treatment system are 90.4%,91.4%,87.5% and 87.9% respectively,and the effluent quality reaches the Ⅰ-class criteria specified in the Discharge Standard of Water Pollutants for Dyeing and Finishing of Textile Industry(GB 4287-92).

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Key concepts: Dyeing, Effluent, Wastewater, Textile, Textile industry, Pulp and paper industry, Waste management, Factory (object-oriented programming)