화학공학소재연구정보센터
Separation and Purification Technology, Vol.49, No.1, 76-83, 2006
Water recycling from mixed chromic acid waste effluents by membrane technology
Approaching zero discharge waste on site requires economical treatment technologies for the plating industry, recovering high quality rinse water for reuse. The combination of membranes and evaporation could be an efficient way to downsize the cost and the energy intensive evaporation equipment. In this work a combination of membrane processes is evaluated for efficient reduction of the waste water volume before evaporation. A stable process is developed showing that pre-concentration by 51% is possible. Chemical stable membranes are evaluated and optimum process parameters are determined. (c) 2005 Elsevier B.V. All rights reserved.