Abstract
The textile dyeing operations consumes large amounts of process water and thermal energy. The wastewater resulting from these operations contains various types of contaminants of organic and inorganic origin. This wastewater has an above average temperature. The possibility of renovating and recycling a major portion of this wastewater would reduce the water and energy consumption by these dyeing operations. This paper presents pilot plant test results of using Zr(IV)-PAA dynamic RO membrane modules for treating dyeing wastewater. Using these results, a mathematical model was presented to evaluate the design parameters and economic feasibility of a 1000 m 3/day plant for treating and recycling dyeing wastewater. The economic results show that a net profit could be obtained by recycling product water.
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