Wastewater Recovery from a Textile Bleach and Dye Operation, Bench Scale Evaluation. Water Treatment Technolgy Report, No. 39

摘要

This 2 MGD facility produces high quality product water from filtered wastewater, which is used by a local textile bleach and dye plant. The textile plant requires water with low TDS and carbon concentrations. The bleach and dye operations at the textile plant increase the concentrations of color and TDS. Originally the textile plant used only reactive dyes, however, recently indigo dyes have also been included in some of the textile processes. The resulting wastewater is returned to the WWTP and contains high concentrations of a mixture of dyes and a TDS concentration of approximately 2500. this water is treated by extended aeration, clarification, and chlorination being dechlorinated and discharged into a tidal zone. The treated industrial wastewater is blended with the RO concentrate and the treated domestic wastewater effluent before discharge. This report determines characterization of wastewater from the textile plant and bench-scale evaluations of treatment options and makes recommendations for candidate processes to be evaluated during pilot scale.