Full-Scale Demonstration of Textile Dye Wastewater Reuse

摘要

The paper gives results of an examination of technologies by which textile processing wastewaters could be recycled or reused, thereby reducing the amounts discharged. One of these technologies, dyebath reconstitution and reuse, was investigated in detail: it was found to be environmentally beneficial and cost-effective. Instead of the normal procedure of discharging the exhausted dyebath, this technology involves a process modification wherein the dyebath is reconstituted by adding appropriate amounts of makeup dyes and auxiliary chemicals. The reconstituted bath can then be reused for dyeing a second batch of textile goods, resulting in significant auxiliary chemical, energy, and water savings.