Wastewater Recycle and Reuse Potential for Indirect Discharge Textile Finishing Mills. Volume 1. Technical Report

摘要

The report gives detailed information on a variety of wastewater recycle/reuse technologies that allow textile finishing mills to reduce the volume of waste-water and the amount of pollutants discharged to publicly owned treatment works. (NOTE: Dyebath reconstitution is described separately.) Many of these technologies have been demonstrated full-scale, but only a few have become widely applied in the textile industry. Technical and economic factors affect the application of most of these technologies at a given mill; thus, each must be considered under its own mill-specific conditions. Included for each described technology are a description, its environmental benefits, recycle and treatment system schematics, design criteria, technical factors that limit or enhance its application, capital and yearly costs, factors that affect its economic feasibility, its current applications, and references for further information. The information in this report is based on a survey of the literature, discussions with equipment/process vendors and researchers, and engineering studies at six textile finishing mills. The six mills provide a good cross-section of the variety of products, fibers, manufacturing processes, and potential recycle/reuse technologies encountered in textile finishing. Volume 2 of the report consists of the six mill engineering reports.