高盐高COD废水协同分离技术优化及纺织行业工程应用实践

Optimization of Co-Separation Technology for High-Salinity and High-COD Wastewater and Its Engineering Application in the Textile Industry

摘要

纺织印染行业的排放废水含有大量高盐高COD，传统的分离工艺分离效率低、盐资源化程度不高、膜污染严重，不能满足行业减排和资源化利用的要求。经过对预处理、膜浓缩和蒸发结晶三者协同作用进行优化，采用关键单元参数调节以及药剂配伍改善的方式，达到盐分和有机物高效分离的目的，提高盐晶纯度和COD去除效果，结合纺织行业的工程应用需求完成系统的集成设计，解决传统工艺在实际运行中出现的效能问题，给纺织行业的高盐高COD废水处理提供技术支持和工程参考。

Abstract

The wastewater discharged from the textile printing and dyeing industry contains a large amount of high salt and high COD. Traditional separation processes have low separation efficiency, low degree of salt resource utilization, and serious membrane pollution, which cannot meet the requirements of industry emission reduction and resource utilization. After optimizing the synergistic effects of pretreatment, membrane concentration, and evaporation crystallization, key unit parameter adjustment and improved drug compatibility were adopted to achieve efficient separation of salt and organic matter, improve salt crystal purity and COD removal efficiency. Combined with the engineering application requirements of the textile industry, the integrated design of the system was completed to solve the efficiency problems of traditional processes in practical operation, providing technical support and engineering reference for the treatment of high salt and high COD wastewater in the textile industry.

关键词

高盐高COD废水 / 协同分离 / 膜浓缩 / 蒸发结晶 / 纺织印染 / 工程应用

Key words

high salt and high COD wastewater / collaborative separation / membrane concentration / evaporative crystallization / textile printing and dyeing / engineering application

参考文献

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