摘要： 针对传统印染废水深度处理工艺复杂、冗长等特点，开发了一种多级臭氧气浮一体化装置（DOIF）。将臭氧与气浮分离相结合，同时引入第二级氧化单元，使臭氧得到最大程度的利用，在一个操作系统内实现了固液分离、脱色、降解有机物等多个环节。实验结果表明，该工艺对COD、色度、UV₂₅₄、TOC的去除率分别可达到25.5%、54.5%、37.5%、32.4%，也是再生水回用中膜分离的预处理环节。

关键词: 印染废水, 多级臭氧气浮, 臭氧氧化, 深度处理

Abstract: Since the characterizations of advanced treatment process of traditional dyeing wastewater are complicat-ed and lengthy,a kind of multi-level integrated device,dual-step ozone induced flotation(DOIF)process has been developed. Ozone has to be combined with flotation separation,and the second-level oxidation unit intro-duced,in order to make full use of ozone,achieving several links,including solid-fluid separation,decolorization and organic matter degradation in one operation system. The results show that by DOIF process the removing rates of COD,color,UV₂₅₄,and TOC can reach 25.5%,54.5%,37.5%,and 32.4% respectively. The process is also a pretreatment step for membrane separation in reclaimed water reuse.

Key words: dyeing wastewater, dual-step ozone induced flotation, ozonation, advanced treatment

中图分类号: 

• X791