偶氮类染料废水处理技术的研究进展

摘要

染料的使用伴随着大量有机废水的产生，不但对环境保护带来巨大的威胁还危及人类的身体健康。在印染工艺中，偶氮类染料是应用最广泛的一类合成染料。综述了国内外偶氮类染料废水处理技术的研究现状，对物理法、化学法、生物法在偶氮类染料废水处理中的应用进行了简要介绍，并阐述了各种方法的作用机理。根据绿色化学的要求对现有处理技术进行改进，以提高偶氮类染料废水的处理效率使其达标排放。%A lot of organic waste water is produced in use of dyes,which not only brings great threat to environmental protection, but also endangers the health of human. In printing and dying process, azo dye is a kind of synthetic dye which is most widely used. In this paper,research status of the treatment technology of azo dying wastewater at home and abroad was reviewed. Physical methods, chemical methods and biological methods of azo dyes wastewater treatment were discussed. The mechanisms of various methods were expounded. It's pointed out that the existing treatment technologies should be improved to enhance the treatment efficiency according to the requirements of green chemistry.