光催化技术在印染废水处理领域的应用研究进展OA

China has a large number of large-scale textile printing and dyeing enterprises.With the devel-opment of such enterprises,the problem of wastewater treatment in the process of textile printing and dyeing has become increasingly prominent.Textile printing and dyeing wastewater mainly contains dirt,grease,salt on textile fibers and various slurries,dyes,surfactants,auxilaries,acids and bases added during processing.Several main treatment methods of printing and dyeing wastewater were summarized,and the recent re-search progress in photocatalytic degradation of printing and dyeing wastewater at home and abroad was em-phasized.Photocatalytic degradation technology can catalyze and accelerate toxic and harmful organic dyes in the presence of light,and degrade heavy metal ions into non-toxic and harmless inorganic small molecules and low-cost metal ions.It has the advantages of environmental friendliness,green pollution,energy saving and high efficiency,and provides a technical idea with great application potential for printing and dyeing waste-water treatment industry.