Study on photocatalytic treatment of printing and dyeing wastewater with modified TiO2

In recent years, TiO₂ photocatalytic technology has been effectively applied in the treatment of printing and dyeing wastewater because of its advantages of green, high efficiency and reusability. In this paper, according to the characteristics of difficult treatment of printing and dyeing wastewater and the application defects of TiO₂, the methods of improving the treatment efficiency of printing and dyeing wastewater by TiO₂ modification, doping and co-doping were summarized, in order to provide reference for the application of modified TiO₂ in photo catalytic treatment of printing and dyeing wastewater