Development of TiO_2 photocatalytic oxidation technology in printing and dyeing wastewater treatment

The basic characteristics and treatment methods of printing and dyeing wastewater were introduced. The mechanism of TiO2 photocatalytic oxidation technology and influencing factors(the structure of the TiO2, pH, concentration of TiO2, light source and light intensity, etc.) in printing and dyeing wastewater treatment were expounded. The research progress and the main defects of TiO2 photocatalytic oxidation technology in printing and dyeing wastewater treatment were summarized. Finally, the application prospect of TiO2 photocatalytic oxidation technology was discussed.