Method and apparatus for enhanced photocatalytic oxidative decolorization of wastewater containing reactive anthraquinone dye

摘要

Disclosed are a method and apparatus for decolorization of reactive anthraquinone dye-containing wastewater using photocatalytic oxidation, which include inducing high-efficiency photocatalytic oxidation under a controlled salt concentration and pH of wastewater to perform effective decolorization of reactive anthraquinone dye-containing wastewater. The method for decolorization of reactive anthraquinone dye-containing wastewater using photocatalytic oxidation, includes: introducing a photocatalyst and salt into reactive anthraquinone dye-containing wastewater and adjusting pH of the wastewater to a level higher than neutral pH; and irradiating UV to the photocatalyst to carry out cleavage of the reactive anthraquinone dyes through photocatalytic oxidation, thereby accomplishing decolorization of wastewater.

主权项

1. A method for decolorization of reactive anthraquinone dye-containing wastewater using photocatalytic oxidation, comprising:
introducing a photocatalyst and salt into reactive anthraquinone dye-containing wastewater wherein the salt is at least one selected from a group consisting of NaCl, Na2SO4, KNO3, CuSO4, NH4Cl, CH3COONa and combinations thereof, and the wastewater is maintained at a salt concentration of 50-100 g/L; and irradiating UV to the photocatalyst to carry out cleavage of the reactive anthraquinone dyes through photocatalytic oxidation, thereby accomplishing decolorization of wastewater.