▎ 摘　　要

NOVELTY - The processing method of printing and dyeing wastewater involves adding gold nanocluster-gold nanoparticles/titanium dioxide/graphene composite photocatalyst to printing and dyeing wastewater and then mixing, stirring the mixture and then adjusting pH value to 3-4, placing the mixture in a glass bottle and then reacting for 0.5-1 hour, stirring the mixture at room temperature and carrying out visible light catalytic degradation reaction for 0.5-3 hours. USE - The method is useful for processing of printing and dyeing wastewater, which is useful for degrading organic dye in printing and dyeing wastewater. ADVANTAGE - The method is capable of processing of printing and dyeing wastewater with high efficiency and excellent photocatalytic activity and catalytic degradation activity.