▎ 摘　　要

NOVELTY - Preparation of bismuth ferrite loaded graphene composite material comprises adding bismuth ferrite into modified graphene solution, ultrasonically treating to obtain suspension, adding alkali liquid in turbid liquid, continuously stirring and heating at lower than 37 degrees C. USE - The method is used for preparing bismuth ferrite loaded graphene composite material for waste gas and wastewater produced by blasting equipment (claimed). ADVANTAGE - The composite material has excellent photocatalytic degradation property and high degradation stability and bacteriostatic function, and reduces pH, chemical oxygen demand value and chroma of wastewater.