Modification of BiOX by Sulfur Doping and Bismuth Deposition and Its Treatment of Drilling Fluid Polymers and Heavy Metals

To solve the problems of secondary pollution and high cost caused by the traditional treatment of drilling fluid system. In this paper, a novel photocatalytic material S-Bi/BiOBr
0.5
Cl
0.5
was synthesized by hydrothermal method. The chemical states of elements on the surface were analyzed by x-ray photoelectron spectroscopy (XPS). The morphology and structure of the samples were characterized by SEM and TEM. Through the RhB degradation experiment, it was shown that the material has good photocatalytic performance. The COD removal rate of the several common polymers in drilling fluid were more than 69%; The reduction rate of heavy metal ions in drilling fluid(lead nitrate, mercury nitrate, potassium dichromate and chromium sulfate) were 12.6%, 38.1%, 88.25% and 92.25%, respectively.