Preparation method and application of biochar-inorganic mineral composite material

The invention relates to the technical field of sewage treatment, in particular to a preparation method and application of a biochar-inorganic mineral composite material, and the preparation method comprises the following steps: S1, preparing biochar, grinding and sieving for later use; s2, mixing the charcoal prepared in the step S1 and inorganic minerals according to the mass ratio of 1: 2, and putting the mixture into an agate tank; then, the ball mill runs for 12 h at the rotating speed of 500 rpm, the rotating direction is changed once every 2 h, and a biochar-inorganic mineral composite material is obtained; s3, performing density grading on the obtained biochar/inorganic mineral mixture to remove free biochar and free inorganic minerals; according to the biochar-inorganic mineral composite material and the preparation method thereof, the application of the biochar-inorganic mineral composite material in adsorption of hydrophobic triphenyl phosphate (TPhP) and an oxidation product triphenylphosphine oxi