Method for repairing petroleum hydrocarbon contaminated soil through non-free radical oxidation of traditional Chinese medicine residues

According to the method for repairing the petroleum hydrocarbon contaminated soil through non-free radical oxidation of the traditional Chinese medicine residues, the solid waste traditional Chinese medicine residues serve as a precursor, and the solid waste traditional Chinese medicine residues are wide in source, low in cost and beneficial to practical engineering utilization; after persulfate is activated through the traditional Chinese medicine residue biochar, a better oxidation effect is achieved, the efficiency of repairing the petroleum hydrocarbon contaminated soil through non-free radical oxidation is remarkably improved, the pH buffering capacity of the petroleum hydrocarbon contaminated soil can be improved through the traditional Chinese medicine residue biochar, the application range of a persulfate oxidizing agent is widened, and secondary pollution cannot be caused; the persulfate is mainly used for degrading petroleum hydrocarbon pollutants through a non-free radical mechanism, is not easily