Method for synergistically remediating high-ring polycyclic aromatic hydrocarbon contaminated soil by using biosurfactant

The invention discloses a method for synergistically remediating high-ring polycyclic aromatic hydrocarbon contaminated soil by utilizing a biosurfactant, and belongs to the technical field of soil remediation. The method comprises the following steps: (1) constructing a contaminated soil remediation area; (2) adding a soil loosening agent into the contaminated soil, and uniformly mixing the substances; (3) adding a biosurfactant into the contaminated soil, and uniformly mixing the substances; (4) adding a carbon source and nitrogen and phosphorus source substances required by microorganisms, and uniformly mixing the substances; (5) adding a high-efficiency degradation microbial liquid, and uniformly mixing the substances; and (6) conveying the treated soil to a remediation area, and performing maintaining until the contaminated soil reaches the standard. The method has the advantages that solubilization of the high-ring PAHs can be promoted by adding the biosurfactant, a surfactant can be synthesized by the