Microbial purification and remediation device and method for petroleum hydrocarbon contaminated soil

The invention relates to a microbial purification and remediation device and method for petroleum hydrocarbon contaminated soil, the microbial purification and remediation device comprises a shell frame, the middle of the shell frame is of a hollow structure, a material mixing cavity is formed in the shell frame, and a feeding port is formed in the upper end of the shell frame; the soil loosening unit is installed on the left side of the shell frame and used for loosening soil polluted by petroleum hydrocarbon; the feeding unit is mounted in the middle of the feeding port in the upper end of the interior of the shell frame, and the feeding unit is used for conveying nutrient substances required by microorganism growth into the shell frame; and the purification and remediation unit is installed in the material mixing cavity in the shell frame, and the purification and remediation unit is used for evenly mixing the nutrition provided by the feeding unit with the soil polluted by the petroleum hydrocarbon. Soil