Multi-biochar combined microbial composite material for petroleum-contaminated soil remediation and preparation method and application of multi-biochar combined microbial composite material

The invention discloses a multi-biochar combined microbial composite material for petroleum-contaminated soil remediation. The multi-biochar combined microbial composite material has a three-layer structure, wherein the lower layer is bagasse biochar attached with a fungal petroleum hydrocarbon degradation agent; the middle layer is traditional Chinese medicine residue biochar; and the upper layeris tea processing waste biochar to which a bacterial petroleum hydrocarbon degradation agent is attached. The multi-biochar combined microbial composite material is used for petroleum-contaminated soil remediation and has the advantages of short consumed time, good degradation efficiency, good heavy metal removal effect and the like. 本发明公开了一种用于石油污染土壤修复的多重生物炭联合微生物复合材料，其具有三层结构；下层为附着真菌石油烃降解剂的甘蔗渣生物炭，中层为中药残渣生物炭，上层为附着细菌石油烃降解剂的茶叶加工废弃物生物炭，该多重生物炭联合微生物复合材料用于石油污染土壤修复，具有耗时短、降解效率好、重金属去除效果好等优点。