Biomass charcoal soil heavy metal repairing agent and application method thereof

The invention provides a biomass charcoal soil heavy metal repairing agent as well as a preparation method and an application thereof. The biomass charcoal soil heavy metal repairing agent consists of, by the weight percentage, 10 parts of a heavy metal curing agent and 1-10 parts of a soil conditioner; the heavy metal curing agent is mesoporous biomass charcoal modified by graphene oxide; the soil conditioner is one or more of medical stone, lime, sawdust, chitosan, silicate clay, expanded vermiculite powder and organic fertilizers; the biomass charcoal soil heavy metal repairing agent is uniformly applied to contaminated soil, ploughing is conducted, the contaminated soil is uniformly mixed, stacked and aged for 10-20 d, and then the repairing process can be completed. The soil heavy metal repairing agent is convenient to use, rapid in repairing, remarkable in heavy metal removing effect and good in repairing effect. 本发明提供一种生物质炭土壤重金属修复剂及其制备方法与应用，所述生物质炭土壤重金属修复剂按重量百分比计，由10份重金属固化剂和1-10份的土壤改良剂组成，所述重金属固化剂为氧化石墨烯修