Heavy metal soil remediation agent and preparation method thereof

The invention discloses a heavy metal soil remediation agent and a preparation method thereof. The heavy metal soil remediation agent is composed of the following formula ingredients in parts by mass: 10-20 parts of activated carbon fibers, 5-7 parts of a phosphate compound, 4-6 parts of polyamide fibers, 5-6 parts of sodium bismuthate, 14-16 parts of aminopolycanboxylic acid, 16-18 parts of a bio-emulsifier, 6-10 parts of sodium lignin sulfonate, 6-8 parts of organic acid, 2-4 parts of organic matters and 3-5 parts of sodium sulfide. The heavy metal soil remediation agent disclosed by the invention is reasonable in formula, the preparation method is simple, multiple heavy metal pollutants in soil can be effectively reduced, the soil air permeability can be improved, the growth environment of crops can be improved, and the heavy metal soil remediation agent is environment-friendly and green. 本发明公开了种重金属土壤修复剂及其制备方法，由以下质量份数配方成分组成：活性炭纤维10-20份、磷酸盐类化合物5-7份、聚酰胺纤维4-6份、铋酸钠5-6份、氨基多羧基酸14-16份、生物乳化剂16-18份、木质素磺酸钠6-10份、有机酸6