Efficient heavy metal contaminated soil remediation agent and in-situ remediation method

• Main Authors: ZHAI CUIHONG, WANG GUOFENG, CHENG SHAOJUAN, JIANG WEI, ZHU FANGXU, CHEN ZHIPING
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: ADHESIVES; CHEMISTRY; DISPOSAL OF SOLID WASTE; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; POLISHES; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

The invention belongs to the technical field of soil remediation, and particularly relates to an efficient heavy metal contaminated soil remediation agent and an in-situ remediation method. The soil remediation agent comprises a component A and a component B, the component A comprises 20-24 parts by weight of ferrous sulfate, 70-75 parts by weight of cement and 1-8 parts by weight of an auxiliary agent, and the component B comprises 30-40 parts by weight of red mud, 50-60 parts by weight of a carbon-based fertilizer, 1-4 parts by weight of microbial compound bacteria, 5-8 parts by weight of a phosphate fertilizer and 5-10 parts by weight of iron phosphate nanoparticles. The soil remediation agent is composed of two parts, the component A is cured in situ to form a protective barrier, and heavy metal can be effectively prevented from migrating to an underground water layer; heavy metals in the soil are adsorbed by using the component B, so that the migration of heavy metal pollutants is further prevented; fina