Soil passivator for repairing lead-cadmium-arsenic combined pollution and preparation method and application thereof

• Main Authors: ZHAO FEIPING, GONG HANGYUAN, XIE YAN, YANG ZHIHUI, YANG WEICHUN
• Format: Patent
• Language: Chinese; English
• Published: 24.09.2021
• 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 provides a preparation method of a soil passivator for repairing lead-cadmium-arsenic combined pollution, which comprises the following steps of: S1, adding a ferric chloride solution into a calcium chloride solution to obtain a first mixed solution, and then adding a diammonium hydrog...