Lead-polluted soil stabilization remediation agent and remediation method

The invention discloses a lead-polluted soil stabilization restoration agent which comprises monopotassium phosphate and hydroxyapatite in the weight ratio of (4-2): 1, and further discloses a lead-polluted soil stabilization restoration method which comprises the step that 2%-5% by weight of the restoration agent is added into pretreated lead-polluted soil, and supplementing water to keep 40% of the water content of the soil, and stably maintaining the lead-polluted soil for 3-7 days. Through interaction of the monopotassium phosphate and the hydroxyapatite, the lead leaching concentration in the soil can be greatly reduced, after continuous maintenance is conducted for a period of time, the remediation reaction of lead in the soil can reach a stable state, and the purpose of conducting stable remediation on the lead-contaminated soil is achieved. 本专利申请公开了铅污染土壤稳定化修复药剂，包括磷酸二氢钾和羟基磷灰石，磷酸二氢钾和羟基磷灰石的重量比为4～2:1，还公开了铅污染土壤稳定化修复方法，包括在预处理后的铅污染土壤中加入重量比2％～5％的修复药剂，补水保持土壤40％的含水率，对铅污染土壤稳定化养护3～7天。本发明通过磷酸二氢钾和羟基磷灰石的交互作用，能大大降低土壤