砷、镉、铅复合污染场地修复实例研究

通过对该项目的研究,分析重金属污染场地修复工程的全流程。分析固化稳定化修复砷、镉、铅复合污染土壤的工程实例。确认固化稳定化修复重金属污染土壤的原理是通过固化稳定化药剂与重金属进行物理化学反应生产难溶物质固定在土壤中防止其浸出,降低其危害,但并没有完全消除危害,需配合阻隔填埋、长期监测和场地管控措施综合使用。同时,对不同固化稳定化药剂选择,确认一种商品化的药剂,对此项目的长期研究可以评估此药剂的长期效果,为类似其他项目的选用提供相应工程技术和药剂固化效果参考。

Through the study of this project,the whole process of heavy metal contaminated site remediation project is analyzed.An engineering example of solidification and stabilization for remediation of arsenic,cadmium and lead contaminated soil is analyzed.It is confirmed that the principle of curing and stabilizing remediation of heavy metal contaminated soil is that the refractory substances are fixed in the soil to prevent their leaching through physical and chemical reactions between solidified stabilizers and heavy metals,but the harm is not completely eliminated.It should be used comprehensively with barrier landfill,long-term monitoring and site control measures.At the same time,for the selection of different curing and stabilizing agents,a commercial agent is confirmed.The long-term study of this project can evaluate the long-term effect of this agent and provide reference for the selection of similar projects.