铀矿山尾矿坝周边土壤污染评价及修复探讨

Discussion onPollution and Repair of Soils Around Tailings Dam of Uranium Mine

指出了矿山酸性废水含有高浓度重金属元素和放射性核素,排入周边土壤后会诱发土壤酸化和毒化等,所生产的农作物极有可能存在较高浓度的放射性核素和重金属元素积累,人体食用了这些农产品,最终将危害人体健康。测定了土壤的理化性质(pH值、Eh、Ec)及土壤中重金属,结果发现:土壤中重金属镉的含量严重超标,就土壤镉污染提出了一些修复措施,为治理、修复矿区周边土壤重金属镉污染提供一定的参考。

Acidic mining waste water, which has low pH value （general 2-4） and has high concentration of heavy metals and radionuclides, will cause the acidification and poison of soil when flowing into the surrounding soil. Then the production of crops is likely to accumulaterelatively high concentration of radionuclides and heavy metals, which will jeopardize the health of human body after eating these crops. After the determination of physical and chemical properties （pH, Eh, Ec） and heavy mental content, the results suggest that the content of Cd exceeds the standard- badly. Therefore, the article puts forward some repair measures of Cd pollution, which provide some referencesfor the control and repair Cd pollution insoil around the mining area.