电解锰渣库周边土壤重金属污染调查与防控策略探讨

Investigation and Discussion of Prevention and Control Strategy of Heavy Metal Pollution in Soilaround Electrolytic Manganese Slag Reservoir

本研究通过对铜仁市周边8家电解锰企业的锰渣库周边土壤进行采样,并对土壤中Mn、Zn、Cr、Cu、Pb等重金属进行检测。结果显示,渣库周边土壤中Mn、Cu、Cr污染最为严重,平均值分别为贵州省土壤重金属背景值的56.7、1.5、1.26倍,土壤中的Zn、Pb仅在个别企业渣库周边稍高于背景值。对锰渣库周边土壤重金属污染防治应以高效缓解锰渣堆积量的方法处理,实现电解锰渣的资源化利用、土壤重金属修复技术,以此减轻对环境的污染压力。

Soil samples were collected from the manganese slag reservoir of 8 manganese decommissioning enterprises in tongren,heavy metals such as Mn,Zn,Cr,Cu and Pb in soils were detected.The result showed that the most serious three heavy metal pollution element in soil around the slag reservoir was in order of Mn,Cu and Cr.The mean values was respectively 56.7,1.5 and 1.26 times of the background values of soil heavy metals in Guizhou province,the elements of Zn and Pb in soil were only slightly higher than the background value around individual enterprise slag repository,the prevention and control of heavy metal pollution in the soil around the manganese slag reservoir should adopt the measures to reduce the accumulation of manganese slag effectively,realizing the resource utilization of electrolytic manganese slag,implementing heavy metal remediation technology of soil,so as to reduce the pressure of environmental pollution.