Progress of Research on Pollution Remediation Technologies in Mining
Demand for mineral resources and excessive population growth have led to an upsurge in mining activities,which has exacerbated environmental pollution.Around the world,mine tailings and rejected wastes have occupied millions of hectares of land,which has led to the release of large quantities of potentially toxic elements(PTEs)into the surrounding soil and groundwater environments.Typically the levels of PTEs in soils surrounding mine sites are much higher than background values.Therefore,much attention has been paid to effective treatment methods to control the mobility and bioavailability of PTEs in mining soils.Currently,phytoremediation,physicoremediation,chemoremediation and bioremediation are commonly used in the soil remediation process of mining sites,and each of these techniques has its own advantages and disadvantages for the restoration of mining environments and the reconstruction of soil ecology.In this paper,we will review the recent progress in the application of these ecological restoration methods in mining areas.