Method for reducing heavy metal pollution diffusion of soil around mine

Abstract

The invention discloses a method for reducing heavy metal pollution diffusion of soil around a mine, and belongs to the technical field of heavy metal pollution treatment around the mine. The method is implemented in a gentle slope zone between a non-ferrous metal mining area or a tailing pond and a surrounding farmland. Arbor, shrub and herbaceous plants resistant to heavy metals are reasonably matched and planted to construct an ecological isolation belt based on natural vegetation, so migration of various heavy metals in the environment is reduced, ecological landscapes around a mining areacan be improved, soil is stabilized, heavy metal diffusion is controlled, the surrounding farmland soil environment quality and grain safety are guaranteed, and the threat of pollution to human health is reduced.

Description

technical field [0001] The invention relates to the technical field of heavy metal pollution treatment around mines, in particular to a method for reducing the diffusion of heavy metal pollution in soil around mines. Background technique [0002] With the rapid development of my country's economic construction, the demand for mineral resources is also increasing. While developing and utilizing mineral resources, it will inevitably bring about environmental pollution problems. The problem of heavy metal pollution in the surrounding soil of non-ferrous metal mining areas has become an environmental issue. One of the hot spots of pollution. [0003] The distribution of non-ferrous metal mines in my country is characterized by the fact that there are many in the south and few in the north, and there are many hilly areas in the south, with dense water systems, abundant rainfall, developed agriculture, and high multi-cropping index of farmland. The waste rocks produced by mining, ...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the heavy metal pollution control and ecological restoration in mining areas (tailings ponds) still adopt traditional methods and technical models, including pit refilling and leveling in mining areas, slope cutting and slope reduction, slope covering with soil, spraying and regreening with netting soil, Engineering measures such as plant roll-covering and greening, but most of the non-ferrous metal mines in my country are located in mountainous areas, with thin soil layers and few soil sources, which lead to the need for long-distance excavation of soil for mine backfilling and slope covering projects, and the cost is high. At the same time, ecological restoration projects such as alien soil spraying and regreening, ecological vegetation blankets, etc. lack natural vegetation growth, single plant species, poor ecological stability, and need to be updated year by year

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