Method for reducing heavy metal pollution diffusion of soil around mine

A heavy metal and soil technology, applied in the restoration of polluted soil, land preparation methods, agricultural machinery and tools, etc., can solve the problems of lack of natural vegetation growth, single plant species, poor ecological stability, etc., to achieve the control of heavy metal diffusion and economic cost Low, reduce the effect of migration

Inactive Publication Date: 2020-09-29
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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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

Method used

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  • Method for reducing heavy metal pollution diffusion of soil around mine
  • Method for reducing heavy metal pollution diffusion of soil around mine
  • Method for reducing heavy metal pollution diffusion of soil around mine

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Embodiment 1

[0035] Around the tailings dam of the lead-zinc mine in Sidecun, Yangshuo, Guangxi, a gentle slope zone between the tailings dam and the surrounding farmland is selected, with a slope of less than 10°. The soil layer in this area is thin and the rainfall is abundant. The tailings dam pollutes the ecology. Destruction, sparse vegetation coverage, and surface runoff. The heavy metal-resistant trees, shrubs and herbaceous plants were planted in the gentle slope zone through the field test model, and the heavy metal content absorbed by the roots and shoots of different plants and the reduction rate of soil water-soluble heavy metals before and after the ecological isolation zone were measured.

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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, ...

Claims

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Application Information

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IPC IPC(8): B09C1/10A01B79/02
CPCA01B79/02B09C1/105B09C2101/00
Inventor 杨俊兴郭俊娒杨军陈同斌
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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