Ecological restoration method for strong acid tailings abandoned land

A technology of ecological restoration and abandoned land, applied in the direction of soil preparation methods, botany equipment and methods, fertilizers made from biological waste, etc., can solve problems such as hindering plant growth, high heavy metal content, and lack of nutrient elements, so as to reduce inventory pressure , reduce soil salinity, improve the effect of physical structure

Inactive Publication Date: 2017-11-17
厦门紫金矿冶技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the strong acidity, high content of heavy metals, and lack of nutrients in the tailings wasteland of

Method used

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  • Ecological restoration method for strong acid tailings abandoned land
  • Ecological restoration method for strong acid tailings abandoned land
  • Ecological restoration method for strong acid tailings abandoned land

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Embodiment Construction

[0026] Below in conjunction with embodiment, process effect of the present invention is further verified and elaborated, and protection scope of the present invention can not be limited with this, and the ecological restoration step that example adopts is as follows figure 1 shown.

[0027] In order to verify the feasibility of this patented method for repairing the wasteland of strong acid tailings, we carried out ecological restoration research on a copper mine dump, and explored an ecological restoration method suitable for the wasteland of strong acid tailings in the south.

[0028] The copper mine dump is composed of stripped topsoil, mined waste rock, and low-grade ore. The surface is hardly covered with any vegetation, with high heavy metal content and strong toxicity; poor structure and lack of nutrients; high surface temperature and soil water retention Poor capacity, serious soil erosion, specific soil parameters are shown in Table 1.

[0029] Table 1 Soil parameter...

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Abstract

The invention discloses an ecological restoration method for a strong acid tailings abandoned land. The method includes the steps that a site is leveled and cleaned and then covered with neutral slag from a metal mine environment-friendly treatment system; a compound fertilizer, an organic fertilizer and artificial soil are added to the covering layer so as to improve the fertility of the covering layer; resistant plants are screened and subjected to seedling raising; planting is conducted in stages through a grass-shrub-arbor combined repairing mode, grass seeds are sown first, arbor and shrub nutrient bag seedlings are planted after the grass seeds sprout, and then tending management is conducted. According to the method, the neutral slag creatively serves as borrowed soil to cover a test field, waste is used for treating waste, and the effects of stabilizing heavy metal ions and reducing acidic mine wastewater are achieved. By gradually building an artificial vegetation community, natural ecological succession is achieved, generation of the acidic mine wastewater is reduced or even isolated from the source, the neutralization cost is reduced, and a stable, safe and self-maintained vegetation ecological system is built on the strong acid tailings abandoned land.

Description

technical field [0001] The invention relates to ecological restoration technology, in particular to an ecological restoration method for waste land with strong acid tailings. Background technique [0002] Mining activities result in the discharge and storage of a large number of waste rock piles, which not only destroy and occupy a large amount of land resources, but also because most of the non-ferrous metal mine strata contain various types of metal sulfides, these metal sulfides are used in mining activities Oxidation in contact with air produces sulfuric acid, and the extremely acidic environment will intensify the dissolution and poisoning of heavy metal ions. Therefore, the soil of abandoned mine tailings has certain particularities, and its physical and chemical properties are quite different from normal soil, generally showing extreme acidic conditions (pH<3.0), heavy metal pollution (Cu, Pb, As, Cd, etc. Serious), lack of nutrients, poor soil water and fertilize...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G17/00A01B79/02C05G1/00
CPCA01B79/02A01G17/005A01G22/00C05D9/00C05G1/00C05F5/00C05F7/00C05F9/04
Inventor 范景彪熊明瑜钟均华甘永刚傅能武庄荣传季常青陈征贤钟俊王春
Owner 厦门紫金矿冶技术有限公司
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