Isolation process repairing method for ecological repairing of red mud stock yard

A technology of ecological restoration and restoration method, which is applied in the field of ecological restoration of red mud storage yards, can solve the problems that cannot fundamentally solve the problems of red mud storage yards returning to alkali and salt, vegetation growth, high cost, and difficulty in affording funds. Ensure the survival basis and growth effect, and solve the effect of ecological restoration

Inactive Publication Date: 2020-05-08
芷兰生态环境建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the restoration of red mud stockyards is mainly reflected in the improvement of the properties of red mud, soil-covering greening construction, etc., but none of them can fundamentally solve the proble

Method used

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  • Isolation process repairing method for ecological repairing of red mud stock yard
  • Isolation process repairing method for ecological repairing of red mud stock yard

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0025] Example 1

[0026] An ecological restoration and barrier process restoration method for a red mud yard, characterized in that it comprises the following steps:

[0027] S1: The red mud in the red mud yard is excavated and loosened by an excavator, and the excavation depth is 30-50cm. After leveling, a loose layer with a drainage slope on the surface is formed, which can be drained to the outside boundary through the drainage slope;

[0028] S2: Apply one or more of acid substances such as desulfurized gypsum, phosphogypsum, and furfural residues on the surface of the red mud, spread the thickness of 5-10cm according to the volume ratio, and then plough and mix evenly to form a neutralization layer;

[0029] S3: Lay 30-50mm graded gravel on the surface of the neutralization layer. The laying thickness is greater than 50mm and less than 100mm; the capillary isolation layer is formed; then the HDPE film with a thickness of 1mm is laid;

[0030] S4: The substrate required...

Example Embodiment

[0033] Example 2

[0034] An ecological restoration and barrier process restoration method for a red mud yard, characterized in that it comprises the following steps:

[0035] S1: The red mud in the red mud yard is excavated and loosened by an excavator. The excavation depth is 30-50 cm. After leveling, the surface forms a 2% slope, and drains and excavates to the outer boundary to form a loose layer;

[0036] S2: Apply one or more of acidic substances such as desulfurized gypsum, phosphogypsum, and furfural slag on the surface of the red mud, spread with a thickness of 5-10 cm according to the volume ratio, and then plough and mix evenly to form a neutralized layer;

[0037] S3: Lay geotextile-HDPE film on the surface of the neutralization layer, with a thickness of 1mm, completely covering the neutralization layer to form a capillary isolation layer;

[0038] S4: The substrate required for plant growth is laid on the surface of the HDPE film. The components include quick-ac...

Example Embodiment

[0041] Example 3

[0042] An ecological restoration and barrier process restoration method for a red mud yard, characterized in that it comprises the following steps:

[0043] S1: The red mud in the red mud yard is excavated and loosened by an excavator. The excavation depth is 30-50 cm. After leveling, the surface forms a 2% slope, and drains and excavates to the outer boundary to form a loose layer;

[0044] S2: Apply acidic substances - one or more of organic acids such as citric acid or EDTA to the red mud surface, dissolve in water, configure to the maximum concentration, and use 10-15L of solution per square red mud surface to form a neutralization layer ;

[0045] S3: On the surface of the neutralization layer, lay geotechnical material - geotechnical mat with a thickness of 100mm, completely covering the neutralization layer to form a capillary isolation layer; then lay a HDPE film with a thickness of 1mm;

[0046] S4: The substrate required for plant growth is laid ...

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Abstract

The invention discloses an isolation process repairing method for ecological repairing of a red mud stock yard. The method comprises the following steps: turning, digging and flattening red mud at thered mud stock yard so as to form a loosening layer, applying an acid substance to the surface of the red mud, neutralizing alkalinity of the red mud so as to form a neutral layer, laying graded broken stone or a geotechnique material on the surface of the neutral layer so as to form a capillary tube isolation layer, laying a medium essential for plants to grow on the surface of the capillary tubeisolation layer so as to form a medium layer, and planting plants on the medium layer so as to form a vegetational community layer. By adopting the isolation process repairing method for ecological repairing of the red mud stock yard, the effective capillary tube isolation layer is constructed on the surface of the red mud, so that the influence of high salt and alkalinity of the red mud upon plants planted on the surface of the red mud can be fundamentally avoided, living bases and growth effects of the planted plants can be ensured, and furthermore, problems of ecological repairing of the red mud stock yard can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of ecological restoration of a red mud yard, in particular to a restoration method for an ecological restoration barrier process of a red mud yard. Background technique [0002] The treatment of red mud has always been a worldwide problem that has plagued the global academic circles, government circles and alumina production enterprises. According to statistics, for every ton of alumina produced by global alumina production enterprises, more than one ton of red mud tailings are produced as by-products, most of which can only be landfilled or stockpiled, posing an important threat to soil, water resources and ecological environment. Red mud is a red muddy waste discharged from the alumina industry. It is a strong alkaline and harmful residue with a high moisture content and a bulk density of 700 to 1000kg / m2. 3 , with a specific surface area of ​​0.5 to 0.8m 2 / g. At present, most of the red mud storage at...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 王志强姚军向华浩
Owner 芷兰生态环境建设有限公司
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