A method for ecological restoration of red mud stockpile

Abstract

The present invention provides an ecological regreening method for red mud stockpile. A plurality of mutually independent ecological anchor points are set on the surface of red mud stockpile. The transitional deduction circle, the core ecological circle forms a stable high-level ecological community through artificial intervention, realizes the soilization of red mud in the core ecological circle by means of biological self-succession, and the self-seeding gleization circle forms a lower level of the core ecological circle through artificial intervention. The secondary imitation ecological community is to facilitate the spontaneous diffusion of the ecological community in the core ecological circle to the periphery. The transitional deduction circle only improves the soil matrix, and the acidic organic waste residue is added to reduce the alkalinity of the red mud and increase the organic matter content. The present invention realizes the ecological regreening of the red mud stockyard by setting the ecological anchor point with self-proliferation and wildness in the local area, which greatly saves the cost input and has a good regreening effect.

Description

technical field [0001] The invention belongs to the technical field of waste slag treatment in the aluminum industry, and in particular relates to an ecological regreening method for a red mud stockyard. Background technique [0002] Red mud is the polluting waste slag discharged during the extraction of alumina in the aluminum industry. At present, the treatment of red mud mainly adopts the method of centralized stacking on the seabed or on land. The dust generated by the red mud stockpiles will affect the health of the surrounding residents, and will also seep into the ground and pollute the groundwater. In order to solve the above problems, the industry is now advocating the overall regreening of red mud storage yards to achieve ecological restoration. [0003] Due to the high salinity and high alkalinity of the land in the red mud dump, this seriously restricts the normal growth of plants, making it difficult for the red mud dump to realize ecological restoration indepe...

AI Technical Summary

Problems solved by technology

[0007] The advantage of this method is that the cost is relatively low, and the matrix improvement is carried out on the red mud itself, and there are almost no environmental problems left over; the disadvantage is that because there is no ready-made original soil, it is necessary to observe the growth of the plants for a long time and carry out monitoring of the unsurviving plants. Replanting, and finally, when the soil of red mud reaches a certain level, transplant other types of plants. The operation time is long, the operation area is large, and the technical requirements are also high.

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