Improvement agent for red mud in-situ soil and application method thereof

Abstract

The invention provides an improvement agent for red mud in-situ soil and an application method thereof, the improvement agent comprises a main agent and an auxiliary agent, the main agent comprises inorganic acid waste and organic acid waste; the auxiliary agent comprises an organic fertilizer, an inorganic fertilizer and a microbial agent; the microbial agent comprises halomonas, Nesterensis and bacillus. The application method comprises the following steps: S1, preparing a premix; step S2, preparing a neutralized substance; s3, forming a red mud improvement layer; and S4, activating and diluting the microbial agent, and spraying the microbial agent on the red mud improvement layer. The red mud environment in which plants can normally grow and develop is established, positive evolution of the red mud towards the soil direction is promoted, and thus ecological restoration and ecological reconstruction of the red mud storage yard are achieved, and the problem that the red mud storage yard returns alkali and salt to hinder vegetation growth is solved.

Description

Technical field [0001] The invention relates to the technical field of red mud remediation, and in particular to an improving agent for red mud in-situ soil and its application method. Background technique [0002] For every ton of alumina produced by global alumina manufacturers, more than one ton of red mud tailings is produced as a by-product, most of which can only be landfilled or stored, posing an important threat to soil, water resources and the ecological environment. Red mud is a red powdery mud-like waste discharged from the alumina industry. It is a strongly alkaline harmful residue with a high moisture content and a bulk density of 700 to 1000kg / m. 3 , specific surface area 0.5~0.8m 2 / g. Currently, most of the country and abroad use dam-building wet methods to store red mud. With the increase in alumina production, the red mud yard has expanded and expanded, forming a large number of exposed areas, which not only destroys the ecological environment, but also c...

AI Technical Summary

Problems solved by technology

However, none of these repair methods can fundamentally solve the problem of the return of alkali and salt in red mud stockpiles hindering the growth of vegetation, and the repair cost is too high

Therefore, there is an urgent need for an improvement agent for red mud in-situ soil and its application method to solve the problem of returning alkali and returning salt in red mud yards to hinder the growth of vegetation in the prior art

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