Solidification and stabilization system for soil remediation

Abstract

The invention relates to a solidification and stabilization system for soil remediation. The solidification and stabilization system comprises a crushing system, a screening system, a soil solidification system, a maintenance system and a drying system which are sequentially arranged from front to back. The crushing system is used for crushing soil raw materials; a first conveying device is arranged between the crushing device and the screening device; the screening device is used for screening the crushed soil raw materials; a second conveying device is arranged between the screening system and the soil solidification system; the drying system is arranged on a conveying track of the second conveying device and used for drying small-particle raw materials; the soil solidifying system is used for adding a solidifying and stabilizing agent into the dried soil and uniformly mixing the solidifying and stabilizing agent and the dried soil; and a third conveying device is arranged between the soil solidification system and the maintenance system. The solidification and stabilization system has the advantages that the structural design is reasonable and compact, the occupied area can be effectively reduced, the whole system is safe and effective, and heavy metal contaminated soil can be continuously treated.

Description

technical field [0001] The invention relates to the technical field of soil restoration, in particular to a solidification and stabilization system for soil restoration. Background technique [0002] Solidification and stabilization technology refers to a method of combining heavy metal-contaminated soil with a specific binding agent, so that the heavy metals in the soil are fixed by the agent, making it in a stable state for a long time and reducing its mobility. This method is widely used in the rapid and controlled remediation of heavy metal-contaminated soils, and has significant advantages in the simultaneous treatment of multiple heavy metal-contaminated soils. [0003] Solidification stabilization technology is currently widely used in the remediation process of heavy metal contaminated soil in my country because of its simple operation process, good treatment effect, low price, and perfect technical theory. [0004] Factors affecting the effect of curing and stabili...

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Problems solved by technology

However, due to the shallow groundwater level in some polluted sites, the water content of the excavated soil is above 30%. If this type of soil is not dried, it will not only block the curing and stabilization system, but also reduce the curing efficiency of the curing agent.

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