A soil remediation system and method based on combined technology

Abstract

The invention discloses a soil remediation system based on a combined technology. The soil remediation system comprises a soil source conveying unit, a soil source crushing unit, an iron material adsorption unit, a soil source screening unit, a stone conveying unit, a thermal volatilization unit, a chemical cleaning precipitation unit, a dehydration unit, an air drying unit, a faeces conveying unit, a sterilization and deodorization unit, a soil and fertilizer mixing unit and a clean soil source conveying unit. According to the soil remediation system, the combined technology of physical remediation, chemical remediation and fertilizer adding treatment is adopted, and the problems that soil desertification is severe and nutrients are insufficient are further solved under the condition that soil is sufficiently remediated; a cleaning liquid recycling module has a stirring function as well, so that cost is reduced, and equipment space is decreased; disturbance of waterflow in a filter screen zone is guaranteed during the recycling process of the cleaning liquid recycling module, and the problem that a filter screen is liable to block is solved; and disturbance for bottom sediment is effectively inhibited through the cleaning liquid recycling module, and a recycled cleaning liquid does not contain soil impurities.

Description

technical field [0001] The invention relates to the field of environmental protection machinery, in particular to a soil remediation system and method based on a combined process. Background technique [0002] The overall situation of China's soil environment is not optimistic. The national soil pollution rate is as high as 16.1%. While the soil environment problems of industrial and mining abandoned land are prominent, the soil environment quality of cultivated land is even more worrying. However, existing soil remediation equipment has repaired soil "sand" "The pollution is serious, and the nutrients are also filtered out. In addition, the recovery of the soil cleaning solution also has the problem of too much residual soil residue, which is easy to block the pipeline. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a soil remediation system and method based on a combined ...

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Problems solved by technology

[0002] The overall situation of China's soil environment is not optimistic. The national soil pollution rate is as high as 16.1%. While the soil environment problems of industrial and mining wasteland are prominent, the soil environment quality of cultivated land is even more worrying. However, existing soil remediation equipment has repaired soil "sand" "The pollution is serious, and the nutrients are also filtered out. In addition, the recovery of the soil cleaning solution also has the problem of too much residual soil residue, which is easy to block the pipeline.

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