A soil remediation system and method combining physical and chemical

Abstract

The invention discloses a physical and chemical combined soil repairing system which is characterized by comprising a soil source conveying unit, a soil source breaking unit, a ferrous material adsorption unit, a soil source screening unit, a stone conveying unit, a heat volatilizing unit, a chemical cleaning and precipitating unit, a dewatering unit, an airing unit and a clean soil source conveying unit. The mode of combining physical heating volatilization with chemical cleaning is adopted by the invention, so that the soil repairing is more thorough, and the secondary pollution is effectively reduced; the disturbance of water flow in a filter screen area is guaranteed by a recycling process of a cleaning fluid recycling module, so that the problem of easiness in plugging of the filter screen is solved; and the cleaning fluid recycling module can effectively restrain the disturbance to bottom precipitates, so that the recycled cleaning fluid contains no soil impurity.

Description

technical field [0001] The invention relates to the field of environmental protection machinery, in particular to a physical-chemical combination soil restoration system and method. 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 physical-chemical combination soil remediation system...

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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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