Fertility improving type thermal desorption soil remediation equipment and method

Abstract

The invention discloses fertility improving type thermal desorption soil remediation equipment which comprises a copropel tower, soil thermal desorption equipment and a manure and soil mixing fertility improving device, wherein the copropel discharging end of the copropel tower is connected with the copropel feeding end of the manure and soil mixing fertility improving device; and the thermal desorption soil discharging end of the soil thermal desorption equipment is connected with the soil source feeding end of the manure and soil mixing fertility improving device. The fertility improving type thermal desorption soil remediation equipment is simple in structure; under the continuous rotation squeezing action of transmission squeezing blades with gradually reduced blade screw pitch, copropel in a copropel squeezing passage generates extrusion force which gradually increases in the axial discharging direction, so that the continuously squeezed copropel in the copropel squeezing passageis continuously and uniformly extruded out to a manure and soil mixing passage through a plurality of copropel squeezing holes and is fully blended and mixed with soil continuously stirred and pushedforward in the manure and soil mixing passage; and after blending of copropel and soil, the fertility of thermal desorption remediation soil is improved, and the soil viscosity is also increased to effectively prevent restored soil from desertification.

Description

technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to a fertilizer-enhancing thermal desorption soil remediation device and a method thereof. Background technique [0002] After soil thermal desorption restoration, the soil source will be dry, lack of water, and it is easy to desertify, and the soil after thermal desorption often loses a lot of nutrients, and the soil fertility is low; and the existing soil thermal desorption often directly adopts flame The method is to heat the soil source in the soil thermal desorption chamber at a high temperature, which will easily cause additional chemical reactions such as oxidation and decomposition in addition to the volatilization and desorption of harmful substances in the soil source, resulting in secondary pollution. At the same time, the existing soil thermal Desorption also has the disadvantages of uneven heating and slow heating. Contents of the invention [0003] Purpos...

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Problems solved by technology

[0002] After soil thermal desorption repair, the soil source will be dry, lack of water, and it is easy to desertify, and the soil after thermal desorption often loses a lot of nutrients, and the soil fertility is low; and the existing soil thermal desorption often directly adopts flame The method is to heat the soil source in the soil thermal desorption chamber at a high temperature, which will easily cause additional chemical reactions such as oxidation and decomposition in addition to the volatilization and desorption of harmful substances in the soil source, resulting in secondary pollution. At the same time, the existing soil thermal Desorption also has the disadvantages of uneven heating and slow heating

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