Fluidized plasma soil remediation device

Abstract

The invention discloses a fluidized-state plasma soil remediation device which comprises a fluidized-state plasma device, a high-voltage power supply and a bag-type dust collector, and the fluidized-state plasma device comprises a top buffer area, a fluidized-state plasma cavity and a bottom feeding bin from top to bottom; a coaxial structure consisting of an inner electrode, a dielectric material and an outer electrode which is tightly attached to the dielectric material and is grounded is arranged in the fluidized-state plasma cavity; a feeding port and an air outlet are formed in the side face of the bottom feeding bin, and the air outlet is connected with a bag-type dust A discharging opening is formed in the lower end of the bottom feeding bin; an air inlet and a circulating discharging port which are opposite to each other are formed in the lower portion of the bottom feeding bin, the air inlet is connected with a fan through a pipeline, and the circulating discharging port is communicated with the top buffering area through a conveying pipe. By means of the device, the contaminated soil remediation effect can be enhanced on the premise that the treatment capacity of the device is guaranteed, and the device can be suitable for heavily-contaminated soil.

Description

technical field [0001] The invention relates to the field of plasma application, in particular to a fluidized plasma repairing soil device. Background technique [0002] In recent years, the problem of soil pollution has received extensive attention, especially the soil around chemical plants, and the soil left over after the relocation of chemical products, contains a large amount of chemical substances, such as persistent organic pollutants (Persistent Organic Pollutants, POPs). [0003] Among them, some persistent organic pollutants, especially organochlorine pesticides (666, DDT, hexachlorobenzene, etc.), POPs can not only diffuse laterally and deeply in the soil, but also have semi-volatile and spatial Diffusion and transfer exist, and it is noted in the literature that hexachlorobenzene has been detected at concentrations of 7-32 pg / m3 in the air above the Arctic. Therefore, appropriate measures should be taken to remediate contaminated soil in POPs-contaminated areas...

AI Technical Summary

Problems solved by technology

[0007] The above patent documents all use plasma technology as the main oxidation performance to repair the soil, and use the conveyor belt to move the soil in the discharge area, thereby increasing the processing capacity of the device, but the single passage of the soil through the discharge area fails to make better use of the plasma discharge process. The active substances produced are not suitable for heavily polluted soils and high pollution concentrations

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