Device for treating organic contaminated soil on plasma fluidized bed

Abstract

The invention relates to a device for treating organic contaminated soil on a plasma fluidized bed. The device comprises the plasma fluidized bed and a high voltage power supply, wherein the plasma fluidized bed consists of an air inlet, a quartz container, a tetrafluoroethylene base, knife-shaped stainless steel electrodes, a cone-shaped stainless steel net, the organic contaminated soil, a quartz cover and an exhaust port; the cone-shaped stainless steel net is arranged at the central axis at the top of the quartz container, and is fixed directly above the electrodes. The organic contaminated soil to be treated is put in the cone-shaped stainless steel net, a carrier gas is introduced, the high voltage power supply is started, and a non-thermal electric arc plasma is quickly formed between the electrodes under the driving of the carrier gas, so that the carrier gas is converted into active gas containing active species, the organic contaminated soil is driven to form a fluidization state, the plasma fluidized bed is formed, organic pollutants in the soil are degraded and mineralized through a plasma chemical reaction, and the purpose of repairing the soil is reached. The device is combined with double advantages of the plasma and the fluidized bed, and is a new technique with industrial application potential.

Description

technical field [0001] The invention relates to the field of contaminated soil remediation, in particular to a device for treating organic polluted soil with a plasma fluidized bed. Background technique [0002] In recent years, many cities are moving some heavily polluting enterprises out of densely populated urban areas. Many of these enterprises have problems in their production and operation due to waste treatment, drug leakage, rainwater washing, waste water discharge, adsorption and settlement of exhaust gas, etc. , resulting in serious site soil pollution, especially organic matter pollution. With the advancement of urbanization and the adjustment of industrial structure, the industrial sites that continue to appear, especially the industrial sites left by heavy polluting industries in developed areas, will be social, economic and ecological environmental problems that Chinese cities must face in the future. In addition, due to the shortage of urban land, the origina...

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Problems solved by technology

In-situ restoration is generally time-consuming and does not meet the needs of rapid utilization of the site, so it is rarely used

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