Organic matter contaminated soil movable four-roller continuous rotation thermal desorption treatment system and application

Abstract

The invention relates to an organic matter contaminated soil movable four-roller continuous rotation thermal desorption treatment system. The treatment system comprises a soil feeding system, a heating system, a rotation thermal desorption system, a dust and mist removing system, an activated carbon adsorption system, a tail gas treatment system and a control system. The system can achieve continuous feeding, the contaminated soil treatment amount is large, and automatic control is achieved; the direct heating manner is adopted, the high-temperature steam makes sufficient contact with contaminated soil in the rotation thermal desorption system, and the thermal desorption efficiency is extremely high; and the adsorption manner is adopted for tail gas treatment, secondary pollution cannot begenerated, and environment protection is facilitated.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, in particular to a mobile four-drum continuous-rotation thermal desorption treatment system for organic matter polluted soil and its application. Background technique [0002] With the adjustment of industrial structure and the development of organic pollutant treatment, a large number of high-polluting enterprises such as steel plants and chemical plants, especially those that produce and use organic pollutants, will be gradually closed or relocated, leaving behind a large amount of high-pollution risk soil. The harm of soil pollution is mainly that some organic matter will pollute the surrounding air and water after polluting the soil, while some organic matter or heavy metal pollutants will pass through the food chain and have adverse effects on the health of surrounding people. The acceleration of urbanization has promoted the transformation of the original land function, and a large...

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Problems solved by technology

[0004] Off-site Treatment Process and Device for Soil Contaminated by Volatile and Semi-volatile Organic Compounds (ZL200410056888.7) announced an off-site treatment process and device for soil contaminated by volatile and semi-volatile organic compounds, but the patent cannot feed continuously, And the polluted soil cannot be treated on site;

[0005] Direct thermal desorption equipment (CN101712042A) announced a direct thermal desorption device for contaminated soil, but the tail gas is treated by incineration, which has the risk of producing dioxins;

[0006] A drum-type reverse thermal desorption system for organic-contaminated soil (CN102029287A) discloses a drum-type reverse thermal desorption system for organic-contaminated soil, but the mixing of hot air and polluted soil is insufficient, the energy consumption is large, and the thermal desorption efficiency is not high enough

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