Thermal desorption device for amending and repairing polluted soil

Abstract

The invention provides a thermal desorption device for amending and repairing polluted soil. The thermal desorption device comprises a soil heating mechanism and an exhaust gas washing desorption mechanism, wherein the soil heating mechanism comprises a load-bearing tank, tubular heaters are arranged at the bottom of the load-bearing tank and comprise ground breaking tubes, each ground breaking tube is provided with a suction pipe and a plurality of exhausting holes, the suction pipes are separately converged to an exhaust pipe in an accommodating space, the exhaust pipe is connected with a gas stripping pump, the exhaust gas washing desorption mechanism is connected with the gas stripping pump, and heating pipes are arranged in the ground breaking tubes and are connected in parallel in the accommodating space through conducting wires. The device provided by the invention is applied to thermal desorption soil repairing treatment of organic matter polluted soil and can achieve the in-situ treatment of contaminated soil, repairing treatment procedures of the contaminated soil are simplified and are simple and efficient, and the device is applicable to the thermal desorption treatmentof large-area contaminated soil; meanwhile, an exhaust gas treatment system is arranged, the problem of environmental pollution is solved.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a thermal desorption device for improving and remediating affected soil. Background technique [0002] With the development of industrial production and the acceleration of urbanization, the soil bears more and more waste water, waste residue and waste gas from factories and human activities. If these wastes are not treated in a timely and effective manner, they will infiltrate into the soil along with the rainwater. When these pollutants accumulate to a level that exceeds the self-purification capacity of the soil, it will cause serious deterioration of the soil quality and form soil pollution. Aiming at different types of pollution in China, researchers have developed a series of remediation technologies from the three directions of physics, chemistry and biology, but the research on remediation equipment is almost blank. [0003] Among the many types of soil pollutio...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal desorption device for improving and repairing contaminated soil, which is used for in-situ thermal desorption and desorption treatment of polluted soil, and recycles the generated pyrolysis gas to solve the existing problems. The technical equipment structure is complex and the soil treatment efficiency is not high, which is not suitable for the technical problem of large-scale contaminated soil treatment

The device described in this scheme is applied to the thermal desorption soil remediation treatment of organic matter soil pollution, which can realize in-situ treatment of contaminated soil, simplify the remediation and treatment procedure of contaminated soil, simple and efficient, and is suitable for large-area pollution The thermal desorption treatment of the soil, and the waste gas treatment system is set up at the same time, which solves the problem of environmental pollution

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