Thermal desorption repairing system and thermal desorption method of contaminated soil

Abstract

The invention discloses a thermal desorption repairing system and a thermal desorption method of contaminated soil, wherein the system mainly comprises a preheating device, a combustion device and a waste gas treatment device; the preheating device comprises a transversely arranged material conveying roller, and two ends of the material conveying roller are respectively a feed port and a discharge port; the combustion device is connected with the discharge port; a material crushing device is arranged on the feed port; the waste gas treatment device comprises a dust-gas separation device, a waste heat recovery device, a primary waste gas treatment device and a secondary waste gas treatment device which are sequentially arranged; and an air inlet and an air outlet are formed in the waste heat recovery device, and the air outlet is communicated with the feed port of the material conveying roller. According to the thermal desorption repairing system and the thermal desorption method of the contaminated soil, the problem that in the prior art, secondary pollution of dust is caused when waste gas generated after combustion treatment of the contaminated soil is collected and treated is solved.

Description

technical field [0001] The invention belongs to the field of environmental treatment, and more specifically relates to a thermal desorption repair system and a thermal desorption method for polluted soil. Background technique [0002] Thermal desorption is to separate the organic pollutants in the soil and restore the soil to a usable state. With the acceleration of urbanization and industrialization in our country, the adjustment of industrial structure has been continuously intensified. Some industrial enterprises in urban areas have been shut down or relocated, and a large number of polluted sites have been left in urban areas, which brings serious environmental risks. Restricted the construction and development of the city. Among the many decommissioned industrial polluted sites, most of them are organic polluted sites. The main types of organic pollutants include: petroleum hydrocarbon pollutants, halogenated hydrocarbon pollutants, pesticide pollutants, polycyclic aro...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal desorption repair system and a thermal desorption method for contaminated soil, so as to solve the problem in the prior art that the waste gas generated after the burning of contaminated soil will cause dust secondary pollution during collection and treatment

Images