Remediation equipment for non-volatile organic polluted soil

Abstract

In order to solve the problems of high energy consumption, low treatment efficiency and low heat energy utilization rate in the prior art, the invention provides remediation equipment for non-volatile organic polluted soil. The remediation equipment comprises a rotary kiln, a cyclone dust remover, a soil pretreatment system, an oxidization reaction pool, an activated carbon adsorption tower and a chimney which are connected with one another through pipelines, wherein the upper end of the side wall of the cyclone dust remover is connected with the smoke outlet of the rotary kiln; the top of the cyclone dust remover is connected with the bottom of a treatment chamber of the soil pretreatment system through a pipeline; a gas collection cover of the soil pretreatment system is connected with a reaction pool of the oxidization reaction pool through a pipeline; a gas collection cover of the reaction pool is connected with the bottom of the activated carbon adsorption tower through a pipeline; and the top of the activated carbon adsorption tower is connected with the chimney through a pipeline. According to the remediation equipment, high-temperature smoke subjected to cyclone dust removal is used for pretreating the soil before cooling treatment, so that the moisture content in the soil is reduced, temperature of the soil is raised, and volatile organic pollution gas is separated out; and therefore, the heat carried by the smoke is recycled, and the heat energy utilization rate is increased.

Description

technical field [0001] The invention relates to restoration equipment for polluted soil, in particular to restoration equipment for high-concentration refractory polluted soil in industrial pollutant sites. Background technique [0002] At present, the remediation of high-concentration and difficult-to-volatile organic contaminated soil in industrial sites is generally carried out using thermal desorption technology. Generally, the contaminated soil is heated by a rotary kiln to volatilize the organic pollutants into the redox chamber, and then the heat is strengthened in the redox chamber to make it It is decomposed at high temperature, and finally the high-temperature exhaust gas is directly reduced to a certain temperature by a cooling device, and then directly discharged into the atmosphere after a series of other treatments. This method can be well used in the soil remediation of contaminated sites with high organic pollutant content, but it also has its obvious defects...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high energy consumption, low processing efficiency and low heat energy utilization rate in the prior art. The present invention provides a remediation equipment for refractory organic polluted soil

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