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Ex-situ remediation treatment system and treatment method based on soil thermal desorption

An ex-situ remediation and soil heating technology, applied in the field of soil remediation, can solve the problems of high investment cost of soil remediation engineering equipment, achieve the effects of wide treatment range, avoid air pollution, and improve work efficiency

Pending Publication Date: 2022-04-12
HARBIN WEILAN ENVIRONMENTAL PROTECTION EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a treatment system and treatment method based on soil thermal desorption ectopic remediation. This structure and method effectively solves the control problems of new pollution sources such as high investment cost of soil remediation engineering equipment and dust pollution.

Method used

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  • Ex-situ remediation treatment system and treatment method based on soil thermal desorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An ex-situ remediation treatment system based on soil thermal desorption, which consists of: a pretreatment system 1, the pretreatment system is connected to the silo 3 through pipelines, and the silo is connected to the drum 4 through the airtight conveyor belt 2 The right end of the drum is connected, the left end of the drum is connected to the burner 5, and the upper right end of the drum is connected to the cyclone dust collector 6 through a connecting pipeline, and the cyclone dust collector is connected to the bag filter 7 through a pipeline. The bag filter is connected to the spray tower 8 through pipelines, the spray tower is connected to the atomizing cooling tower 9, and the top of the atomizing cooling tower is connected to the condensation cooling system 10 through connecting pipelines. The condensation cooling system is connected with the activated carbon adsorption tank 11.

Embodiment 2

[0022] According to the ex-situ remediation system based on soil thermal desorption described in Example 1, the activated carbon adsorption tank is connected to the chimney 12 through a pipeline, and the output of the bottom pipeline on the left side of the drum is purified soil 16 and polluted soil 15 The hook machine 14 transports it to the transport vehicle 13, and the transport vehicle sends the polluted soil to the pretreatment system for crushing and screening.

Embodiment 3

[0024] A kind of treatment system and treatment method based on soil heat desorption ex-situ repair described in embodiment 1-2, this method is:

[0025] (1) Direct thermal desorption:

[0026] The direct thermal desorption is carried out through the pretreatment system after screening, dehydration, crushing, and magnetic separation, and then the contaminated soil is sent to the inside of the desorption system through a closed conveyor belt, and the contaminated soil enters the desorption system. After the thermal rotary kiln, it is in direct contact with the flame generated by the thermal rotary kiln burner, and is evenly heated to a temperature above the gasification temperature of the target pollutant to achieve the purpose of separating the pollutant from the soil;

[0027] The tail gas enriched in gasification pollutants inside the desorption system passes through the pipeline to the cyclone dust collector and bag filter, and then enters the spray tower, atomization cooli...

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Abstract

The invention discloses an ex-situ remediation treatment system and method based on soil thermal desorption. The control problems of new pollution sources such as noise, raised dust and dust pollution in the existing soil remediation engineering need to be solved urgently. The device comprises a pretreatment system (1), the pretreatment system is connected with a stock bin (3) through a pipeline, the stock bin is connected with the right end of a roller (4) through a closed conveying belt (2), the left end of the roller is connected with a combustor (5), and the upper portion of the right end of the roller is connected with a cyclone dust collector (6) through a connecting pipeline. The cyclone dust collector is connected with a bag-type dust collector (7) through a pipeline, the bag-type dust collector is connected with a spray tower (8) through a pipeline, the spray tower is connected with an atomization cooling tower (9), the top of the atomization cooling tower is connected with a condensation cooling system (10) through a connecting pipeline, and the condensation cooling system is connected with an activated carbon adsorption tank (11). The invention is used for the ex-situ remediation treatment system based on soil thermal desorption.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil thermal desorption-based ex-situ remediation treatment system and treatment method. Background technique [0002] At present, the application of thermal desorption to remediate polluted soil in my country has developed rapidly in recent years, but the following problems still exist in the existing technology: high equipment investment cost, poor equipment applicability, expensive operating costs, etc.; insufficient understanding of different pollutants, Improper parameter combination will lead to the production of other by-products, especially dioxins during the treatment of chlorinated organic substances; the control of new pollution sources such as noise, dust, and dust pollution in soil remediation projects needs to be resolved urgently. Contents of the invention [0003] The purpose of the present invention is to provide a treatment system and treatment metho...

Claims

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Application Information

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IPC IPC(8): B09C1/06
Inventor 白雪孙洪志吴凤龙裴珊珊
Owner HARBIN WEILAN ENVIRONMENTAL PROTECTION EQUIP MFG