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Remediation system and remediation method of volatile organic polluted soil

A volatile organic and contaminated soil technology, applied in the field of contaminated soil remediation, can solve the problems of poor applicability and low efficiency of different soils, and achieve the effects of improving remediation benefits, reducing energy consumption, and expanding applicability

Active Publication Date: 2017-01-04
北京航天环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the embodiments of the present invention lies in the low efficiency and poor applicability to different soils when using heat treatment technology in the prior art to remediate volatile organic polluted soil[11]

Method used

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  • Remediation system and remediation method of volatile organic polluted soil
  • Remediation system and remediation method of volatile organic polluted soil
  • Remediation system and remediation method of volatile organic polluted soil

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Embodiment 1

[0043] This embodiment provides a repair system for volatile organic contaminated soil, such as figure 1 As shown, it includes: a steam subsystem 10 , an ozone subsystem 20 and an air extraction subsystem 30 .

[0044] The steam subsystem 10 includes a steam injection well 11 , a steam pipeline 12 and a steam generating device 13 . The steam generating device 13 is connected to the steam injection well 11 through the steam pipeline 12, the steam injection well 11 is arranged in the contaminated soil area W and extends vertically downwards along the surface to below the groundwater aquifer, figure 1 The middle S represents the groundwater level. Generally, the contaminated soil area W is distributed above the groundwater level S, and the steam injection well 11 is set to extend vertically downward to below the groundwater level S, so that the soil to be repaired can be heated to a predetermined temperature in the largest range, and the polluted soil can also be repaired at the...

Embodiment 2

[0050] The present embodiment provides a kind of remediation system of volatile organic polluted soil, and the difference of embodiment 1 is, as image 3 As shown, the well bore of the ozone injection well 21 extends spirally downward along the outer boundary of the polluted soil area W, and the steam injection well 11 and the gas extraction well 31 are arranged inside the area surrounded by the spiral line, and the spiral downward structure makes the ozone injection well 21 and the polluted soil The soil contact area is more uniform and the scope is wider, so the redox restoration of polluted soil is more effective, which further improves the restoration efficiency of the system.

[0051] Preferably, as image 3 In the partially enlarged area A shown, the wall of the ozone injection well 21 is provided with a capillary injection hole 211, which further strengthens the breadth and depth of contact between ozone and polluted soil, thereby further improving the repair efficiency...

Embodiment 3

[0053] This embodiment provides a remediation system for volatile organic polluted soil, except having the characteristics of Embodiments 1 and 2, such as Figure 4 As shown, the steam generating device 13 includes at least two sets of heating coils 131 , a high-frequency power supply 132 and heating pipes 133 . The output end of the heating tube 133 is connected to the input end of the steam pipeline 12, at least two sets of heating coils 131 are alternately wound on the heating tube 133, and the two ends of the heating coil 131 are connected to the high-frequency power supply 132 respectively, for heating within 30 seconds Rapidly generate steam above 100°C. like Figure 4 As shown, two sets of heating coils 131 with different thicknesses are alternately wound on the heating tube 133, and the ratio of thickness to diameter is 2:1, which accelerates the heating of the water in the heating tube 133, so that the water can quickly generate 100°C within 30 seconds. The above st...

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Abstract

The invention discloses a remediation system and a remediation method of volatile organic polluted soil and belongs to the technical field of remediation of the polluted soil. The system comprises a steam subsystem, an ozone subsystem and an exhausting subsystem; the steam subsystem comprises a steam injection well, a steam pipeline and a steam generation device; the steam injection well is arranged in a polluted soil region and vertically and downward extends to the lower side of an underground water aquifer along the earth surface; the exhausting subsystem comprises an exhausting well, an exhausting pipeline and a gas-liquid treatment device; the exhausting well is located at a part adjacent to the steam injection well and vertically and downward extends to the upper side of the underground water aquifer along the earth surface; the ozone subsystem comprises an ozone injection well, an ozone pipeline and an ozone generation device; the ozone injection well is arranged along the periphery of the polluted soil region and surrounds the steam injection well and the exhausting well; the ozone injection well extends to the lower side of the underground water aquifer. The remediation system and method of the volatile organic polluted soil have the advantages of high remediation efficiency of the volatile organic polluted soil and good adaptability to different types of soil.

Description

technical field [0001] The invention relates to the technical field of remediation of polluted soil, in particular to a remediation system and method for volatile organic polluted soil. Background technique [0002] With the rapid development of the economy, site pollution is becoming more and more serious in our country and has become an environmental problem that cannot be ignored. Petroleum, chemical, pesticide, mining, printing, building materials, spraying and other industries will produce a lot of pollutants during production. The pollutants piled up and discharged in the sites of various industries have caused serious site pollution. If the various pollutants in the abandoned polluted sites are not disposed of or handled properly, they will definitely have adverse effects on the surrounding ecological environment and human health. [0003] Organic pollutants are one of the most widely distributed pollutants in contaminated sites. Organic pollutants can be adsorbed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
CPCB09C1/08B09C2101/00
Inventor 伍可炳范博李刚朱赟张琦
Owner 北京航天环境工程有限公司
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