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Soil vapor extraction and remediation system

A gas-phase extraction and repair system technology, which is applied in the field of soil pollution control, can solve the problems of short spray residence time, etc., and achieve the effect of improving the treatment effect and improving the effect

Inactive Publication Date: 2016-12-21
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing soil gas phase extraction repair equipment, its spray device and packing absorber are relatively traditional exhaust gas design structures, the spraying device sprays and stays for a short time, and the packing of the packing absorber needs to be disassembled to be cleaned and reused

Method used

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  • Soil vapor extraction and remediation system

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Embodiment Construction

[0018] The specific embodiments of the present invention will be described with reference to the accompanying drawings.

[0019] like figure 1 As shown, the soil gas phase extraction and repair system includes an absorption tower 1, a water vapor separation device 2 and a packing absorber 3; the intake pipe 5 of the absorption tower 1 is connected with the intake air pump; the air outlet pipe of the absorption tower 1 is connected to the water vapor The air inlet of the separation device 2, the air outlet of the water vapor separation device 2 is connected with the air inlet of the packing absorber 3, and the air outlet of the packing absorber 3 is connected with the induced draft fan 4 through a pipeline, and the induced draft fan 4 is connected with an exhaust cylinder 6;

[0020] The said absorption tower 1 has a helical sheet 11 inside, the helical sheet 11 is a double-layer hollow structure, the lower surface of the helical sheet 11 is distributed with nozzles 12, and the...

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Abstract

The invention relates to the field of soil contamination treatment, in particular to a soil vapor extraction and remediation system. An air inlet pipe of an absorption tower is connected with an intake sucking pump. An air outlet pipe of the absorption tower is connected with an air inlet of a water vapor separation device. An air outlet of the water vapor separation device is connected with an air inlet of a packing absorption device. An air outlet of the packing absorption device is connected with an induced draft fan through a pipeline. The induced draft fan is connected with an exhaust cylinder. A spiral piece is arranged in the absorption tower. The spiral piece is of a double-layer hollow structure. Nozzles are distributed on the lower surface of the spiral piece. A hollow part of the spiral piece is connected with a spray liquid water inlet pipe. The bottom of the absorption tower is connected with the air inlet pipe, and the top of the absorption tower is connected with the air outlet pipe. According to the soil vapor extraction and remediation system, the spray and absorption effects are improved through the spiral type absorption tower, and the extracted air treatment effect is improved; and meanwhile a rotary packing block is divided into four blocks which are used in turn and cleaned, and no disassembly is needed, so that the equipment can operate continuously and normally.

Description

technical field [0001] The invention relates to the field of soil pollution control, in particular to a soil gas phase extraction and restoration system. Background technique [0002] Soil vapor extraction (SVE) is a method for in-situ remediation of soil volatile organic pollution, which is used to deal with the pollution of formation media in the vadose zone. The basic principle of soil gas phase extraction is to use a vacuum pump to generate negative pressure. When the air flows through the polluted area, it desorbs and entrains the volatile and semi-volatile organic pollutants in the soil pores. After the well is collected, it is finally processed to achieve the purpose of purifying the soil in the vadose zone. [0003] Sometimes at the same time of extraction, gas injection wells can be set up to artificially introduce air into the soil. The extracted gas should be discharged into the atmosphere after water vapor removal and adsorption treatment, or corresponding gas ...

Claims

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/005B09C2101/00
Inventor 高吉喜何斐庄巍解宇峰刘爱萍晁建颖王文林唐晓燕杭小帅李文静
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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