Soil Vapor Phase Extraction Repair System

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 The invention relates to the field of soil pollution control, in particular to a soil gas phase extraction and restoration system. Background technique Soil vapor extraction (soil vapor extraction, SVE) is a method of 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 vapor 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, which are taken away by the air flow and extracted. After the well is collected, it is finally treated to achieve the purpose of purifying the soil in the vadose zone. Sometimes at the same time of extraction, gas injection wells can be set up to artificially inject air into the soil. The extracted gas should be discharged into the atmosphere after being treated with w...

AI Technical Summary

Problems solved by technology

Existing soil gas phase extraction repair equipment, its spray device and packing absorber are relatively traditional tail gas design structures, the spraying device has a short spray residence time, and the packing of the packing absorber needs to be disassembled to be cleaned and reused

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