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Organic contaminated soil vapor extraction equipment

A gas-phase extraction and organic pollution technology, applied in the field of soil remediation, can solve the problem that organic pollutants are not easy to be sucked

Active Publication Date: 2021-06-08
HEBEI YUHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of gas-phase extraction equipment for organic polluted soil that can achieve air injection to promote the volatilization of organic pollutants in mixed soil containing various organic pollutants in volatile or semi-volatile soil. , to solve the problem that multiple mixed organic pollutants are not easy to be sucked in the above-mentioned background technology;

Method used

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  • Organic contaminated soil vapor extraction equipment
  • Organic contaminated soil vapor extraction equipment
  • Organic contaminated soil vapor extraction equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Such as Figure 1-7 As shown, a gas-phase extraction device for organic polluted soil includes a tail gas discharge pipe 1, a vacuum blower 6 communicated with the tail gas discharge pipe 1, an exhaust pipe 2 communicated with the suction port of the vacuum blower 6, and is sleeved on the The ventilation shaft 4 on the outer circumference of the suction pipe 2 and the suction device 3 for absorbing gas-liquid and injecting gas;

[0081] The spray suction device 3 includes a spray head 32 arranged in the ventilation shaft 4 and a drive device 31 for driving the spray head 32 to rotate; the spray head 32 is arranged in the ventilation shaft 4; the drive device 31 is arranged on the upper part of the exhaust pipe 2; it also includes an exhaust gas treatment device 5 communicated with the exhaust gas discharge pipe 1. The inner wall of the ventilation shaft 4 is provided with a left helical groove 41A extending axially along the ventilation shaft 4 and a right helical groo...

Embodiment 2

[0090] The on-off device 7 also includes a transposition cylinder 74, a transposition slide plate 75 fixedly connected to the piston rod of the transposition cylinder 74, and a transposition slide seat 76 slidably connected with the transposition slide plate 75; The position slide seat 76 is fixedly connected to the suction port installation side of the vacuum blower 6; the first position change slide seat hole and the second position change slide seat hole are arranged on the described position change slide seat 76; the first position change slide seat hole The axis of the seat hole and the axis of the second transposition slide seat hole are on the same horizontal line; the first transposition slide seat hole is coaxial with the left suction port A, and the second transposition slide seat The hole is coaxial with the right side suction port B; the transposition slide plate 75 is provided with more than one transposition slide plate hole; the transposition slide seat 76 is int...

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Abstract

The invention relates to organic contaminated soil gas phase extraction equipment. The organic contaminated soil gas phase extraction equipment comprises a tail gas exhaust pipeline, a vacuum air blower communicated with the tail gas exhaust pipeline, an exhaust pipe communicated with a suction opening of the vacuum air blower, a ventilation shaft arranged on the outer circumference of the exhaust pipe in a sleeving mode, a spraying and sucking device for absorbing gas liquid and spraying gas, and a tail gas treatment device communicated with the tail gas exhaust pipeline. A driving device in the gas-phase extraction equipment drives the spraying and sucking device to extract water molecules and polluted air in soil in a saturated region, then fresh air with a certain pressure is sprayed to the polluted soil in the saturated region, and volatilized and desorbed organic pollutants are brought to an unsaturated region; so that the soil organic pollutants which are high in concentration and not prone to volatilization can be extracted and removed in a large area, and the soil remediation efficiency is improved.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a gas-phase extraction device for organic polluted soil. Background technique [0002] With the rapid development of economy and society, the demand for petroleum and its products is increasing, and many reasons lead to the increasing number of petroleum-related soil pollution, which has become a major environmental problem that needs to be solved urgently. The survey found that the soil in some oilfield areas is seriously polluted by oil, and the oil content in most soil samples collected within 100m around the oil well is much higher than the critical value (500mg / kg). Contaminated soil can be divided into ex situ remediation and in situ remediation. The former is simple and easy to dig out the contaminated soil first, and then carry out subsequent treatment, but it is easy to cause secondary pollution, and the repair cost is high, generally suitable for small-scale or heavily ...

Claims

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/005B09C2101/00
Inventor 刘星海李玉会徐铁兵张奇陈雨牛苏会吴伟
Owner HEBEI YUHUAN ENVIRONMENTAL PROTECTION TECH CO LTD