Light oil polluted unsaturated zone soil in-situ remediation apparatus and method thereof
An in-situ remediation and light oil technology, applied in the restoration of polluted soil, etc., can solve the problems of complex ground treatment process, undetermined explosion-proof grade of equipment, and unsuitable for on-site use in gas stations, and achieves a simple and effective process combination, Achieve technical and economic performance and optimize the effect of restoration goals
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Embodiment approach 1
[0038] Such as Figure 1 to Figure 4 As shown, the embodiment of the present invention proposes an in-situ remediation device for light oil polluted unsaturated zone soil, which includes an underground well group system, a pipeline system and a ground treatment system. The underground well group system includes an extraction well 17, an injection well 18 and a ventilation monitoring well, the extraction well 17 has an extraction well head, and the injection well 18 has an injection well head. The piping system includes an extraction pipe set 1 , an oil and gas delivery pipe 2 a , a first liquid suction pipe 3 , a first injection pipe 4 , a second liquid suction pipe 5 and a second injection pipe 6 . The ground treatment system includes an oil and gas extraction and treatment module 7 , a microbial enhanced restoration module 8 , and a chemical oxidation restoration module 9 . The oil and gas extraction and processing module 7 includes a vacuum pump 7a, an oil and gas separati...
Embodiment approach 2
[0061] This embodiment proposes an in-situ remediation method for light oil polluted unsaturated zone soil, said method comprising steps:
[0062] A. Carry out exploration and sampling analysis on the soil pollution site of the gas station, arrange the number, distribution and depth of extraction wells, injection wells and ventilation monitoring wells according to the soil properties and the distribution of pollutants;
[0063] B. Operation of oil and gas extraction and processing module 7: After the vacuum pump 7a is started, negative pressure is generated in each extraction well, and VOCs, SVOCs and a small amount of water and soil fine particles in the soil near the extraction well pass through the extraction well head Enter the extraction tube group 1; enter the oil-gas separation tank 7b through the extraction tube group 1 to separate water and soil fine particles, inhale the vacuum pump 7a and turn it into a positive pressure, and then pass through the oil-gas delivery pi...
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