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 contaminated soil, etc., can solve the problems of complex ground treatment process, undetermined equipment explosion-proof level, unsuitable for on-site use of gas stations, etc., to achieve simple and effective process combination, Achieve technical and economic performance, optimize the effect of restoration goals
CN103170497BActive Publication Date: 2014-07-02BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2014-07-02

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Abstract

The invention relates to a light oil polluted unsaturated zone soil in-situ remediation apparatus and a method thereof. The apparatus comprises an underground well group system, a pipeline system and a ground processing system. The underground well group system comprises an extraction well, an injection well and a ventilation monitoring well. The ground processing system comprises: an oil gas extracting and processing module which comprises a vacuum pump, an oil-gas separation tank and an oil gas adsorption tank, wherein the inlet of the oil-gas separation tank is connected with the extraction well, the outlet of the oil-gas separation tank is connected with the inlet of the oil gas adsorption tank, and the outlet of the oil gas adsorption tank is communicated with the atmosphere; a microbial enhanced remediation module which comprises a microbe and nutrient solution preparation tank, wherein a first injection solution is contained in the microbe and nutrient solution preparation tank, the microbe and nutrient solution preparation tank is connected with the inlet of a first injection metering pump, and the outlet of the first injection metering pump is connected with the injection well; and a chemical oxidation remediation module which comprises a chemical oxidant preparation tank, wherein a second injection solution is contained in the chemical oxidant preparation tank, the chemical oxidant preparation tank is connected with the inlet of the second injection metering pump, and the outlet of the second injection metering pump is connected with the injection well.
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Description

technical field

[0001] The invention relates to the field of environmental protection, in particular to an in-situ remediation device and method for light oil-polluted unsaturated zone soil at gas stations, which combines "soil gas phase extraction", "microbial enhanced degradation" and "chemical oxidation Degradation" and other functions. Background technique

[0002] Soil oil pollution often has the characteristics of many types of pollutants, long incubation period, wide diffusion area, great harm, complex underground structure, difficult treatment, and high repair cost. If soil pollution cannot be effectively controlled now, it may further deteriorate in the future, threatening the ecological environment and human health. The development of on-site remediation methods and equipment for oil-contaminated soil has become an urgent need for environmental protection at this stage.

[0003] Statistical analysis shows that the leakage of underground oil storage tanks (USTs) i...

Claims

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