Method for remedying oil pollution by unitedly using air shatter crack and microorganism and device thereof

Abstract

The invention relates to environmental protection of oil and gas fields and provides a method for remedying oil pollution by unitedly using air shatter crack and microorganism and a device thereof. The method comprises the following steps: firstly, carrying out the air shatter crack on soil layer polluted by oils, removing pollutants in a vaporphase by using a vacuum pump, and opening a high-pressure sprayer to evenly disperse and inject culture mediums or microorganism into the soil; and the outlet of a central extraction well is connected with the vacuum pump, continuous airflows are extracted in the extraction well by the vacuum pump, and the balance of oxygen is supplied by peripheral wells for the purpose of keeping the continuous supply of the oxygen in soil pore space to remove the pollutants in the vaporphase. The invention also provides the device which is composed of an air compression engine, the vacuum pump, a valve, the high-pressure sprayer, a feed tank and a mixed tank. Compared with the homogeneous processing techniques, the invention saves cost by about 40-50% and economizes running cost by 20-35%; in addition, maintenance and management cost of the invention is 40-75% of that of the homogeneous processing techniques.

Description

technical field [0001] The invention relates to oil and gas field surface engineering technology and environmental protection technology in the petroleum industry, in particular to a combined air vibration cracking and microbe repair method and device for soil and groundwater oil pollution. Background technique [0002] At the same time of oil production, the pollution of its process and products to the environment has become more and more serious, which has endangered human health and survival. As a typical negative product accompanying the petroleum industry, the organic pollution of soil and groundwater produced in the production, transportation, and storage of petroleum products has gradually attracted great attention from the industry and even the entire society, and has become a worldwide environmental problem. [0003] When oil leaks into the underground layer, it often exists on the surface of the water in the form of free phase. The non-aqueous phase liquid can be ...

AI Technical Summary

Problems solved by technology

[0010] However, in the actual application of on-site repair, there is no feasible combined repair process and specific implementation plan.

Moreover, the superimposed application of the two technologies will inevitably increase the land occupation and energy consumption while improving the governance effect, and increase the equipment process at the same time, making it difficult to operate, manage and maintain, which will greatly increase the overall operating cost

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