Device and method for recovering flowing oil in polluted soil

Abstract

The invention relates to a device and a method for recovering flowing oil in polluted soil. The device and the method are embodied in that fine through holes of an oil collection bucket are prevented from blockage by virtue of compressed air, and in more detail, in the device and the method which are disclosed by the invention, polluted fluid mixing layers are captured by the oil collection bucket from the polluted soil through the fine through holes; an oil collection amount sensor detects the number of the polluted fluid mixing layers captured by the oil collection bucket; a drive controller controls the driving of an underwater fan according to the number of the polluted fluid mixing layers, which is detected by the oil collection amount sensor; the underwater fan enables a fan to rotate, thereby generating vortexes in the polluted fluid mixing layers captured by the oil collection bucket; the drive controller controls the driving of a vacuum pump after a set time after the vortexes are generated; and the vacuum drives, a polluted fluid in the polluted fluid mixing layers captured by the oil collection bucket is adsorbed through a polluted fluid adsorption pipe, and then the polluted fluid is forcibly drained through a spiral hose and a pipeline.

Description

technical field [0001] The technical field of the present invention relates to a device and method for recovering fluid oil in polluted soil, in particular to a device and method for recovering fluid oil in polluted soil, which is embodied in the use of compressed air to prevent the fine through holes of the oil collection barrel from being blocked. devices and methods. Background technique [0002] The occurrence of soil pollution comes from the leakage of polluting substances such as stopped / abandoned mine areas, industrial parks, underground storage tanks for oil and toxic fluids, or oil pipelines, especially from stopped / abandoned mines, smelters, and waste buried in the ground. Harmful polluting fluids discharged from industrial facilities, etc. continue to accumulate in the surrounding soil, polluting the surrounding soil, and causing environmental damage that even the groundwater is polluted. In response to this, as a method of removing polluted fluid (i.e., oil) per...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned conventional device for recovering fluid oil in polluted soil penetrates polluted fluid together with groundwater through countless fine through-holes formed on the outer diameter of a hollow tube-shaped oil collecting pipe buried vertically underground. At the same time, if impurities are mixed in the fine through holes, the contaminated fluid will stick to the impurities and harden as time goes by. Therefore, the oil collection efficiency of the oil collection pipe will be reduced by blocking the fine through holes, and eventually there is a possibility that the oil collection pipe needs to be replaced. The problem of increased cost burden

[0006] In the above-mentioned existing device for recovering fluid oil in polluted soil, a polluted fluid adsorption tube soaked to a predetermined depth is provided on the lower water surface of the buoyancy mechanism that always floats on the water surface of the polluted fluid mixed layer, so that it has nothing to do with the fluctuation of the water level. Only the polluted fluid is selectively removed, but in the case of a mixed layer in which the polluted fluid and groundwater are mixed with each other, it is difficult to distinguish the polluted fluid and groundwater from each other due to their different boiling points. Considerable time and limitations in which only contaminated fluids are selectively removed

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