Underground water circulating well system

Abstract

A circulating well body of the underground water circulating well system is integrally formed by a plurality of screen pipe sections and solid pipe sections which are separated from one another in the axial direction, variable-direction hydrodynamic cavitation assemblies capable of forming wake flow cavitation bubbles are further arranged in the different screen pipe sections, and the variable-direction hydrodynamic cavitation assemblies are arranged at the corresponding screen pipe positions in the circumferential direction. And a liquid flow containing cavitation bubbles for removing dirt of the respective screen pipe is formed at the water inlet front end of the corresponding screen pipe by means of flowing of underground water to be purified. Blockages around the sieve tube of the circulating well are broken through the hydrodynamic cavitation effect, and blockage of a well body of the circulating well is relieved; the cavitation erosion speed of the screen pipe is reduced / increased by changing the direction of the cavitation pipe, and the service life of the circulating well is prolonged.

Description

technical field [0001] The invention relates to the technical field of in-situ restoration of groundwater pollution, in particular to a groundwater circulation well system. Background technique [0002] Groundwater circulation well is an in-situ remediation technology that can remove pollutants in groundwater and saturated soil. Combined with bit treatment technology, the water in the aquifer can be introduced into the well through the lower screen, and then injected into the aquifer from the upper screen, without taking it out of the surface, and the groundwater can be repeatedly circulated around the circulation well, continuously draining the groundwater into the aquifer. Volatile pollutants are separated from gas and liquid and pumped to the ground for treatment, or discharged to the vadose zone through the upper screen, and degraded by in-situ bioremediation until the pollutants are fully removed. [0003] The groundwater circulation well technology divides the well bo...

AI Technical Summary

Problems solved by technology

The device aerates through the aeration cylinder as a whole. Although it can reduce the dead angle of aeration, the aeration is too uniform, and the aeration of the small conical holes of the spoiler is not targeted, and the air content in the water of the small conical holes cannot be rapidly increased. to a higher level

The cavitation jet direction of the device is also not adjustable

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