A permeable wall for groundwater pollution remediation

Abstract

The invention discloses a permeable wall for remediation of groundwater pollution, wherein the permeable wall includes an A wall and a B wall successively inserted in an underground medium along the groundwater flow direction, both the A wall and the B wall are perpendicular to the water flow direction, and both the A wall and the B wall are located on the same axis as a pollution source; the A wall is located between the pollution source and the B wall, the A wall is 20-30 m away from the pollution source, and the interval between the A wall and the B wall is 10-20 m. The A wall includes a second A wall low-permeability zone, an A wall high-permeability zone and a first A wall low-permeability zone which are coaxially arranged from inside to outside successively. The B wall includes a B wall low-permeability zone and a B wall high-permeable zone which are coaxially arranged from inside to outside successively. Through the change of the permeability coefficient, underground pollution plume is induced to flow to a zone with larger permeability, the diffusion of the plume is increased, and then the mixing between the groundwater and the plume is enhanced, so as to achieve the high-efficiency remediation of the groundwater pollution.

Description

technical field [0001] The invention relates to the field of groundwater pollution control, in particular to a permeable wall used for groundwater pollution recovery. Background technique [0002] Groundwater is an important fresh water resource, an important basis for human survival and social development, and has very high economic and ecological values. In recent years, due to the rapid development of urbanization and population growth in our country, a large amount of sewage discharge and domestic waste have led to increasingly serious groundwater pollution. At present, the country has adopted various methods to solve this environmental problem, such as physical control, chemical restoration, electrodynamic restoration, and extraction treatment. However, these methods are often complicated to operate, low in efficiency, and high in cost. Among them, although some traditional reactive permeable walls can deal with part of the groundwater pollution, they fail to exert the...

AI Technical Summary

Problems solved by technology

At present, the country has adopted various methods to solve this environmental problem, such as physical control, chemical repair, electrokinetic repair and extraction treatment, etc. However, these methods are often complex in operation, low in efficiency and high in cost

Among them, although some traditional reactive permeable walls can deal with part of the groundwater pollution, they have not played their maximum role

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