A three-dimensional circulation disturbance strengthening device and method for in-situ remediation of groundwater

Abstract

The invention relates to a three-dimensional circulation disturbance strengthening device and method for in-situ restoration of groundwater. The pumping port of the circulation well group is connected with the water injection port of the second hydraulic circulation well group through the ground adjustment system, and the water pumping port of the second hydraulic circulation well group is connected with the water injection port of the first hydraulic circulation well group through the ground regulation system; At the same time, through the first hydraulic circulation well and the second hydraulic circulation well to perform pumping and water injection operations at different times, two-way hydraulic interference is generated, and the "three-dimensional disturbance" of the restoration agent and groundwater is realized. Compared with the prior art, the present invention promotes the effective contact between the medicament and the pollutant through three-dimensional cyclic disturbance strengthening, and improves the repairing effect and repairing speed.

Description

technical field [0001] The invention belongs to the technical field of groundwater restoration, and relates to a three-dimensional circulation disturbance strengthening device and method for in-situ restoration of groundwater. Background technique [0002] The remediation technologies for groundwater pollution mainly include groundwater extraction, in-situ chemical oxidation / reduction of groundwater, groundwater bioremediation, and groundwater bioventilation. In the application of site restoration, the above technologies can be applied alone or in combination to achieve the best restoration effect. [0003] In-situ chemical oxidation technology is to inject suitable chemical oxidants in situ to promote the degradation reaction of pollutants, so as to achieve the purpose of remediating pollution. It can treat petroleum hydrocarbons, BTEX (benzene, toluene, ethylbenzene, xylene), phenols, Most organic substances such as MTBE (methyl tert-butyl ether), chlorinated organic solv...

AI Technical Summary

Problems solved by technology

[0010] (1) The aquifer may contain many dominant channels, so that the groundwater in a certain direction can be restored first, while the restoration effect of groundwater in other locations is lagging behind or difficult to meet the standard

[0011] (2) The single-direction pumping-recharging system will cause a "pharmaceutical vacuum zone" in some aquifers when the pumping system is working

[0012] (3) The application of circulation wells can only generate microcirculation systems around the wells, but has little impact on the entire aquifer. If the circulation effect is improved, a larger aeration pressure must be provided, and its structure is complex, costly, and comprehensive benefits poor

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