Multidirectional three-dimensional circulation in-situ remediation system

Abstract

The invention discloses a multidirectional three-dimensional circulation in-situ remediation system which comprises a remediation well and a monitoring well, and the remediation well and the monitoring well are vertically installed on a to-be-remediated site at intervals, the monitoring well monitors soil characteristics, an underground water flow field and pollution plume change data informationof a to-be-remediated site. A control part adjusts underground water extraction and / or remediation agent injection of the remediation well to be conducted between different wells and on different wellscreen sections of all the wells according to the obtained data information so as to promote multi-direction three-dimensional circulation of underground water and agents, and efficient removal of pollution along with water flow or full contact reaction between the agents and the pollutants can be achieved. The multidirectional three-dimensional circulation in-situ remediation system is reasonable in structure, intelligently and flexibly sets underground water extraction and medicament injection, promotes multi-directional three-dimensional circulation of underground water and medicaments, realizes efficient removal of pollutants along with water flow or full and uniform contact reaction of the medicaments and the pollutants, improves the utilization rate of the injected medicaments, saves the repair cost and improves the repair effect.

Description

technical field [0001] The invention relates to the technical field of pollution control, in particular to a multidirectional three-dimensional circulation in-situ repair system. Background technique [0002] Poor management in human industrial production activities leads to the leakage of pollutants, often leading to soil and groundwater pollution. Soil and groundwater pollution has the characteristics of concealment, long-term and complexity. Once formed, it is extremely difficult to control and repair. Among them, because of the heterogeneity of the soil, different soil media have different interception and enrichment capabilities for pollutants due to different conditions such as permeability and organic matter content. Generally, the smaller the permeability coefficient of the soil, the lower the speed of pollutant migration. ; and the higher the organic matter content of the soil, the stronger the ability to enrich pollutants. [0003] Generally speaking, the interce...

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Problems solved by technology

This invention cannot adjust injection well injection and pump well extraction according to soil medium permeability, groundwater flow field and pollution plume changes

[0005] The existing combined technology of in-situ injection wells and pumping wells is still in its preliminary stage. The adjustment of the working time and frequency of injection well injection and extraction well extraction mainly depends on on-site implementation experience, and cannot be adjusted according to the permeability of the soil layer, groundwater flow, etc. Due to the change of field and pollution plume, the injection well injection and pumping well extraction are adjusted, often resulting in problems such as limited remediation effect and waste of injection agents in polluted areas with low permeability coefficient and high organic matter content.

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