Vacuum tube well precipitation and disposal method for rapidly restoring in-situ water and soil in polluted place

Abstract

The invention discloses a vacuum tube well precipitation and disposal method for rapidly restoring in-situ water and soil in a polluted place. The method comprises the following steps: arranging a precipitation tube well in a polluted region, and arranging a vacuum pump air extracting system, a submerged pump water pumping system and a chemical filling pipe in the precipitation tube well; arranging a disposal well in the polluted region, and connecting the disposal well with the submerged pump water pumping system; starting the vacuum pump air extracting system so as to guide polluted water in soil to flow into the precipitation tube well; continuously adding a restoring chemical into the chemical filling pipe, and reacting with the polluted water entering the precipitation tube well; after reacting for certain time, starting the submerged pump water pumping system, delivering pumped water into the disposal well, infiltrating the water in the disposal well into the soil again, repeatedly operating in the way, and finishing restoring after detecting that water and oil specimens meet standards. The method has the advantages of low cost, high water collecting efficiency, large affecting radius and capability of promoting underground water hydraulic circulation, and realizes water and soil integrated restoration in the polluted place.

Description

technical field [0001] The invention belongs to the technical field of groundwater and soil pollution control, and in particular relates to a vacuum tube well dewatering and recharging method for in-situ water and soil rapid restoration of polluted sites. Background technique [0002] With the rapid development of my country's economy, various soil and groundwater environmental pollution accidents caused by industrial and agricultural production and construction activities occur frequently, causing serious economic losses and negative social effects, endangering people's property and life safety. The leakage of toxic and harmful substances in industrial production, the illegal discharge of sewage, pesticide residues, and the leakage of leachate from simple landfills are the main causes of soil and water pollution. Therefore, with the rapid development of urban construction, the demand for the control and restoration of groundwater and soil pollution is increasing. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] Extraction treatment and remediation technology is a traditional groundwater pollution control method, which is widely used, but it has the disadvantages of high operating cost, long treatment time and ineffective effect; solidification / stabilization is a fast and economical contaminated soil treatment technology, but The long-term stability of the solidified body is poor, and the stirring construction of the agent greatly disturbs the undisturbed soil; the in-situ chemical and biological remediation technology has the advantages of high removal efficiency and wide repair range, but due to the pollutants in the groundwater aquifer The research on the migration, transformation and degradation rules is not yet clear, which often leads to incomplete remediation or pollution rebound

In short, the current water and soil restoration technology generally has shortcomings such as high cost, long construction period, and difficult to guarantee the effect.

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