In-situ atomization and injection system for repairing contaminated sites

Abstract

The invention relates to an in-situ atomization and injection system for repairing contaminated sites. The system comprises: a medicament dilution unit, wherein the medicament dilution unit comprisesa medicament stock solution tank, a medicament dilution tank and a mixer; an injection unit, wherein the injection unit comprises an air compressor, a buffer tank, a pressure gauge, an air filter, a flow meter, a check valve, a metering pump, a pressure gauge and a control panel; and an atomization unit, wherein the atomization unit includes an injection well, an atomizing nozzle, a perforated injection tube, spray holes and a monitoring well. The chemical stock solution tank is connected with the medicament dilution tank through a pipeline, and a diluted medicament goes through the check valve and the metering pump and enters the atomizing nozzle; and compressed air goes through the buffer tank, the air filter and the flow meter and enters the atomizing nozzle. The diluted medicament andthe compressed air collide with each other in the atomizing nozzle to form a misty medicament, and the misty medicament enters the soil and groundwater through the spray holes to decompose or stabilize the pollutants in the soil and groundwater.

Description

technical field [0001] The invention belongs to the technical field of environmental restoration, and in particular relates to an in-situ atomization injection system for repairing polluted sites. Background technique [0002] For areas with heavy soil pollution and high-risk areas, the main pollutants of the polluted site are determined by the industry type and technological level of the enterprise, involving industries such as iron and steel, coking, chemicals, dyes, textiles, printing and dyeing, automobile manufacturing, and pesticides. Including sites polluted by heavy metals, sites polluted by persistent organic pollutants, sites polluted mainly by organic pollution such as petroleum, chemical industry, coking, etc., and electronic waste pollution. [0003] After the relocation of industrial enterprises, whether the sites left behind are idle, abandoned or developed and reused, they will have varying degrees of impact on human health. Industrial polluted sites may lea...

AI Technical Summary

Problems solved by technology

Patent CN104438315 A discloses an in-situ chemical oxidation injection device for repairing polluted soil and groundwater, which provides a simple, fast and feasible repair method for contaminated sites; but this patent only uses conventional injection methods, which are not effective Increase the diffusion radius of the drug

Patent CN203448391 U discloses an in-situ remediation system for polluted soil, including a soil liquefaction unit and an oxidative degradation unit. The shock wave generated by the instantaneous release of high-pressure water will liquefy the soil around the output tip into mud, and the high-pressure water will fully contact the soil, which can Thoroughly restore the soil in situ and avoid secondary pollution of the air caused by pollutants in the soil; however, this patent requires the installation of aeration tanks, sedimentation tanks, ozone tanks, hydrogen peroxide tanks and related supporting facilities at the same time, the process is complicated and the process is cumbersome

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