In-situ oxidation and circulating well combined repairing system for organic pollution site

Abstract

The invention discloses an in-situ oxidation and circulating well combined repairing system for an organic pollution site. The in-situ oxidation and circulating well combined repairing system for theorganic pollution site comprises an in-situ oxidation system and a circulating well system, wherein the in-situ oxidation system uses an ozone injection system; and the circulating well system comprises a circulating well body, an aerating system, a vacuum extraction system and a blowoff system. The circulating well body comprises a circulating well internal sleeving well and a circulating well outer sleeve, the circulating well internal sleeving well is placed in the circulating well outer sleeve, an upper inner sleeve and a lower inner sleeve are separately arranged on the circulating well internal sleeving well vertically, a cement bentonite seal, a large-grain-size quartz sand seal and a small-grain-size quartz sand seal are separately arranged on the circulating well outer sleeve fromtop to bottom, and the top of the circulating well body is sealed. By combination of in-situ ozone injection and a circulating well technology, repairing radius of the pollution site is expanded, andorganic pollutants in an unsaturated zone and underground water in the pollute site are removed.

Description

technical field [0001] The invention relates to the field of restoration and treatment of polluted sites, in particular to a combined restoration system of in-situ oxidation and circulation wells for organic polluted sites. Background technique [0002] With the rapid development of the petroleum industry, chemical industry, and pharmaceutical industry, oil leakage, the use of pesticides and fertilizers, and the random placement and discharge of organic waste by factories and enterprises have caused a large number of pollutants to enter the soil and groundwater, seriously threatening the ecological environment and human health. healthy. [0003] Currently, site pollution remediation technologies include ex-situ remediation and in-situ remediation. In-situ remediation technology refers to the method of in-situ remediation without moving or transporting the contaminated objects under the condition of basically not destroying the natural environment of soil and groundwater. I...

AI Technical Summary

Problems solved by technology

However, the disclosed technologies all adopt the method of injecting oxidizing agent in the well. Due to the liquid gravity of the oxidizing agent, it can only act on the pollutants in the polluted groundwater, so the contaminated part of the vadose zone in the polluted site cannot be treated.

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