Remediation device for organic contaminated soil

Abstract

The invention discloses a remediation device for organic contaminated soil, which is provided with a water spraying pipe, a water pumping pipe and a backfilling pipe for directly conveying an oxidizing agent and a mud-water mixture and backfilling soil correspondingly, sulfate radicals are generated through the reaction of persulfate and filler, pollutants are degraded when the contaminated soil is sprayed and impacted, and the mud-water mixture falling by impact is pumped into a processor main body, and under the combined action of a ultrasonic generation device and a ultrasonic vibration column and continuous supply of small ozone bubbles, organic pollutants are degraded in an accelerated manner, and soil particles are settled in the accelerated manner and enter the backfilling pipe. According to the device, the treatment process of solid pollution is fluidized, the polluted soil is continuously, effectively and deeply remedied, a large amount of oxidizing agents do not need to be injected into the ground, waste of the oxidizing agents and pollution to the soil and underground water are greatly reduced, the defects of traditional in-situ remediation are overcome, heavy engineering machinery for ex-situ remediation does not need to be used for excavating the soil, and the operation is simple, economical and effective.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a repairing device for organic polluted soil. Background technique [0002] With the rapid development of social economy, the problem of soil pollution is becoming more and more serious, especially when the existing chemical enterprises move out of the city, most of the soil pollution of chemical waste land will occur. The soil of chemical waste land contains a large number of compound organic pollutants, which will change the physical and chemical properties of the soil, destroy the local ecosystem, have indirect and direct toxic effects on the animals and plants in the area, and cause serious damage to human health through the enrichment and amplification effects of the food chain. Hazards pose a threat to the sustainable use of land resources and seriously affect the use of land. Before the conversion and secondary development of chemical waste land, organically pollu...

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Problems solved by technology

[0009] At the same time, the above-mentioned traditional chemical oxidation remediation process is a liquid-phase injection method. Due to the good adsorption capacity of the soil and the fluidity of the oxidant, both the contaminated part of the soil and the uncontaminated part of the soil will be oxidized by the oxidant, and a large amount of Fluid oxidants are partially wasted by uncontaminated soil. At the same time, these oxidants will destroy the soil structure and composition when degrading organic pollutants in the soil, resulting in deterioration of soil quality and making subsequent land reclamation very difficult.

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