A device for remediating organically polluted soil

Abstract

The invention discloses a repairing device for organic polluted soil, which is provided with a water spraying pipe, a water pumping pipe and a backfilling pipe to directly transport the oxidant, the mud-water mixture and the backfilling soil respectively, and utilizes persulfate to react with fillers to generate sulfate radicals, thereby reducing pollution When the soil is sprayed and impacted, the pollutants are degraded, and the mud-water mixture that falls under the impact is pumped into the main body of the processor. Under the joint action of the ultrasonic generating device and the ultrasonic vibration column and the continuous supply of small ozone bubbles, the organic pollutants are accelerated. Degradation, the soil Particles settle at an accelerated rate into the backfill tube. The device of the present invention fluidizes the treatment process of solid pollution, carries out continuous and effective deep restoration of polluted soil, does not need to inject a large amount of oxidant into the ground, greatly reduces the waste of oxidant and the pollution of soil and groundwater, and overcomes the traditional in-situ The disadvantages of repairing are that there is no need to use major engineering machinery for ex-situ repairing to excavate 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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