Soil ex-situ remediation system and remediation method thereof

Abstract

The invention relates to the field of soil pollution abatement equipment, in particular to a soil ex-situ remediation system. The soil ex-situ remediation system comprises a soil excavation device, asoil sorting device, a soil conveying device, a reagent release device and a mixing device. The five parts work together so as to achieve the purpose of soil remediation. The structural design of eachpart is reasonable, and the remediation efficiency and effect is greatly improved integrally.

Description

technical field [0001] The invention relates to the field of soil pollution control equipment, in particular to a soil restoration system. Background technique [0002] Soil pollution can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium and fluorine, etc., organic pollutants Pollutants mainly include organic pesticides, phenols, cyanides, petroleum, synthetic detergents, and harmful microorganisms brought by urban sewage, sludge, and manure. When the soil contains too many harmful substances and exceeds the self-purification capacity of the soil, it will It will cause changes in the composition, structure and function of the soil, inhibit microbial activities, and gradually accumulate harmful substances or their decomposition products in the soil through "soil→plant→human bo...

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Problems solved by technology

[0004] 1. Soil excavation equipment: At present, most of the devices for ectopic repair of soil are original devices, such as excavators, and the excavation depth control of excavators is not precise, relying on experience to excavate soil, and can only complete the excavation action , so the efficiency is extremely low;

[0005] 2. Soil sorting equipment: During the screening process, the dry soil is crushed by vibration in the screen frame, which is easy to raise dust, and it is easy to float into the air after screening, polluting the air; Vibration, easy to generate noise and affect the working environment;

[0006] 3. Soil conveying equipment: After the polluted soil is pulverized, it needs to be transported to the mixing equipment through the conveying equipment. The contaminated soil is mixed with the chemical agent in the mixing equipment. The process is troublesome, and the mixing requires a lot of working time;

[0007] 4. Drug mixing and adding equipment: most of the existing dosing equipment is inconvenient to fix the position of the spray head, and the spraying angle is limited, which is not conducive to the comprehensive purification of polluted soil; most of the existing dosing equipment for repairing polluted soil is to mix the chemical oxidant with the water body completely , and then transported to the dosing equipment through a series of measures, and then the dosing equipment sprays the internal oxidant on the polluted soil to have a chemical reaction with it. However, the existing dosing equipment is limited in size and cannot accommodate too much chemical oxidant at one time. New chemical oxidants need to be added back and forth to continue working, which is time-consuming, labor-intensive, low-efficiency, and increases the labor intensity of the staff

[0008] 5. Mixing equipment: When the mixer is running, there will be a lot of dust particles brought out from the outlet. Because the soil is polluting, it will bring considerable pollution to the environment, and even harm the surrounding area. The health of personnel; 2. The height of the mixer is high, it is inconvenient to maintain when a failure occurs, and manual climbing is easy to fall, which is not safe enough

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