Petroleum-contaminated soil remediation device

Abstract

The invention relates to a petroleum-contaminated soil remediation device. The device comprises a photocatalytic assembly, an ultraviolet lamp set, a soil impregnation unit and a filtering unit. The photocatalytic assembly comprises a water trough, a convex lens arranged on the water trough, and a plurality of parallel partition plates arranged in the water trough in a staggered mode. The surface of the bottom of the water trough is coated with a TiO2 photocatalyst layer. The water trough is provided with a water inlet and a water outlet. The ultraviolet lamp set is hinged to the photocatalytic assembly through a rotary shaft. One end of the filtering unit is connected with the soil impregnation unit, and the other end of the filtering unit is connected with the water inlet.

Description

technical field [0001] The invention relates to a treatment device for petroleum-contaminated soil, which belongs to the technical field of environmental protection. Background technique [0002] The leakage of underground oil storage tanks not only causes soil salinization and poisoning, but also leads to soil damage and waste, and its toxic substances can enter the food chain system through crops, especially groundwater, and eventually directly endanger human beings. Heat treatment is through incineration or calcination, which can purify most of the organic pollutants in the soil, but at the same time, it also destroys the soil structure and components, and is expensive and difficult to implement. [0003] In the prior art, the application publication number is CN105457999A, and the patent discloses a contaminated soil remediation method. The contaminated soil remediation method is to use photocatalyst to mix with polluted soil, and the nano-titanium dioxide powder left in...

AI Technical Summary

Problems solved by technology

[0002] The leakage of underground oil storage tanks not only causes soil salinization and poisoning, but also leads to soil damage and waste, and its toxic substances can enter the food chain system through crops, especially groundwater, and eventually directly endanger human beings.

Heat treatment is through incineration or calcination, which can purify most of the organic pollutants in the soil, but at the same time, it also destroys the soil structure and components, and is expensive and difficult to implement

[0003] In the prior art, the application publication number is CN105457999A, and the patent discloses a contaminated soil remediation method. The contaminated soil remediation method is to use photocatalyst to mix with polluted soil, and the nano-titanium dioxide powder left in the soil can effectively capture the soil Remaining organic pollutants and viruses, but titanium dioxide mixes with the soil, reducing the utilization of light, which in turn leads to lower degradation efficiency

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