In-situ soil remediation device utilizing solar energy and construction method thereof

Abstract

The invention discloses an in-situ soil remediation device utilizing solar energy and a construction method for the same. The device is spliced by multiple separate assembly units; the part, close to the ground, of the whole device is black; each separate assembly unit comprises enclosed inflation cavities; each inflation cavity is in anchoring connection with the ground; the bottom of each inflation cavity is connected with a black plastic cloth which is laid on the ground and is provided with a grid opening; and the top of each inflation cavity is connected with a transparent plastic cloth which is laid on the ground and is provided with a grind opening. The in-situ soil remediation device can absorb solar energy to the greatest extent, and can heat air in the device. Based on a flue effect in the construction and the Bernoulli's effect formed by horizontal air streams on the top end of the construction, upward air streams are formed in the construction, and upward air streams in shallow soil are driven, so that alternate nonequilibrium state transportation of organic pollutants in the soil is caused, and diffusion of the organic pollutants to soil air is caused; and the solar energy and barometric pressure energy are fully utilized, so that the pollutants in the soil and shallow underground water are effectively removed.

Description

technical field [0001] The invention belongs to the technical field of soil restoration, and relates to an in-situ soil restoration device utilizing solar energy and a construction method thereof. Background technique [0002] In recent years, with the rapid development of society and economy, and the continuous progress of my country's industrial and agricultural technology, environmental problems have become increasingly prominent. Soil pollution in our country is becoming more and more serious, and the pollution of organic matter is particularly serious and relatively harmful. Organic pollutants in soil can cause numerous hazards, including the inhibition of animals, plants and microorganisms in the soil ecosystem, the harmful effects on human health, and so on. When the human body directly contacts the polluted soil, it can cause adverse reactions in sensory and physiological functions, reduce the body's resistance, and be accompanied by an increase in the incidence and...

AI Technical Summary

Problems solved by technology

[0010] 1. Using the most common ex-situ restoration method, the polluted soil needs to be excavated and then processed. This method generally has high construction costs

[0011] 2. For the ectopic repair method, it is difficult to manage the excavated contaminated soil, which is likely to cause secondary pollution

[0012] 3. Ectopic repair methods generally involve chemical and biological treatments, and the cost of reagents is high

Some treatment methods use heating, and the corresponding energy costs are high

In the above reference, solar energy is used for ex situ heating to repair, but the energy consumption required for thermal desorption is very high. If solar energy is used to achieve this purpose, very large area solar panels are required, and the cost will be very high

[0013] 4. Using the in-situ repair method can save the cost of excavation construction, but most of the in-situ repair methods require continuous power supply or other energy input, so the operating cost is relatively high

[0014] 5. Most of the in-situ repair methods require the construction of some permanent facilities, such as the cement floor for operation, installed pumps and pipelines, etc., and the corresponding costs are relatively high

[0015] 6. Most of the in-situ soil remediation methods require drilling and construction of extraction wells, which are very costly

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