Contaminated soil-underground water integrated remediation system

Abstract

The invention discloses a contaminated soil-underground water integrated remediation system. The system comprises a soil crushing treatment device, a leaching stabilizing device and a sludge dewatering device which are connected in sequence; the soil crushing treatment device comprises a cylinder body, a feeding hopper and a discharging opening; a first crushing cutter, a second crushing cutter and a high-pressure spraying head are arranged outside a rotating shaft in the cylinder body from top to bottom, and a compressed air inlet is formed in the side surface of the cylinder body between thefirst crushing cutter and the second crushing cutter; a stirring shaft and a crushing shaft are arranged in the cylinder body below the high-pressure spray head; an infrared radiation device is arranged at the periphery of the discharge hole; the remediated soil subjected to infrared radiation treatment enters a collecting tank to form slurry with underground water, the slurry is pumped to a leaching stabilizing device to be subjected to heavy metal stabilizing treatment, and then the slurry is introduced into a sludge dewatering device. The system provided by the invention can realize integrated efficient remediation of polluted underground water and polluted soil, especially organic matter-heavy metal composite polluted soil and underground water, and has a good application prospect.

Description

technical field [0001] The invention relates to a polluted soil treatment technology, in particular to a polluted soil-groundwater integrated restoration system. Background technique [0002] With the rapid development of urban industrialization, industrial and agricultural pollution of urban soil and groundwater has gradually become serious. The soil structure and ecological environment have been severely damaged, and the quality of groundwater has deteriorated. This will not only affect agricultural production, but also bring huge impacts on human beings and the ecological environment. Therefore, soil remediation is an important task to be solved urgently. There are many ways to remediate contaminated soil, mainly including physical remediation, chemical remediation and biological remediation. Soil leaching technology, as one of the important technical means of chemical remediation methods, can be used not only to remediate heavy metal-contaminated soil, but also to remed...

AI Technical Summary

Problems solved by technology

However, some existing soil treatment devices often focus on the treatment of heavy metal pollution or organic pollution, and it is difficult to achieve efficient restoration of heavy metal / organic pollution at the same time

[0004] In addition, the area of ​​soil pollution has expanded and the degree of pollution has deepened

However, there is a close relationship between soil and groundwater. Contaminated soil is likely to cause pollution to the underlying groundwater, and it is necessary to treat the polluted soil and groundwater. Contaminated soil and groundwater are treated in one process, which can simplify the treatment process, save treatment costs and save land resources

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