Elution and restoration device for heavy metal contaminated soil and restoration and treatment method of heavy metal contaminated soil

Abstract

The invention discloses an elution and restoration device for heavy metal contaminated soil. The elution and restoration device comprises a machine frame, a driving device, a crushing device and a soil elution device, wherein the crushing device comprises a crushing rotating cylinder and a crushing mechanism arranged inside the crushing rotating cylinder, the crushing rotating cylinder is transversely arranged and is rotationally arranged on the machine frame, the soil elution device is arranged right below the crushing rotating cylinder, crushed soil particles are transited into the soil elution device through a feeding and discharging port, moreover, an elution solvent is contained in the soil elution device, and the soil elution device is used for eluting and restoring the soil particles. According to the elution and restoration device for the heavy metal contaminated soil and a restoration and treatment method of the heavy metal contaminated soil, the soil particles can be fully crushed, the soil particles can be timely eluted and repaired, and the restoration degree of soil elution restoration can be improved.

Description

technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to an eluting and remediating device for heavy metal polluted soil and a remediation treatment method thereof. Background technique [0002] Soil pollution is one of the most serious environmental problems facing human society, and the remediation of contaminated soil has become a hot spot in the field of environmental remediation. Existing soil remediation technologies mainly include thermal desorption technology, electrodynamic remediation, biological remediation, solidification and stabilization remediation and soil leaching remediation. Among them, soil leaching remediation of heavy metal-contaminated soil is due to its rapid remediation, wide adaptability and thorough remediation. It has been widely studied and applied to actual restoration projects because of its characteristics, and has broad market space and development prospects. [0003] At present, the leachin...

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Problems solved by technology

Inorganic eluent is a method of eluting heavy metals from soil through the ion exchange of water, inorganic acid, and inorganic salt solution. Fully broken soil and full mixing of soil and elution solvent are the key to elution repair, which directly affect the degree of elution repair. However, in the current soil elution repair process, it is necessary to separate the soil particles between different equipment It takes a long period of time for multiple transfers, and at the same time, after the broken soil is not eluted and repaired in time and accumulated for a long time, the degree of soil repair will also be reduced.

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