Integrated remediation device for heavy metal contaminated soil

Abstract

The invention discloses an integrated remediation device for heavy metal contaminated soil. The integrated remediation device comprises an elution box, a containing box, a spraying box, a liquid storage box, a drying box and a water collection box. The elution box is of a rectangular box-shaped structure without an upper surface. The upper end of the elution box is provided with the spraying box.The left end and the right end of the spraying box are fixedly provided with clamping edges correspondingly. The bottom face of the spraying box is provided with a plurality of spraying holes which are in same size and are arrayed at equal intervals. The integrated remediation device is internally provided with a filtering box separation device for muddy water, cleanout fluid and soil in the muddywater can be respectively discharged after being separated, the cleanout fluid and the soil in the muddy water are collected easily, and waste cannot be caused; a filtering plate below the containingbox of the device replaces quartz sand, the filtering plate can remove metal substances in the muddy water, the phenomenon that the quartz sand flows out along with the muddy water cannot occur, thewashing effect is relatively good; and the containing box is fixed to the elution box through a fixing plate, mounting and dismounting are convenient, soil can be put in and taken out conveniently, using is convenient, and the device is suitable for being popularized.

Description

technical field [0001] The invention relates to the technical field of an integrated restoration device for heavy metal-contaminated soil, in particular to an integrated restoration device for heavy metal-contaminated soil. Background technique [0002] my country is a large agricultural country, but with serious metal pollution, organic phosphorus in vegetables and other crops exceeds the standard, water body nutrient enrichment, and the pressure brought by heavy metal pollution greatly test the carrying capacity of heavy metals in farmland, and the integrated restoration of heavy metal-contaminated soil The device is a device used to remove heavy metals in the soil. At present, the integrated remediation devices for heavy metal-contaminated soil are divided into two categories: ion adsorption and soil leaching. Among them, column leaching and stacking leaching are the most practical and effective methods for soil leaching. Economical, but this method of soil accumulation and...

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Problems solved by technology

[0003] 1. Soil accumulation leaching is often done by placing a layer of quartz sand and glass beads in the leaching tank, and depositing the soil on the layer of quartz sand and glass beads for cleaning, but some of the soil will turn into muddy water with the cleaning solution during cleaning. The part that flows out and the soil turns into muddy water is not easy to collect, resulting in waste;

[0004] 2. Part of the quartz sand will also flow out when the muddy water flows out during soil washing. After a long time, the quartz sand will become less, resulting in poor cleaning effect, and the soil on the glass beads is not easy to remove, which is inconvenient to use;

[0005] 3. There are also some phenomena that the soil cannot be washed during soil leaching, which leads to the decline of the effect of soil leaching, and the liquid after soil leaching is often discharged directly, which fails to achieve the purpose of circular leaching and utilization. more wasteful

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