Ex-situ leaching remediation device suitable for remediation of cohesive soil pollution and remediation method
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A technology for pollution remediation and cohesive soil, applied in the restoration of polluted soil, water pollutants, chemical instruments and methods, etc.
Pending Publication Date: 2019-03-22
SHANGHAI ACADEMY OF ENVIRONMENTAL SCIENCES +1
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[0006] The purpose of the present invention is to provide an ectopic leaching repair device and repair method suitable for the restoration of cohesive soil pollution in view of the shortcomings of the existing soil ectopic leaching technology in the restoration of cohesive soil pollution
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Embodiment 1
[0046] Such as figure 1 As shown, the present invention is an ectopic leaching repair device suitable for cohesive soil pollution repair, which includes soil particle size classification and pulping unit, soil leaching and dehydration unit, wastewater treatment unit, and sludge treatment unit;
[0047]The soil particle size classification and pulping unit includes: a hammer-type wet crusher 1, a slurry tank 3, a cylinder desilter 6 (a horizontally arranged cylindrical drum desilter), a wet vibrating screen 9. Vibrating screen liquid collection tank 10; high-pressure water flushing pipeline (connected to the outlet pipeline of the reuse water constant pressure water supply pump group 24) is set in the feed hopper 2 of the wet crusher; a slurry collection tank 3 is provided below the wet crusher , the slurry collecting tank 3 is provided with a mixer 4 (with motor and stirring paddle), a slurry pump 5; the outlet of the slurry pump 5 is connected with the 6 inlets of the cylinde...
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Abstract
The invention relates to an ex-situ leaching remediation device suitable for remediation of cohesive soil pollution and a remediation method. The ex-situ leaching remediation device comprises a soil particle size grading and pulping unit, a leaching and dewatering unit, a wastewater treatment unit, a sludge treatment unit, an auxiliary constant pressure water supply unit and an auxiliary medicament allocation unit, wherein the soil particle size grading and pulping unit is composed of a wet crusher, a slurry collecting tank, a roller mud decomposing machine, a wet vibrating screen, a liquid collecting tank and the like, and the leaching and dewatering unit is composed of a leaching tank, a slurry concentration basin, a centrifugal dehydrator and the like; and the wastewater treatment unitis composed of a wastewater reaction combination tank, a wastewater sedimentation tank and the like, and the sludge treatment unit is composed of a sludge storage basin, a filter press and the like. The remediation method comprises the steps of crushing, pulping, screening, leaching, concentration, dehydration, and matching steps of wastewater treatment, sludge treatment, water supply, dosing andthe like. The ex-situ leaching remediation device and the remediation method are mainly suitable for the remediation of various heavy metal, organic or compound polluted soils including cohesive soils, and have the advantages of wide application range, stable remediation effect, simple operation and running, high wastewater recycling rate and the like.
Description
technical field [0001] The invention belongs to the technical field of site pollution remediation, and in particular relates to an ectopic leaching repair device and a repair method that can be applied to remediation of various heavy metals, organic or compound polluted soils including cohesive soils. Background technique [0002] Soil is the basic environmental element that constitutes the natural ecosystem, and it is also the material basis for the survival and development of human beings. With the intensification of the impact of human activities on the natural environment, pollutants produced in the production and life of people may enter the soil through various channels, and exceed the capacity of the soil itself to accommodate and purify, resulting in soil natural dysfunction and deterioration of soil quality The problem of soil pollution, which in turn may have serious adverse effects on nearby human bodies and the surrounding environment. Therefore, it is necessary...
Claims
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