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A method for soil compound heavy metal pollution control and resource utilization

A pollution control and heavy metal technology, applied in the field of environmental pollution control, can solve the problems that the research has not yet been carried out, and the research is rarely reported, and achieve the effects of high desorption efficiency, rapid enrichment and concentration, and precise separation

Active Publication Date: 2018-11-20
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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Problems solved by technology

[0005] In addition, there are many studies on the treatment of heavy metals in soil, but there are few reports on the treatment of heavy metals in soil and resource recovery, especially the research on heavy metals in soil with high efficiency, low cost, and no secondary pollution. carry out

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  • A method for soil compound heavy metal pollution control and resource utilization

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Embodiment Construction

[0028] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0029] Such as figure 1 Shown, a kind of soil composite heavy metal pollution control and resource utilization method of the present invention comprises the steps:

[0030] 1) Adding adsorption materials: adding magnetic adsorption materials to the soil polluted by heavy metals, and mixing the magnetic adsorption materials with the soil, so that the heavy metals in the soil can migrate to the magnetic adsorption materials, so as to realize the separation of heavy metals from the soil;

[0031] 2) Magnetic separation: use multi-stage magnetic separation to separate and collect saturated magnetic adsorption materials from the soil, so as to achieve the restoration and treatment of soil contaminated by heavy metals;

[0032] 3) Desorption of the adsorption material: put the saturated magnetic adsorption material into the desorption stirring equipmen...

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Abstract

The invention relates to a soil compound heavy metal pollution treatment and resource recovery method, comprising the following steps: 1) adding adsorption materials; 2) magnetic separation; 3) desorption of the adsorption materials; 4) one-time adjustment of the desorption liquid; Secondary adjustment of desorption liquid; 6) supergravity centrifugal extraction of heavy metals; 7) free flow electrophoresis; the present invention has the advantages of diverse types of heavy metals, high removal efficiency, and no secondary pollution, and can accurately separate and recycle complex heavy metals , which can be applied to in-situ remediation or ex-situ remediation of heavy metal-contaminated soils.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a soil composite heavy metal pollution control and resource recovery method. Background technique [0002] Heavy metal is a typical pollutant, and its main sources are 1) industrial production, especially mining and smelting industries release a large amount of heavy metal pollutants to the environment; 2) biochemical waste, waste containing heavy metals can seep into soil and water; 3) Agricultural production, harmful substances in fertilizers and pesticides release heavy metals. Heavy metals pollute water bodies and soils, causing serious harm to animals and plants. In particular, heavy metals in polluted soil are not easy to remove, resulting in heavy metals in crops seriously exceeding the standard, enriched through the food chain and transferred to the human body, endangering human health. [0003] Due to the seriousness of heavy metal-contaminated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00C22B7/00
CPCB09C1/00C22B7/005Y02P10/20
Inventor 张功多安路阳张立涛刘睿王守凯
Owner SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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