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Soil compound heavy metal pollution regulation and recycling method

A technology for pollution control and heavy metals, applied in the field of environmental pollution control, can solve problems such as few reports and undeveloped research, and achieve the effects of high desorption efficiency, rapid enrichment and concentration, and reduction of treatment costs.

Active Publication Date: 2017-02-15
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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  • Abstract
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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

Method used

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  • Soil compound heavy metal pollution regulation and recycling method

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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] like 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 equipment, ...

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Abstract

The invention relates to a soil compound heavy metal pollution regulation and recycling method. The method includes the following steps that (1) an adsorbing material is put; (2) magnetic separation is carried out; (3) adsorbing material desorbing is carried out; (4) primary adjustment of desorbing liquid is carried out; (5) sheet frame filtering and secondary adjustment of the desorbing liquid are carried out; (6) supergravity heavy metal centrifugal extraction is carried out; and (7) free flow electrophoresis is carried out. The soil compound heavy metal pollution regulation and recycling method has the beneficial effects that heavy metal treatment type diversification is achieved, the removal rate is high, and secondary pollution is avoided; compound heavy metal can be accurately separated and recovered; and the method can be applied to in-situ remediation or out-situ remediation of heavy metal polluted soil.

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 Applications(China)
IPC IPC(8): C22B7/00B09C1/00
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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