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Soil remediation adsorption net and remediation method thereof

A technology of soil remediation and adsorption net, applied in the field of attapulgite materials, can solve the problems of slow adsorption speed, wide application limitation, low adsorption capacity, etc., achieve the effect of reducing leaching concentration, simple repair method, and repair soil pollution

Inactive Publication Date: 2016-11-16
安徽金联地矿科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, commonly used adsorption materials include activated carbon, activated alumina and ion exchange resins. Although they can effectively adsorb various pollutants, due to their low adsorption capacity, slow adsorption speed and poor mechanical stability, etc. , which limits its wide application
[0004] At present, the technology of combining exchange fiber and attapulgite materials to restore and treat soil cannot be satisfied in the existing technology. In order to meet the further needs of the existing situation for soil restoration, a solution is now provided

Method used

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  • Soil remediation adsorption net and remediation method thereof
  • Soil remediation adsorption net and remediation method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] A kind of soil restoration adsorption net, see figure 1 , figure 2 , comprising a mesh plate 1, the mesh plate 1 is made into a block of 1.5m*1.5m by adsorption material, and pressed into a wave shape; the thickness of the mesh plate 1 is 5mm, and strip-shaped filter holes 101 are evenly distributed on its surface , the strip-shaped filter hole 101 forms an inclination angle of 15 degrees with the wave folding edge of the screen plate 1; the adsorption material is made by adding attapulgite powder with a particle size of 350 mm by ion exchange fiber at a weight ratio of 4:1.5;

[0017] The preparation method of ion exchange fiber is as follows: add 4.5kg of ethylene glycol and 2.5kg of ethylenediamine to 3.22kg of polyvinyl alcohol fiber in sequence, and reflux reaction for 1 hour under stirring to obtain an intermediate product; after washing the intermediate product with water, add 1.5kg of ethylenediamine A mixed solution of diol, 6.75kg of aminopyridine and 1.25kg...

Embodiment 2

[0020] A kind of adsorption net for soil restoration, comprising a net plate 1, the net plate 1 is pressed into a strip shape of 2m*1m by adsorption material; The filter hole 101 forms an inclination angle of 10 degrees with the wavy hem of the mesh plate 1; the adsorption material is made by adding the attapulgite powder into the ion exchange fiber at a weight ratio of 2:1; the preparation method of the ion exchange fiber is the same as in Example 1.

[0021] The adsorption net prepared above was buried in the soil with a depth of 15 cm for 15 days, adsorbed and exchanged, and then removed from the soil.

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Abstract

The invention discloses a soil remediation adsorption net and a remediation method thereof. The soil remediation adsorption net comprises a net plate. The net plate is formed by pressing an adsorption material and is in a wave shape. The thickness of the net plate is 2-5 mm. Strip-shaped filter holes are evenly formed and distributed in the surface of the net plate. An inclination angle of 10-15 degrees is formed between each strip-shaped filter hole and a corresponding wavy folded edge of the net plate. The adsorption material is prepared from ion exchange fibers and attapulgite powder, wherein the weight ratio of the ion exchange fibers to the attapulgite powder is 2-4:1-1.5. The remediation method comprises the step that the adsorption net is embedded into the soil with the depth being 15-25 cm for 15-30 days. The adsorption net is prepared from the attapulgite powder and the exchange fibers and applied to government and remediation of soil pollution. The remediation method is simple and fast and suitable for industrial production. Harmful substances in the soil can be removed permanently through adsorption and exchange, the purpose of remedying soil pollution is achieved, the leaching concentration of the harmful substances in the soil is lowered, and the mobility and poisoning degree of heavy metal in the soil are reduced.

Description

technical field [0001] The invention belongs to the technical field of attapulgite materials, and relates to a soil repair adsorption net and a repair method thereof. Background technique [0002] Soil pollution has the characteristics of poor mobility, long residence time, and irreversibility of pollutants in the soil, resulting in decreased soil fertility, reduced crop yield and quality, and polluted groundwater and surface water through runoff and leaching. [0003] Adsorption filtration is an important technology in the current deep purification of soil. At present, commonly used adsorption materials include activated carbon, activated alumina and ion exchange resins. Although they can effectively adsorb various pollutants, due to their low adsorption capacity, slow adsorption speed and poor mechanical stability, etc. , which limits its wide application. [0004] At present, the technology of combining exchange fiber and attapulgite materials to restore and treat soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
CPCB09C1/08B09C2101/00
Inventor 秦月琴任飞孙忠伟明桂林吴海东王前张传琦牛杏杏王赞王代飞
Owner 安徽金联地矿科技有限公司
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