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Method for restoring DDT and heavy metal chromium combined pollution soil simultaneously

A technology of compound pollution and DDT is applied in the field of remediation of polluted soil, which can solve the problems of carcinogenicity, teratogenicity, and influence on the survival and health of people, and achieves the effect of simple operation and low cost.

Inactive Publication Date: 2018-02-09
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because organochlorine and heavy metal pollutants have carcinogenic, mutagenic and mutagenic effects, if these polluted sites or surrounding soil are directly used as residential, school or public facility land, it will definitely affect the survival and health of the population

Method used

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  • Method for restoring DDT and heavy metal chromium combined pollution soil simultaneously
  • Method for restoring DDT and heavy metal chromium combined pollution soil simultaneously
  • Method for restoring DDT and heavy metal chromium combined pollution soil simultaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Soil remediation agent Fe 78 Si 9 B 13 Preparation of Amorphous Alloy Powder: Preparation of Fe by Mechanical Alloying Technology 78 Si 9 B 13 Amorphous alloy powder, all equipment is a star ball mill. (1) The elemental raw materials used in the test are Fe, Si and B powders, the particle size is 200 mesh, and the purity is not less than 99.99% (mass percentage). Stainless steel was selected as the ball milling medium. Three kinds of stainless steel balls were used in the test, namely 800 stainless steel balls with a radius of 2 mm, 500 stainless steel balls with a radius of 6 mm, and 10 stainless steel balls with a radius of 8 mm. (2) Put the accurately weighed Fe, Si and B powders into the ball mill pot, then put the above stainless steel balls into the ball mill pot, and seal the ball mill pot. Then use a vacuum pump to evacuate and fill it with high-purity argon as a protective gas. Repeat the above steps for 6 times to ensure the purity of the argon in the...

Embodiment 2

[0026] 1. Soil remediation agent Fe 78 Si 9 B 13 Preparation of Amorphous Alloy Powder: Preparation of Fe by Mechanical Alloying Technology 78 Si 9 B 13Amorphous alloy powder, all equipment is a star ball mill. (1) The elemental raw materials used in the test are Fe, Si and B powders, the particle size is 200 mesh, and the purity is not less than 99.99% (mass percentage). Stainless steel was selected as the ball milling medium. Three kinds of stainless steel balls were used in the test, namely 800 stainless steel balls with a radius of 2 mm, 500 stainless steel balls with a radius of 6 mm, and 10 stainless steel balls with a radius of 8 mm. (2) Put the accurately weighed Fe, Si and B powders into the ball mill pot, then put the above stainless steel balls into the ball mill pot, and seal the ball mill pot. Then use a vacuum pump to evacuate and fill it with high-purity argon as a protective gas. Repeat the above steps for 6 times to ensure the purity of the argon in the ...

Embodiment 3

[0031] 1. Soil remediation agent Fe 78 Si 9 B 13 Preparation of Amorphous Alloy Powder: Preparation of Fe by Mechanical Alloying Technology 78 Si 9 B 13 Amorphous alloy powder, all equipment is a star ball mill. (1) The elemental raw materials used in the test are Fe, Si and B powders, the particle size is 200 mesh, and the purity is not less than 99.99% (mass percentage). Stainless steel was selected as the ball milling medium. Three kinds of stainless steel balls were used in the test, namely 800 stainless steel balls with a radius of 2 mm, 500 stainless steel balls with a radius of 6 mm, and 10 stainless steel balls with a radius of 8 mm. (2) Put the accurately weighed Fe, Si and B powders into the ball mill pot, then put the above stainless steel balls into the ball mill pot, and seal the ball mill pot. Then use a vacuum pump to evacuate and fill it with high-purity argon as a protective gas. Repeat the above steps for 6 times to ensure the purity of the argon in the...

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Abstract

The invention discloses a method for restoring DDT and heavy metal chromium combined pollution soil simultaneously, and relates to a method for restoring pollution soil. A combined pollution soil sample is placed into a 250 ml glass bottle, Fe78Si9B13 amorphous alloyed powder is added, then a sodium persulfate solution is added, and mud is formed under the effect that a stirrer rotates 800 rings per minutes; and sampling detection is carried out after reacting is made, a drop of 1 millimoore per liter of tertiary butanol is dropped in to conduct quenching to generate free radicals, and reacting is finished. According to the method, the soil restoration agent Fe78Si9B13 amorphous alloyed powder is prepared; in-situ remediation is carried out on pollution site soil, and different-site remediation is also carried out; the Fe78Si9B13 amorphous alloyed powder has magnetism, and recovery and reutilization can be carried out; and a surface active agent is not added, and therefore secondary pollution on the restored soil can be avoided.

Description

technical field [0001] The invention relates to a method for remediating polluted soil, in particular to a method for simultaneously remediating DDT and heavy metal chromium composite polluted soil. Background technique [0002] The rapid development of industrialization will definitely accelerate the pace of urbanization. However, the development of industrialization and urbanization is inseparable from the huge demand for land, and the layout of industrialization development needs to be coordinated with the layout of urbanization development. As a result, a large number of heavily polluting and high-energy-consuming enterprises located in the central urban area were forced to relocate or close down, resulting in the emergence of a large number of industrially polluted sites in and around the city. According to the incomplete statistics of the Ministry of Environmental Protection, there are currently more than 500,000 industrially polluted sites with an area of ​​more than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 马国峰张鸿龄孙丽娜
Owner SHENYANG UNIV
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