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Nano-material repairing agent restoring heavy-metal polluted soil and restoring method using same

A technology of polluting soil and nanomaterials, which is applied in the field of soil pollution treatment, can solve problems such as heavy metal pollution, achieve good coordination, obvious effect, and not easy to secondary pollution

Inactive Publication Date: 2014-10-29
苏州中科慧盛生物科技有限公司
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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, that is, to solve the heavy metal pollution problem in the current soil, at the same time, based on the advantages of nanomaterials with high specific surface area, high reactivity and strong adsorption characteristics, the purpose of the present invention is to provide a nano Material Restoration Agent and Restoration Method

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  • Nano-material repairing agent restoring heavy-metal polluted soil and restoring method using same

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[0011] Example: A heavy metal contaminated soil site in Jiangxi Province

[0012]

[0013] The soil area of ​​the example is 20m 2 In order to avoid large errors or inaccuracy in the results obtained, three pieces of soil were selected respectively, the same amount of remediation agent was applied, and their average value was taken after measuring the results. The composition of the repair agent is as follows: 70% by volume of nano-hydroxyapatite (nHA) with a particle size of 27nm and a purity of 98%, 15% by volume with a particle size of 10nm, spherical nano-grade zero-valent iron (nZVI ) Granules and 15% by volume of pure oleic acid.

[0014] Remediation of heavy metal contaminated soil was carried out according to the mass ratio of the remediation agent to the soil of 1:10000. The detection is carried out in stages. When the reaction time is 7 days, the adsorption rates of Pb and Cd have reached 50.8% and 37.6%; when the reaction time is 30 days, the adsorption rates of Pb and ...

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Abstract

The invention discloses a nano-material repairing agent restoring heavy-metal polluted soil and a restoring method using the same, and belongs to the technical field of soil pollution processing. The nano-material repairing agent restoring heavy-metal polluted soil is prepared by mixing the following substances: 60-70% by volume of nano hydroxyapatite (nHA) with the particle size of 27 nm and the purity of 98%, 10-20% by volume of nanoscale zero-valent iron (nZVI) with the particle size of 10 nm and in the shape of a ball, and 10-30% by volume of pure oleic acid. The invention also comprises the restoring method for heavy-metal polluted soil by using the above repairing agent. The method comprises the following step: applying the repairing agent to soil according to the mass ratio of 1:10000-15000. The nano-material repairing agent used to restore heavy-metal polluted soil comprises the characteristics of obvious restoring effect and no secondary pollution.

Description

Technical field [0001] The invention relates to the technical field of soil pollution treatment, in particular to a nano-material repairing agent for repairing heavy metal contaminated soil and a repairing method thereof. Background technique [0002] Soil is one of the main natural resources for human survival, and it is also an important part of the human ecological environment. With the rapid economic development, one of the accompanying negative effects is that pollutants containing heavy metals enter the soil through various channels, resulting in the enrichment of corresponding heavy metal elements in the soil. Soil pollution not only affects the yield and quality of agricultural products, but also involves the quality of the atmosphere and water environment, and can endanger the lives and health of animals and humans through the food chain. In other words, soil pollution affects the quality of the entire human living environment. At present, according to statistics, the a...

Claims

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Application Information

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IPC IPC(8): B09C1/08
Inventor 夏金华
Owner 苏州中科慧盛生物科技有限公司
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