Soil remediation method based on modified attapulgite clay

A technology of soil remediation and soil remediation agent, which is applied in the restoration of polluted soil, etc. It can solve the problems of poor treatment effect, inability to remediate soil, and inability to contain metal ions, etc., to achieve fast adsorption rate, promote plant production, and improve water retention. and the effect of fat retention

Inactive Publication Date: 2019-08-13
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a soil remediation method based on modified attapulgite, which solves the problem that metal ions cannot be treated well, the treatment effect is poor, and the soil cannot be well repaired. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0025] S1. Take the attapulgite raw material, crush the attapulgite through the crushing equipment, then add dilute ammonia water, dioctyl sebacate solution, carbon-based materials and repair fluid, and add dilute ammonia water with a mass fraction of 0.8-1.0%, seb The mass fraction of dioctyl ester solution is 1.0-1.2%, the mass fraction of carbon-based materials is 0.8-1.5%, and the mass fraction of repair fluid is 0.2-0.3%. The ammonia water added here is diluted ammonia water, mainly Avoid the alkalinization of the soil by ammonia water;

[0026] S2. Add dilute ammonia water in S1 with a mass fraction of 0.8-1.0%, a dioctyl sebacate solution with a mass fraction of 1.0-1.2%, a carbon-based material with a mass fraction of 0.8-1.5%, and a repair solution with a mass fraction Put 0.2-0.3% into the mixer, mix it through the mixer, filter it through the filter equipment, soak it in the zinc acetate solution for 12-20 hours, finally filter the liquid, and then put it into the d...

no. 2 example

[0040] S1. Take the attapulgite raw material, crush the attapulgite through the crushing equipment, then add dilute ammonia water, dioctyl sebacate solution, carbon-based materials and repair fluid, and add dilute ammonia water with a mass fraction of 0.8-1.0%, seb The mass fraction of dioctyl ester solution is 1.0-1.2%, the mass fraction of carbon-based materials is 2-5%, and the mass fraction of repair fluid is 1-2%, generally containing more than 60% of carbon elements; it is rich in Pore ​​structure, large specific surface area and more oxygen-containing active groups on the surface, has excellent physical and chemical properties, can adsorb and desorb various atoms and molecules, effectively solve the problem of pores, and solve the problem of deposition on the substrate. lots of folds;

[0041] S2. Add dilute ammonia water in S1 with a mass fraction of 0.8-1.0%, a dioctyl sebacate solution with a mass fraction of 1.0-1.2%, a carbon-based material with a mass fraction of ...

no. 3 example

[0047] S1. Take the attapulgite raw material, crush the attapulgite through the crushing equipment, then add dilute ammonia water, dioctyl sebacate solution, carbon-based materials and repair fluid, and add dilute ammonia water with a mass fraction of 0.8-1.0%, seb The mass fraction of dioctyl ester solution is 1.0-1.2%, the mass fraction of carbon-based material is 5-10%, and the mass fraction of restoration fluid is 1-3%, which can improve the physical and chemical properties of soil, enhance the compressive strength of soil, and improve At the same time, the water retention capacity can indirectly affect the microorganisms in the soil. Among them, fly ash uses its own magnetic properties to change the activity of some bacterial enzymes, while biochar provides growth and reproduction places for microorganisms with its unique pore structure. To achieve the purpose of soil restoration and governance;

[0048] S2. Add dilute ammonia water in S1 with a mass fraction of 0.8-1.0%,...

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Abstract

The invention discloses a soil remediation method based on modified attapulgite clay. The method comprises the following steps of S1, sampling attapulgite clay raw materials, smashing the attapulgiteclay through a smashing device, and then, adding diluted ammonium hydroxide, a dioctyl sebacate solution, a carbon base material and a remediation solution, wherein the addition mass percentage of diluted ammonium hydroxide is 0.8-1.0%, the addition mass percentage of the dioctyl sebacate solution is 1.0-1.2%, the addition mass percentage of the carbon base material is 0.8-1.5%, and the addition mass percentage of the remediation solution is 0.2-0.3%. The invention relates to the technical field of soil remediation. According to the soil remediation method based on modified attapulgite clay, the modified attapulgite clay is adopted as a soil remediation agent, a layer which is high in adsorption capability, high in adoration rate and capable of effectively adsorbing heavy metal ions in soil can be formed below a contaminated soil layer, the soil remediation solution is sprayed, plants grow to have deep roots and luxuriant leaves, chlorophyll is enhanced, nutrients are abundant, and normal juice and normal taste are recovered; soil contaminations are reduced, and the method is low in carbon and environmentally friendly and no water or fertilizer soil is lost.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil remediation method based on modified attapulgite. Background technique [0002] Soil remediation is a technical measure to restore the normal function of polluted soil. In the soil remediation industry, there are more than one hundred existing soil remediation technologies, and there are more than ten commonly used technologies, which can be roughly divided into three methods: physical, chemical and biological. Since the 1980s, many countries in the world, especially developed countries, have formulated and carried out contaminated soil treatment and restoration plans, so a new soil restoration industry has also formed. Attapulgite, the abbreviation of attapulgite clay, is a kind of Non-metallic mineral resources, it is a layer chain structure of water-containing magnesium-aluminosilicate clay minerals, "attapulgite clay" is a non-metallic mineral resource, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/08
CPCB09C1/00B09C1/08B09C2101/00
Inventor 胡涛胡星翱胡星翔丁师杰杨勇钱运华汪玉祥翟茜
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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