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Treatment and repair particle and treatment and repair method for multiple heavy metal pollutants of soil

A technology for heavy metals and pollutants, applied in the field of agricultural soil treatment, can solve problems such as small scope of application, high cost, and complicated operation, and achieve the effect of taking into account economic and environmental benefits, ensuring sustainable use, and simple operation

Inactive Publication Date: 2016-07-13
侯力玮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The invention aims at the problems of high cost, high toxicity, easy residue, small scope of application, complicated operation, secondary pollution and damage to the soil micro-ecological environment existing in the current treatment and restoration of heavy metal pollution in soil. Chemical in-situ fixed oxidation of soil and microbial joint treatment and remediation Remediation of various heavy metal pollutants in soil Particles and treatment and remediation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The treatment and restoration granules for various heavy metal pollutants in the soil described in Embodiment 1 of the present invention are mainly composed of an oxidizing compound agent and an inorganic gelling material, wherein the oxidizing compound agent is: potassium ferrate, chlorine dioxide, Various mixtures of oxidizing agents such as sodium peroxide and sodium persulfate; the inorganic gelling material is powdery air-hardening or hydraulically hardening inorganic gelling material. The oxidizing compound agent is mixed with the inorganic gelling material according to the ratio of mass fraction 1:5, and after mixing, in a vacuum environment, it is shaken by a vibrating sieve to form particles with a particle size of 5mm, and then in a negative pressure atmosphere full of ozone, The screened granules are hermetically packaged in water-soluble capsules, and the water-soluble capsules are heated to cause local heat-melt shrinkage of the water-soluble capsules, and t...

Embodiment 2

[0046] The treatment and repair particles of various heavy metal pollutants in the soil described in the second embodiment of the present invention are different from the first embodiment in that their components are mainly composed of an oxidative compound agent and an inorganic gelling material, wherein the oxidative compound The medicament is: a mixture of various oxidizing agents such as potassium ferrate, chlorine dioxide, sodium peroxide, and sodium persulfate; wherein the inorganic gelling material is a powdered air-hardening or hydraulic inorganic gelling material, and the oxidizing composite agent It is mixed with inorganic gelling material according to the mass fraction ratio of 1:20. After mixing, it is shaken by a vibrating sieve to form particles with a particle size of 6 mm, and then the screened particles are packed in water-soluble capsules.

[0047] The inorganic gel material is selected from zeolite or cement.

[0048] The oxidizing compound agent is a powder...

Embodiment 3

[0050] The treatment and repair particles of various heavy metal pollutants in the soil described in Embodiment 3 of the present invention differ from Embodiment 1 in that its composition is mainly composed of an oxidizing composite agent and an inorganic gelling material, wherein the oxidizing composite The medicament is: various mixtures of oxidants such as potassium ferrate, chlorine dioxide, sodium peroxide, and sodium persulfate; the inorganic gelling material is a powdery air-hardening or hydraulic inorganic gelling material, and the potassium ferrate and The inorganic gelling material is mixed according to the mass fraction ratio of 1:40, and after mixing, it is shaken by a vibrating sieve to form particles with a particle size of 8 mm, and then the screened particles are packed in water-soluble capsules.

[0051] The inorganic gel material is preferably gypsum powder.

[0052] The oxidizing compound agent is powder, and the particle size of the powder is 350 mesh.

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Abstract

The invention discloses a treatment and repair particle for multiple heavy metal pollutants of soil. The treatment and repair particle is mainly formed by mixing an oxide compound medicament and an inorganic cementing material. A treatment and repair method for the multiple heavy metal pollutants of the soil comprises the following concrete steps of (a) mixing the oxide compound medicament and the inorganic cementing material according to the mass ratio of 1:5 to 50; (b) vibrating through a vibrating screen to form particles with the particle size being 5 to 10mm after mixing; (c) sealing and packaging the screened particles through water-soluble capsules, heating the water-soluble capsules to enable the water-soluble capsules to melt and shrink locally, and then cooling to the room temperature. The treatment and repair particle and the treatment and repair method provided by the invention has the efficacy of no toxicity, no residue, no teratogenicity, no mutation, no secondary pollution, and multiple functions. The method provided by the invention is simple and time and labor saving to operate, does not break original planting habits of farmers, is not affected by soil environment, soil desertification, PH value and weather conditions, and is stronger in practicability. The particle and the method balance both economic benefit and environment benefit, and can be fully applied in various heavy metal pollution soil treatment and repair in large scale.

Description

technical field [0001] The invention relates to treatment and restoration particles and a treatment and restoration method for various heavy metal pollutants in soil, which belong to the technical field of agricultural soil treatment. Background technique [0002] In recent years, due to population growth and rapid industrial development, solid waste has been continuously piled and dumped on the soil surface, harmful wastewater has continued to seep into the soil, exhaust gas from automobiles, harmful gases and dust in the atmosphere have continued to fall into the soil with rain. The improvement of the level of agricultural chemistry has caused a large amount of chemical fertilizers and pesticides to be scattered into the environment, resulting in more and more opportunities for soil to be polluted by non-point sources, and the degree is becoming more and more serious; under the influence of soil erosion and wind erosion, etc., The area of ​​pollution continues to expand. ...

Claims

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Application Information

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IPC IPC(8): C09K17/04C09K17/06C09K17/08C09K17/10B09C1/08B09C1/10
CPCC09K17/04B09C1/08B09C1/10C09K17/06C09K17/08C09K17/10
Inventor 侯力玮魏钰方
Owner 侯力玮
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