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Arsenic pollution soil repair agent

A technology for soil remediation and arsenic pollution, applied in the field of soil remediation, can solve problems such as secondary pollution, prominent environmental risks, polluted environment, backward technology and technology, etc., and achieve the effect of reducing the content of effective arsenic, good effect and low dosage

Inactive Publication Date: 2017-04-26
ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing solidification and stabilization treatment technology for arsenic-contaminated soil is relatively backward, and the solidification and stabilization agents are expensive and pollute the environment, resulting in low efficiency and high cost of solidification and stabilization of arsenic-contaminated soil, secondary pollution and environmental risks.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the embodiment of the present invention, an arsenic-contaminated soil remediation agent is composed of the following raw materials in parts by mass: 12 parts of Cercis gigantea, 4 parts of Eucheuma intricately, 7 parts of diatomaceous earth, and 25 parts of sunflower straw.

[0021] The preparation method of the arsenic-contaminated soil remediation agent comprises the following steps:

[0022] (1) After the diatomite is pulverized to 30 mesh first, and then ultrafinely pulverized to 15 μm, diatomite powder is obtained;

[0023] (2) Drying the stalks of Eutheria gigantea, Eucheuma intricately and sunflower straw respectively, and pulverizing them to 120 meshes to obtain powder of Eutheria gigantea, Eucheuma intricately and sunflower straw;

[0024] (3) Add sunflower straw powder to 7 times the mass of water and soak for 3 hours, then use a microwave with a power of 320W for 3 minutes, filter to obtain sunflower straw liquid and sunflower straw residue, and sunflower ...

Embodiment 2

[0029] In the embodiment of the present invention, an arsenic-contaminated soil remediation agent is composed of the following raw materials in parts by mass: 15 parts of C. gigantea, 5 parts of Eucheuma tangerina, 4 parts of diatomaceous earth, and 20 parts of sunflower stalks.

[0030] The preparation method of the arsenic-contaminated soil remediation agent comprises the following steps:

[0031] (1) After the diatomite is first pulverized to 50 meshes, and then ultrafinely pulverized to 18 μm, diatomite powder is obtained;

[0032] (2) drying the stalks of Eutheria gigantea, Eucheuma intricately and sunflower straw respectively, and pulverizing them to 150 meshes to obtain powder of Eutheria gigantea, Eucheuma intricately and sunflower straw;

[0033] (3) Add sunflower straw powder to 8 times the mass of water and soak for 4 hours, then use a microwave with a power of 340W for 4 minutes, and filter to obtain sunflower straw liquid and sunflower straw residue, and the sunfl...

Embodiment 3

[0038] In the embodiment of the present invention, an arsenic-contaminated soil remediation agent is composed of the following raw materials in terms of parts by mass: 13 parts of Cercis gigantea, 4.33 parts of Eucheuma intricately, 6 parts of diatomaceous earth, and 24 parts of sunflower straw.

[0039] The preparation method of the arsenic-contaminated soil remediation agent comprises the following steps:

[0040] (1) After the diatomite is first pulverized to 30 meshes, and then ultrafinely pulverized to 18 μm, diatomite powder is obtained;

[0041] (2) Drying the stalks of Eutheria gigantea, Eucheuma intricately and sunflower straw respectively, and pulverizing them to 120 meshes to obtain powder of Eutheria gigantea, Eucheuma intricately and sunflower straw;

[0042] (3) Add sunflower stalk powder to 8 times its mass and soak in water for 3 hours, then use a microwave with a power of 340W for 3 minutes, filter to obtain sunflower stalk liquid and sunflower stalk residue, ...

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PUM

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Abstract

The invention discloses an arsenic pollution soil repair agent. The repair agent comprises the following raw materials, by mass, of 12-15 parts of giant uronemaconfervicolum, 4-5 parts of eucheuma perplexum, 3-8 parts of diatomite and 15-30 parts of sunflower straw, wherein the mass ratio of the giant uronemaconfervicolum to the eucheuma perplexum is 3:1. The diatomite is smashed, and diatomite powder is obtained. The giant uronemaconfervicolum, the eucheuma perplexum and the sunflower straw are dried and smashed to powder separately. Water is added into sunflower straw powder to conduct soaking, microwave treatment and filtering, and sunflower straw liquid and sunflower straw residues are obtained, and the sunflower straw liquid is subjected to decompressing concentration to be a sunflower straw extracting solution. The sunflower straw residues are calcinated, and the calcinated sunflower straw is obtained. The sunflower straw extracting solution is mixed with the diatomite powder, giant uronemaconfervicolum powder and eucheuma perplexum powder, and mixture slurry is obtained. The calcinated sunflower straw is placed in the mixture slurry to conduct soaking treatment, and the arsenic pollution soil repair agent is obtained. The arsenic pollution soil repair agent has the advantages of being little in dosage, low in cost, good in effect and free from pollution.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to an arsenic-contaminated soil remediation agent. Background technique [0002] Arsenic is widely used in many industries, and a large amount of arsenic remains in the soil through mining, processing, use, and disposal. According to the National Soil Pollution Survey Bulletin, the rate of arsenic pollution points exceeding the standard reached 2.7%. With the acceleration of urbanization and industrialization, more and more land is polluted by arsenic; the strategic layout of cities has been readjusted, and a large number of arsenic-polluted sites are in urgent need of treatment. Soil arsenic pollution is concealed, hysteresis and long-term, and it is difficult to repair. When arsenic accumulates in the soil to a certain extent, arsenic and arsenic compounds can generally enter the human body through water, air and food, and directly endanger human health. The toxicity o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 不公告发明人
Owner ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD