CN112646585A - Arsenic-polluted soil remediation material and preparation method thereof - Google Patents

Arsenic-polluted soil remediation material and preparation method thereof Download PDF

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CN112646585A
CN112646585A CN202110097056.3A CN202110097056A CN112646585A CN 112646585 A CN112646585 A CN 112646585A CN 202110097056 A CN202110097056 A CN 202110097056A CN 112646585 A CN112646585 A CN 112646585A
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arsenic
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soil remediation
calcium
remediation material
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张剑宇
吴春江
张旭钏
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Jiangsu Longchang Chemical Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
    • C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2101/00—Agricultural use
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
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  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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Abstract

The invention relates to an arsenic-polluted soil remediation material, which has the innovation points that: the repairing agent comprises a pH value regulator and a repairing agent, wherein the repairing agent comprises biomass carbon, attapulgite, an iron-based compound and calcium-aluminum hydrotalcite, and the repairing agent comprises the following raw materials in parts by weight: 10-15% of attapulgite, 20-25% of medical stone, 20-30% of iron-based compound and 25-35% of calcium-aluminum hydrotalcite. The pH value regulator is SiO2Not less than 60% of Al2O3Maifanitum powder with content of not less than 15%. The arsenic-polluted soil remediation material is applied to polluted soil, can automatically adjust the pH value of the soil regardless of acid or alkaline soil, reduce the arsenic activity in the soil environment, improve the activity of arsenic-resistant bacteria, stabilize the soil environment through calcium-aluminum hydrotalcite, and has effects of remedying and improving soil, reducing environmental pollution and improving foodSafe and has obvious effect of improving the crop yield.

Description

Arsenic-polluted soil remediation material and preparation method thereof
Technical Field
The invention relates to the field of remediation of contaminated soil, in particular to an arsenic-contaminated soil remediation material and a preparation method thereof.
Background
Arsenic is a non-metallic element that is widely found in nature and is carcinogenic.
Various activities of human beings, such as mining, smelting, fertilizing, using pesticides, discharging waste water and stacking waste residues, can cause the arsenic content in local soil to rise, the minimum concentration of arsenic which has toxic action on crops is 3mg/L, and the toxicity on aquatic organisms is also high, so that the arsenic pollution becomes one of the environmental problems with serious global harm.
The prior patent CN 101879521A discloses a method for treating arsenic-contaminated soil, which comprises the steps of firstly adjusting the pH value of the soil by quicklime, then adding an iron salt solution for stabilization, wherein the method is simple and rapid, the pH value of acidic soil or alkaline soil is adjusted to be 8-10 strong alkalinity by alkaline substances, and then the alkaline solution is used for adjustment and restoration, the strong alkalinity can reduce the effectiveness of soil nutrients, so that subsequent soil malnutrition is caused, moreover, the pH values of soil in south and north farmlands in China are greatly different, the arsenic activity in acidic and alkaline environments is obviously different, and the alkaline substances of the treatment method are obviously not suitable for use.
Disclosure of Invention
The invention aims to provide an arsenic-polluted soil remediation material and a preparation method thereof, and solves the problem of incompatibility of remediation materials caused by great difference of pH values of farmland soil.
In order to solve the technical problems, the technical scheme of the invention is as follows: the arsenic-polluted soil remediation material has the innovation points that: the repairing agent comprises a pH value regulator and a repairing agent, wherein the repairing agent comprises biomass carbon, attapulgite, medical stone, an iron-based compound and calcium-aluminum hydrotalcite, and the repairing agent comprises the following raw materials in parts by weight: 5-10% of biomass carbon, 10-15% of attapulgite, 10-20% of medical stone, 20-30% of iron-based compound and 25-35% of calcium-aluminum hydrotalcite.
Further, the pH value regulator is SiO2Not less than 60% of Al2O3Maifanitum powder with content of not less than 15%.
Further, the purity content of the attapulgite is not less than 65 percent, wherein SiO is2Not less than 45%, MgO not less than 5%, Al2O3Content is not less than 12%, K2The content of O is not less than 3 percent.
Further, Fe in the iron-based compound2O3、FeSO4Not less than 90% of Fe or3O4、FeSO4Not less than 90% of Fe or2O3、FeSO4With Fe3O4The total content is not less than 90%.
Further, the calcium-aluminum hydrotalcite is SO4 2-Or NO3 -Calcium aluminium hydrotalcite of type.
Further, the repairing agent comprises the following raw materials in parts by weight: 10% of biomass carbon, 15% of attapulgite, 20% of medical stone, 20% of iron-based compound and 35% of calcium-aluminum hydrotalcite.
Further, the processing process of the pH value regulator comprises the following steps: the method comprises the following steps of crushing medical stone into blocks of 30-50mm primarily, and processing the blocks into powder of 80-120 meshes by a ball mill, wherein the medical stone comprises the following components in percentage by mass: SiO 2260-65% of Al2O315-20% of K25 to 8 percent of O, 1.5 to 3 percent of MgO, 0.5 to 1.5 percent of CaO and Fe2O31% -3%;
the preparation steps of the repair material are as follows:
(1) premixing raw materials: 2 tons of mixture of biomass carbon, attapulgite, medical stone and calcium-aluminum hydrotalcite in the weight ratio is added into 10m of 6 tons of distilled water3Fully mixing in a reaction kettle, and performing raw material pretreatment by using a differential washing-microfiltration technology;
(2) forced mixing: heating the premixed solution to 90-120 ℃, and stirring for 4-6 hours to form high-suspension shear liquid;
(3) nucleation: the rotating liquid film nano rapid nucleation technology is utilized to rapidly nucleate;
(4) and (3) crystallization: by adopting a supermolecule template method and a molecular self-assembly method, nanoparticles are obtained and are subjected to intercalation assembly, program temperature control dynamic crystallization is performed, crystal nucleus growth is controlled, and the size of the particle size of the nanoparticles is further promoted to be subjected to intercalation assembly molding;
(5) thermal stabilization: preparing a crude repairing material product with the water content of not more than 10% by adopting a combined dynamic drying technology;
(6) and (3) finished product: and (5) putting the iron-based compound and the crude product in the step (5) in the weight ratio into a mixer to be uniformly mixed, and obtaining a finished product.
The invention has the advantages that:
the higher the pH of the soil, the more active the arsenic. At present, heavy metal polluted soil restoration materials at home and abroad are mostly alkaline, and even if the materials are used in acid soil, the pH value of the soil can be increased. In the case of neutral or alkaline soils, the higher the pH value after addition of the remediation material, the stronger the arsenic activity will be. The arsenic-polluted soil remediation material disclosed by the invention is applied to polluted soil, the pH value can be automatically adjusted no matter acid soil or alkaline soil, the pH value is always below 7, and arsenic ions are firmly anchored and solidified through the characteristics of the remediation material disclosed by the invention, so that the arsenic activity in the soil environment is reduced, the activity of arsenic-resistant bacteria is improved, the soil environment is stabilized through calcium-aluminum hydrotalcite, and the arsenic-polluted soil remediation material has obvious effects on remediation and improvement of soil, reduction of environmental pollution, improvement of food safety and improvement of crop yield.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a flow chart of the steps of making the repairing agent of the present invention.
Detailed Description
As shown in figure 1, the arsenic-contaminated soil remediation material comprises a pH value regulator and a remediation agent.
The pH value regulator is SiO2Not less than 60% of Al2O3The content of the medical stone powder is not less than 15 percent, and the raw materials of the repairing agent comprise biomass carbon, attapulgite, medical stone, an iron-based compound and calcium-aluminum hydrotalcite.
The purity content of attapulgite is not less than 65%, wherein SiO2Not less than 45%, MgO not less than 5%, Al2O3Content is not less than 12%, K2The content of O is not less than 3 percent.
Fe in iron-based compounds2O3、FeSO4Not less than 90% of Fe or3O4、FeSO4Not less than 90% of Fe or2O3、FeSO4With Fe3O4The total content is not less than 90%.
Calcium aluminum hydrotalcite is SO4 2-Or NO3 -Calcium aluminium hydrotalcite of type.
The first embodiment is as follows:
the repair material comprises the following raw materials in parts by weight: 10% of biomass carbon, 15% of attapulgite, 20% of medical stone, 20% of iron-based compound and 35% of calcium-aluminum hydrotalcite.
The preparation method of the repair material comprises the following steps:
(1) premixing raw materials: 2 tons of the mixture of the attapulgite, the medical stone and the calcium-aluminum hydrotalcite in the weight ratio is added into 10m of 6 tons of distilled water3Fully mixing in a reaction kettle, and performing raw material pretreatment by using a differential washing-microfiltration technology;
(2) forced mixing: heating the premixed solution to 90-120 ℃, and stirring for 4-6 hours to form high-suspension shear liquid;
(3) nucleation: the rotating liquid film nano rapid nucleation technology is utilized to rapidly nucleate;
(4) and (3) crystallization: by adopting a supermolecule template method and a molecular self-assembly method, nanoparticles are obtained and are subjected to intercalation assembly, program temperature control dynamic crystallization is performed, crystal nucleus growth is controlled, and the size of the particle size of the nanoparticles is further promoted to be subjected to intercalation assembly molding;
(5) thermal stabilization: preparing a crude repairing material product with the water content of not more than 10% by adopting a combined dynamic drying technology;
(1) and (3) finished product: and (5) putting the iron-based compound and the crude product in the step (5) in the weight ratio into a mixer to be uniformly mixed, and obtaining a finished product.
Figure BDA0002914365700000051
Example two:
the repair material comprises the following raw materials in parts by weight: 10% of biomass carbon, 13% of attapulgite, 23% of medical stone, 20% of iron-based compound and 34% of calcium-aluminum hydrotalcite.
The preparation method of the repair material comprises the following steps:
(1) premixing raw materials: 2 tons of mixture of biomass carbon, attapulgite, medical stone and calcium-aluminum hydrotalcite in the weight ratio is added into 10m of 6 tons of distilled water3Fully mixing in a reaction kettle, and performing raw material pretreatment by using a differential washing-microfiltration technology;
(2) forced mixing: heating the premixed solution to 90-120 ℃, and stirring for 4-6 hours to form high-suspension shear liquid;
(3) nucleation: the rotating liquid film nano rapid nucleation technology is utilized to rapidly nucleate;
(4) and (3) crystallization: by adopting a supermolecule template method and a molecular self-assembly method, nanoparticles are obtained and are subjected to intercalation assembly, program temperature control dynamic crystallization is performed, crystal nucleus growth is controlled, and the size of the particle size of the nanoparticles is further promoted to be subjected to intercalation assembly molding;
(5) thermal stabilization: preparing a crude repairing material product with the water content of not more than 10% by adopting a combined dynamic drying technology;
(6) and (3) finished product: and (5) putting the iron-based compound and the crude product in the step (5) in the weight ratio into a mixer to be uniformly mixed, and obtaining a finished product.
Figure BDA0002914365700000061
According to the test results of the first embodiment and the second embodiment, the arsenic-polluted soil remediation material disclosed by the invention can be suitable for acidic and alkaline soil, automatically adjusts the pH value, reduces the arsenic content in the soil environment, and meets the national soil heavy metal safety standard.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. An arsenic-contaminated soil remediation material, which is characterized in that: the repairing agent comprises a pH value regulator and a repairing agent, wherein the repairing agent comprises biomass carbon, attapulgite, medical stone, an iron-based compound and calcium-aluminum hydrotalcite, and the repairing agent comprises the following raw materials in parts by weight: 5-10% of biomass carbon, 10-15% of attapulgite, 10-20% of medical stone, 20-30% of iron-based compound and 25-35% of calcium-aluminum hydrotalcite.
2. The arsenic-contaminated soil remediation material of claim 1, wherein: the pH value regulator is SiO2Not less than 60% of Al2O3Maifanitum powder with content of not less than 15%.
3. The arsenic-contaminated soil remediation material of claim 1, wherein: the biomass carbon is prepared by utilizing agricultural wastes such as straws and the like through drying, grinding and thermal cracking processes.
4. The arsenic-contaminated soil remediation material of claim 1, wherein: the purity of the attapulgite is not less than 65%, wherein SiO is2Not less than 45%, MgO not less than 5%, Al2O3Content is not less than 12%, K2The content of O is not less than 3 percent.
5. The arsenic-contaminated soil remediation material of claim 1, wherein: fe in the iron-based compound2O3、FeSO4Not less than 90% of Fe or3O4、FeSO4Not less than 90% of Fe or2O3、FeSO4With Fe3O4The total content is not less than 90%.
6. The arsenic-contaminated soil remediation material of claim 4, wherein: the calcium-aluminum hydrotalcite is SO4 2-Or NO3 -Calcium aluminium hydrotalcite of type.
7. The arsenic-contaminated soil remediation material of claim 1, wherein: the arsenic-polluted soil remediation material is a non-metallic mineral nano composite material and is prepared through the processes of raw material premixing, forced mixing, nucleation, crystallization, thermal stabilization and finished product preparation.
8. The arsenic-contaminated soil remediation material of claim 1, wherein: the repairing agent comprises the following raw materials in parts by weight: 10% of biomass carbon, 15% of attapulgite, 20% of medical stone, 20% of iron-based compound and 35% of calcium-aluminum hydrotalcite.
9. The method for preparing the arsenic-contaminated soil remediation material as claimed in claim 1, wherein: the processing process of the pH value regulator comprises the following steps: the method comprises the following steps of crushing medical stone into blocks of 30-50mm primarily, and processing the blocks into powder of 80-120 meshes by a ball mill, wherein the medical stone comprises the following components in percentage by mass: SiO 2260-65% of Al2O315-20%, K25 to 8 percent of O, 1.5 to 3 percent of MgO, 0.5 to 1.5 percent of CaO and Fe2O31% -3%;
the preparation steps of the repair material are as follows:
(1) premixing raw materials: 2 tons of mixture of biomass carbon, attapulgite, medical stone and calcium-aluminum hydrotalcite in the weight ratio is added into 10m of 6 tons of distilled water3Fully mixing in a reaction kettle, and performing raw material pretreatment by using a differential washing-microfiltration technology;
(2) forced mixing: heating the pretreated mixed solution to 90-120 ℃, and stirring for 4-6 hours to form high-suspension shear liquid;
(3) nucleation: rapidly nucleating the high-suspension shear liquid in the step two by utilizing a rotating liquid film nano rapid nucleation technology;
(4) and (3) crystallization: by adopting a supermolecule template method and a molecular self-assembly method, nanoparticles are obtained and are subjected to intercalation assembly, program temperature control dynamic crystallization is performed, crystal nucleus growth is controlled, and the size of the particle size of the nanoparticles is further promoted to be subjected to intercalation assembly molding;
(5) thermal stabilization: preparing a crude repairing material product with the water content of not more than 10% by adopting a combined dynamic drying technology;
(6) and (3) finished product: and D, putting the iron-based compound and the crude product obtained in the step five into a mixer according to the weight ratio, and uniformly mixing to obtain a finished product.
CN202110097056.3A 2020-10-10 2021-01-25 Arsenic-polluted soil remediation material and preparation method thereof Pending CN112646585A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114289490A (en) * 2021-12-21 2022-04-08 江苏隆昌化工有限公司 Carbon-fixing material for repairing heavy metal polluted farmland

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115404081A (en) * 2022-07-29 2022-11-29 广西壮族自治区环境保护科学研究院 Passivator for repairing heavy metal lead, zinc and arsenic combined pollution and application

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1579937A (en) * 2003-07-31 2005-02-16 北京化工大学 Method for preparing nano-level magnesium-aluminium hydrotalcite using bittern as raw material
CN102051180A (en) * 2009-10-27 2011-05-11 吕周锋 Conditioner used for protecting soil
CN102764759A (en) * 2012-07-31 2012-11-07 湖南永清环境修复有限公司 Remediation agent for treating arsenic contaminated soil and usage of remediation agent
CN105062495A (en) * 2015-08-17 2015-11-18 深圳市铁汉生态环境股份有限公司 Heavy metal stabilizer
CN106947495A (en) * 2017-04-28 2017-07-14 明光市飞洲新材料有限公司 A kind of efficient soil-repairing agent and preparation method thereof
CN108372202A (en) * 2018-04-03 2018-08-07 格丰科技材料有限公司 A method of the reparation medicament for administering heavy-metal contaminated soil and its improvement heavy-metal contaminated soil
CN109054848A (en) * 2018-07-06 2018-12-21 北京润鸣环境科技有限公司 A kind of heavy-metal contaminated soil renovation agent and preparation method thereof and application method
CN109609134A (en) * 2018-11-07 2019-04-12 河北德龙环境工程股份有限公司 A kind of stabilizing and curing agent and preparation method of As polluted soil and slag
CN109622595A (en) * 2018-12-10 2019-04-16 佛山科学技术学院 A kind of method that charcoal repairs heavy metals in farmland pollution
CN109705873A (en) * 2018-12-27 2019-05-03 武汉瑞景环境修复工程有限公司 Repair cadmium, the passivator in arsenic pollution farmland, preparation method and restorative procedure
CN110144221A (en) * 2019-04-28 2019-08-20 北京建工环境修复股份有限公司 A kind of modifying agent and its preparation method and application
CN110878210A (en) * 2019-11-29 2020-03-13 云南平海新材料科技有限公司 Nano active mineral soil heavy metal solidification repair liquid
CN111154493A (en) * 2019-12-26 2020-05-15 湖南省和清环境科技有限公司 Soil remediation agent formula for cadmium-arsenic polluted rice planting and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004321887A (en) * 2003-04-22 2004-11-18 Kyowa Chem Ind Co Ltd Decontamination method for contaminated soil
JP5448380B2 (en) * 2008-07-17 2014-03-19 株式会社大林組 Arsenic-contaminated soil treatment material
CN107159703B (en) * 2017-06-14 2020-04-07 甘肃华昱环境检测技术服务有限公司 Arsenic-polluted soil remediation agent and application thereof
CN110437845A (en) * 2019-09-04 2019-11-12 北京沐源华泽环境工程有限公司 Heavy metal polluted soil of farmland renovation agent and its application method

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1579937A (en) * 2003-07-31 2005-02-16 北京化工大学 Method for preparing nano-level magnesium-aluminium hydrotalcite using bittern as raw material
CN102051180A (en) * 2009-10-27 2011-05-11 吕周锋 Conditioner used for protecting soil
CN102764759A (en) * 2012-07-31 2012-11-07 湖南永清环境修复有限公司 Remediation agent for treating arsenic contaminated soil and usage of remediation agent
CN105062495A (en) * 2015-08-17 2015-11-18 深圳市铁汉生态环境股份有限公司 Heavy metal stabilizer
CN106947495A (en) * 2017-04-28 2017-07-14 明光市飞洲新材料有限公司 A kind of efficient soil-repairing agent and preparation method thereof
CN108372202A (en) * 2018-04-03 2018-08-07 格丰科技材料有限公司 A method of the reparation medicament for administering heavy-metal contaminated soil and its improvement heavy-metal contaminated soil
CN109054848A (en) * 2018-07-06 2018-12-21 北京润鸣环境科技有限公司 A kind of heavy-metal contaminated soil renovation agent and preparation method thereof and application method
CN109609134A (en) * 2018-11-07 2019-04-12 河北德龙环境工程股份有限公司 A kind of stabilizing and curing agent and preparation method of As polluted soil and slag
CN109622595A (en) * 2018-12-10 2019-04-16 佛山科学技术学院 A kind of method that charcoal repairs heavy metals in farmland pollution
CN109705873A (en) * 2018-12-27 2019-05-03 武汉瑞景环境修复工程有限公司 Repair cadmium, the passivator in arsenic pollution farmland, preparation method and restorative procedure
CN110144221A (en) * 2019-04-28 2019-08-20 北京建工环境修复股份有限公司 A kind of modifying agent and its preparation method and application
CN110878210A (en) * 2019-11-29 2020-03-13 云南平海新材料科技有限公司 Nano active mineral soil heavy metal solidification repair liquid
CN111154493A (en) * 2019-12-26 2020-05-15 湖南省和清环境科技有限公司 Soil remediation agent formula for cadmium-arsenic polluted rice planting and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
郑水林: "《非金属矿加工技术与应用手册》", 31 May 2005, 冶金工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114289490A (en) * 2021-12-21 2022-04-08 江苏隆昌化工有限公司 Carbon-fixing material for repairing heavy metal polluted farmland

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