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Soil remediation agent, soil remediation material and preparation method

A soil remediation agent and soil remediation technology, applied in the field of environmental protection, can solve problems such as environmental pollution, and achieve the effects of improving the effect, increasing the effect time, and improving local air permeability and water holding capacity

Active Publication Date: 2019-11-22
GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of soil remediation agent, soil remediation material and preparation method, add pyrite slag in the described soil remediation agent, not only utilize pyrite slag to provide carrier, can also solve pyrite slag Environmental pollution problems caused by accumulation

Method used

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  • Soil remediation agent, soil remediation material and preparation method
  • Soil remediation agent, soil remediation material and preparation method
  • Soil remediation agent, soil remediation material and preparation method

Examples

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Effect test

Embodiment 1

[0068] The present embodiment provides a kind of preparation method of soil remediation agent, and described preparation method comprises the steps:

[0069] (1) Mix biochar, vermiculite, zeolite, pyrite slag, attapulgite powder according to the formula, and ball mill to obtain a mixed powder whose particle size D50 is 120 μm. The biochar is coconut shell biochar , the parts by weight are 20 parts, the parts by weight of the vermiculite are 5 parts, the parts by weight of the zeolite are 5 parts, the parts by weight of the pyrite slag are 14 parts, the attapulgite The parts by weight of powder are 22 parts;

[0070] (2) Under vacuum conditions, the equal volume of the mixed powder is impregnated with 3 parts by weight of ammonium carbonate. After drying, it is roasted under a nitrogen atmosphere. The roasting temperature is 750 ° C, and the roasting time is 2 hours to obtain a roasted powder. ;

[0071] (3) After the roasting powder is mixed with the sodium fulvic acid and s...

Embodiment 2

[0073] The present embodiment provides a kind of preparation method of soil remediation agent, and described preparation method comprises the steps:

[0074] (1) Mix biochar, vermiculite, zeolite, pyrite slag, attapulgite powder according to the formula, and ball mill to obtain a mixed powder with a particle size D50 of 60 μm. The biochar is corn stalk biochar , the parts by weight are 15 parts, the parts by weight of the vermiculite are 4 parts, the parts by weight of the zeolite are 4 parts, the parts by weight of the pyrite slag are 12 parts, the attapulgite The parts by weight of powder are 20 parts;

[0075] (2) Under vacuum conditions, the equal volume of the mixed powder is impregnated with 2 parts by weight of ammonium carbonate. After drying, it is roasted under a nitrogen atmosphere. The roasting temperature is 720° C., and the roasting time is 2.5 hours to obtain roasted powder. material;

[0076] (3) After the roasting powder is mixed with potassium fulvic acid a...

Embodiment 3

[0078] The present embodiment provides a kind of preparation method of soil remediation agent, and described preparation method comprises the steps:

[0079] (1) Mix biochar, vermiculite, zeolite, pyrite slag, attapulgite powder according to the formula, and ball mill to obtain a mixed powder whose particle size D50 is 150 μm. The biochar is walnut shell biochar , the parts by weight are 25 parts, the parts by weight of the vermiculite are 6 parts, the parts by weight of the zeolite are 6 parts, the parts by weight of the pyrite slag are 16 parts, the attapulgite The parts by weight of powder are 25 parts;

[0080] (2) Under vacuum conditions, the equal volume of the mixed powder is impregnated with 4 parts by weight of ammonium carbonate. After drying, it is roasted under a nitrogen atmosphere. The roasting temperature is 770° C., and the roasting time is 1.5 hours to obtain roasted powder material;

[0081] (3) After the roasting powder is mixed with sodium fulvic acid and p...

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Abstract

The invention relates to a soil remediation agent, a soil remediation material and a preparation method. The soil remediation agent is prepared from the following raw materials: biomass charcoal, vermiculite, zeolite, pyrite cinder, attapulgite powder, fulvate, ammonium carbonate and an additive. According to the soil remediation agent, through reaction of the biomass charcoal and the pyrite cinder, iron in the pyrite cinder is reduced, Fe < 3 + > and Fe < 2 + > can exchange with Si < 4 + > in zeolite, vermiculite and attapulgite powder, and therefore the cation exchange capacity of the obtained soil remediation agent is improved; moreover, the soil remediation agent can load more nutrient substances, the additive can be slowly released, and the soil remediation material prepared from thesoil remediation agent can effectively improve the air permeability and the water retention rate of soil.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a soil restoration technology, in particular to a soil restoration agent, a soil restoration material and a preparation method. Background technique [0002] Soil is a natural resource that human beings rely on for survival. The composition of soil is three types of substances: solid phase, liquid phase, and gas phase, mainly including minerals, organic matter, water, air, and microorganisms. Healthy soil should include about 45% of minerals, about 25% of air, about 25% of water, about 5% of organic matter and about 1% of microorganisms. However, due to the long-term state of high intensification, high multiple cropping index, and high input of fertilizers, crop cultivation on the soil has caused a series of soil obstacles such as crop yield decline, soil secondary salinization, soil acidification, and nutrient imbalance. [0003] Soil treatment methods mainly incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08
CPCB09C1/08C09K17/40
Inventor 胡静龄麻永红刘勇胡小吐钟璐杨颖欣
Owner GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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