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Soil remediation agent and preparation method thereof

A soil remediation agent and rice husk technology, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve the problems of weak heavy metal migration ability, increased crop absorption, and reduced bioavailability, so as to alleviate the toxic effect , Improve compaction and reduce activity

Inactive Publication Date: 2019-09-13
YUNNAN GREEN LAND BIOLOGICAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the mineralization and decomposition of the amendment, it may lead to the re-release of the adsorbed heavy metal ions, which will increase the absorption of the crops. Therefore, the use of chemical methods alone has a certain risk of soil remediation.
Microorganisms can change the pH value and physical and chemical structure of soil through metabolic decomposition, affect the root secretion of crops, change the migration and transformation form of heavy metals in the soil environment, and reduce their bioavailability, thus playing a certain repairing role, but most The ability of microorganisms to migrate heavy metals is weak, and most soil remediation agents are fertilizers, which can easily cause soil compaction

Method used

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  • Soil remediation agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] A soil remediation agent, comprising the following components in parts by weight: 150 parts of rice husk straw, 100 parts of white clover, 50 parts of biochar, 50 parts of bentonite, 40 parts of zeolite, 5 parts of fungus and Bacillus subtilis 5 parts of Bacillus, 10 parts of Potassium Fulvic Acid.

[0022] The above-mentioned zeolites are calcined modified zeolites.

[0023] The preparation method of soil remediation agent comprises the following steps:

[0024] (1) Add potassium fulvate to deionized water and dissolve it into a potassium fulvate solution with a concentration of 0.05g / ml, and divide the volume of the solution into 5 parts; Keep at a temperature of 24 hours to obtain a solution of Bacillus subtilis; add 2 parts of the solution and Bacillus subtilis to deionized water; and keep at a temperature of 35°C for 24 hours to obtain a solution of Bacillus subtilis;

[0025] (2) After drying the rice husk straw and white clover grass, crush the two to a particl...

Embodiment 2

[0028] A soil remediation agent, comprising the following components in parts by weight: 200 parts of rice husk straw, 150 parts of white clover, 100 parts of biochar, 80 parts of bentonite, 60 parts of zeolite, 10 parts of fungus fungus, and Bacillus subtilis 10 parts of Bacillus, 20 parts of Potassium Fulvic Acid.

[0029] The above-mentioned zeolites are calcined modified zeolites.

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

[0031] (1) Potassium fulvate was dissolved in deionized water to form a potassium fulvate solution with a concentration of 0.03g / ml, and the volume of the solution was equally divided into 5 parts; 3 parts of the solution were mixed with the fungus, and heated at 35°C Keep at a temperature of 24 hours to obtain a solution of Bacillus subtilis; add 2 parts of the solution and Bacillus subtilis to deionized water; and keep at a temperature of 35°C for 24 hours to obtain a solution of Bacillus subtilis;

[0...

Embodiment 3

[0035] A soil remediation agent, comprising the following components in parts by weight: 180 parts of rice husk straw, 130 parts of white clover, 80 parts of biochar, 60 parts of bentonite, 50 parts of zeolite, 8 parts of fungus, and Bacillus subtilis 8 parts of Bacillus, 15 parts of Potassium Fulvic Acid.

[0036] The above-mentioned zeolites are calcined modified zeolites.

[0037] The preparation method of soil remediation agent comprises the following steps:

[0038] (1) Add potassium fulvate to deionized water and dissolve it into a potassium fulvate solution with a concentration of 0.05g / ml, and divide the volume of the solution into 5 parts; Keep at a temperature of 24 hours to obtain a solution of Bacillus subtilis; add 2 parts of the solution and Bacillus subtilis to deionized water; and keep at a temperature of 35°C for 24 hours to obtain a solution of Bacillus subtilis;

[0039] (2) After drying the rice husk straw and white clover grass, crush the two to a partic...

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Abstract

The invention discloses a soil remediation agent and a preparation method thereof, and belongs to the field of soil improvement. The soil remediation agent includes rice husk straws, Trifolium repens,biochar, bentonite, zeolite, Gibberella, Bacillus subtilis and potassium fulate. The biochar, zeolite and bentonite in the invention have certain adsorption effects on heavy metal ions, so the concentration of heavy metal ions on the surface of soil is reduced, and the damages of the heavy metal ions to plants are prevented; and the Gibberella and Bacillus subtilis can improve the distribution structure of microorganisms in the soil, so the permeability of soil is improved, metal ions are fixed, and soil hardening is improved. The soil remediation agent can also provide organic matters, enhance the soil aggregate structure and improve the manurial effect of soil in order to achieve rapid and efficient soil remediation.

Description

technical field [0001] The invention relates to the field of soil improvement, in particular to a soil repair agent and a preparation method thereof. Background technique [0002] The extensive development of various ore resources and the vigorous development of industry and agriculture have caused damage to the soil to a certain extent, causing changes in the heavy metal content in the soil, organic matter in the soil and microbial populations, affecting the growth of crops, soil The environment has been severely damaged. Soil improvement is also being carried out continuously. At present, soil improvement generally includes soil improvement method, physical method, chemical method, electrothermal method and microbial method. Among them, the chemical method is to use chemical agents to produce chemical reactions. It is the passivation of heavy metal ions in the soil, reducing their activity, reducing the harm to ecology and the environment, and achieving the purpose of pol...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 吴迪曾蓉周学进杜河万肖建辉任小娇
Owner YUNNAN GREEN LAND BIOLOGICAL TECH
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