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Soil conditioner and soil improvement method thereof

A soil conditioner and diatomite technology, which can be used in soil preparation methods, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of poor organic and heavy metal treatment results and high production costs, and achieve rich surface functional groups and strong adsorption. Ability, the effect of enriching the pore structure

Inactive Publication Date: 2020-07-28
HONGHEZHOU BRANCH OF YUNNAN TOBACCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a soil improver to make up for the defects of the existing technology, which solves the problems of high production cost and poor treatment effect on organic matter and heavy metals in the existing soil improver

Method used

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  • Soil conditioner and soil improvement method thereof

Examples

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Effect test

Embodiment 1

[0025] A soil conditioner, comprising the following raw materials in parts by weight: 26 parts of diatomaceous earth, 6 parts of polyacrylamide, 5 parts of polyvinyl alcohol, 65 parts of humic acid matrix, 4 parts of composite microbial agent, and hydroxypropyl methyl fiber 8 parts of sodium lauryl sulfate and 5 parts of sodium lauryl sulfate.

[0026] The method for preparing the soil amendment includes the following steps:

[0027] (1) The humic acid matrix is ​​crushed and pretreated with a 4wt% nitric acid solution. The volume of the nitric acid solution added is 25% of the humic acid matrix. The pretreatment method is to stir and mix and place it at room temperature for 2 days, then mix with the compound bacteria Mix to obtain component A;

[0028] (2) Mix diatomaceous earth, polyacrylamide, and polyvinyl alcohol uniformly to obtain a dry powder. Add 70% of the total mass of the dry powder to the dry powder and stir and mix to obtain a wet powder. After the wet powder is granul...

Embodiment 2

[0031] A soil conditioner, comprising the following raw materials in parts by weight: 25 parts of diatomaceous earth, 6 parts of polyacrylamide, 5 parts of polyvinyl alcohol, 60 parts of humic acid matrix, 3 parts of composite microbial agent, and hydroxypropyl methyl fiber 5 parts of sodium lauryl sulfate and 8 parts of sodium lauryl sulfate.

[0032] The method for preparing the soil amendment includes the following steps:

[0033] (1) After crushing the humic acid matrix, pretreat it with a 5wt% nitric acid solution. The volume of the nitric acid solution added is 30% of the humic acid matrix. The pretreatment method is to stir and mix at room temperature for 2 days, and then mix with the compound bacteria Mix to obtain component A;

[0034] (2) Mix diatomaceous earth, polyacrylamide, and polyvinyl alcohol uniformly to obtain a dry powder. Add 80% of the total mass of the dry powder to the dry powder and stir and mix to obtain a wet powder. After granulating the wet powder, Dryi...

Embodiment 3

[0037] A soil conditioner comprising the following raw materials in parts by weight: 30 parts of diatomaceous earth, 5 parts of polyacrylamide, 4 parts of polyvinyl alcohol, 70 parts of humic acid matrix, 5 parts of composite microbial agent, and hydroxypropyl methyl fiber 8 parts of sodium lauryl sulfate and 6 parts of sodium lauryl sulfate.

[0038] The method for preparing the soil amendment includes the following steps:

[0039] (1) The humic acid matrix is ​​crushed and pretreated with a 2wt% nitric acid solution. The volume of the nitric acid solution added is 25% of the humic acid matrix. The pretreatment method is to stir and mix and place at room temperature for 1d, and then mix with the compound bacteria Mix to obtain component A;

[0040] (2) Mix diatomaceous earth, polyacrylamide and polyvinyl alcohol uniformly to obtain a dry powder. Add 60% of the total mass of the dry powder to the dry powder and stir and mix to obtain a wet powder. After granulating the wet powder, ...

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Abstract

The invention provides a soil conditioner. The soil conditioner is prepared from the following raw materials in parts by weight: 20 to 30 parts of diatomite, 5 to 8 parts of polyacrylamide, 4 to 6 parts of polyvinyl alcohol, 50 to 70 parts of humic acid matrix, 3 to 5 parts of compound microbial agent, 5 to 10 parts of hydroxypropyl methyl cellulose and 4 to 8 parts of lauryl sodium sulfate. The diatomite-based porous ceramic particles are prepared by taking diatomite as a matrix, so that the ecological toxicity of organic pollutants can be reduced, the aim of immobilizing the pollutants is fulfilled, the concentration of the organic pollutants in a water-phase solution can be reduced, and the degradation of the organic pollutants by microorganisms is inhibited; in the invention, peat, lignite and weathered coal are used as matrixes, wherein the humic acid matrix is decomposed by bacteria or mould in the composite microbial agent to slowly release humic acid, so that heavy metal ions in soil can be fixed, degradation of organic matters such as pesticides and polycyclic aromatic hydrocarbons can be adsorbed and promoted, and therefore, enrichment and toxic effects of heavy metals inplants can be reduced, and the soil pollution condition can be alleviated.

Description

Technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil amendment and a method for soil improvement. Background technique [0002] With the rapid economic development and frequent industrial and agricultural activities, a large amount of organic chemicals and heavy metals accumulate in the soil. These pollutants usually have a "three causes" effect, which is harmful to human health and the ecological environment. Therefore, the treatment of contaminated soil has become an important environmental problem currently facing. Microbial degradation is an important way to remove organic pollutants. However, the rate of biodegradation is usually limited by the low bioavailability of pollutants. The acidification of the soil will enhance the mobility of heavy metals and increase the risk of heavy metals accumulation in plants. At present, there are two strategies to control soil heavy metal pollution: one is to remove heavy metals...

Claims

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Application Information

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IPC IPC(8): C09K17/40A01B79/00C09K101/00
CPCA01B79/00C09K17/40C09K2101/00
Inventor 付亚丽高松黄坤
Owner HONGHEZHOU BRANCH OF YUNNAN TOBACCO
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