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Acidic multifunctional soil improver and preparation method thereof

A soil improvement and multi-functional technology, applied in the field of environmental restoration, can solve problems such as single and limited improvement effect, short duration, limited reserves, etc., achieve the effect of improving mechanical structure and properties, increasing soil organic matter and fertility, and solving degradation problems

Active Publication Date: 2016-05-25
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, most of the currently researched materials are mainly inorganic materials such as calcium gypsum, phosphogypsum, zeolite, fly ash, sludge, green manure, and other natural material modifiers. The mixed formula of one or more natural material modifiers has a single and limited improvement effect. , short duration, limited reserves, etc.

Method used

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  • Acidic multifunctional soil improver and preparation method thereof
  • Acidic multifunctional soil improver and preparation method thereof
  • Acidic multifunctional soil improver and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of acidic multifunctional soil conditioner, preparation steps are as follows:

[0025] (1) According to the mass fraction, after diluting 20 parts of concentrated hydrochloric acid and 80 parts of distilled water on site in proportion, add 15 parts of ferrous sulfate heptahydrate and 2 parts of potassium permanganate in the three-necked flask, mix and dissolve, and heat up to 45 After 1°C, keep the temperature constant for 1h;

[0026] (2) At normal temperature, after dissolving 100 parts of sodium lignosulfonate in 70 parts of distilled water, add 1 part of tributyl phosphate, stir and add the solution of step (1);

[0027] (3) Adjust the pH of the mixed solution to 4.0 with 20% NaOH, raise the temperature to 75 degrees Celsius, keep it for 40 minutes, add 10 parts of sodium phosphate, cool to room temperature, and seal it for storage.

Embodiment 2

[0028] Embodiment 2: a kind of acidic multifunctional soil conditioner, preparation steps are as follows:

[0029] (1) According to the mass fraction, after diluting 20 parts of concentrated hydrochloric acid and 85 parts of distilled water on site in proportion, add 15 parts of ferrous sulfate heptahydrate and 2.5 parts of potassium permanganate in the three-necked flask, mix and dissolve, and heat up to 45 After 1°C, keep the temperature constant for 1h;

[0030] (2) At normal temperature, after dissolving 100 parts of sodium lignosulfonate in 75 parts of distilled water, add 1.5 parts of polyoxypropylene glyceryl ether, stir well and then add the solution of step (1);

[0031] (3) Use 20% NaOH to adjust the pH of the mixed solution to 4.5, raise the temperature to 75 degrees Celsius, keep it for 40 minutes, add 15 parts of sodium tripolyphosphate, cool to room temperature, and seal it for storage.

Embodiment 3

[0032] Embodiment 3: an acidic multifunctional soil conditioner, the preparation steps are as follows:

[0033] (1) According to the mass fraction, after diluting 20 parts of concentrated hydrochloric acid and 90 parts of distilled water on site in proportion, add 20 parts of ferrous sulfate heptahydrate and 3 parts of potassium permanganate in the three-necked flask, mix and dissolve, and heat up to 45 After 1°C, keep the temperature constant for 1h;

[0034] (2) At normal temperature, after dissolving 100 parts of sodium lignosulfonate in 80 parts of distilled water, add 2 parts of polydimethylsiloxane, stir well and then add the solution of step (1);

[0035] (3) Use 20% NaOH to adjust the pH of the mixed solution to 4.5, raise the temperature to 75 degrees Celsius, keep for 40 minutes, add 20 parts of sodium pyrophosphate, cool to room temperature, and seal it for storage.

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Abstract

The invention discloses an acidic multifunctional soil improver and a preparation method thereof, wherein the acidic multifunctional soil improver is prepared from the following raw materials by the mass fraction: 20 parts of concentrated hydrochloric acid, 13-20 parts of ferrous sulfate, 2-3 parts of potassium permanganate, 100 parts of lignosulfonate, 1-2 parts of a defoaming agent, 10-20 parts of phosphate, 150-170 parts of distilled water, and a proper amount of an alkaline solution. The acidic multifunctional soil improver can reduce the alkalinity of soil, improves the soil organic matter content, is chelated with heavy metals in the soil, increases the cation exchange capacity of the soil, promotes plant growth, and promotes metabolism of microorganisms. The soil improving stabilizing agent has the advantages of easily available materials, low production cost, environmental friendliness, biological degradation, no secondary pollution, good water solubility, difficult volatilization and the like.

Description

technical field [0001] The invention relates to an acidic multifunctional soil conditioner and a preparation method thereof, belonging to the technical field of environmental restoration. Background technique [0002] With the continuous development of economy and society, the problem of soil degradation has become increasingly prominent, mainly manifested in soil salinization, element imbalance, chemical pollution, loss of organic matter and degradation of flora and fauna, etc., which seriously limit the development of land productivity. [0003] Saline-alkali soil is widely distributed on the earth, with a total of about 955 million hm 2 , distributed in arid regions of all continents, mainly concentrated in Eurasia, Africa, and western America. Due to different geographical locations and different climatic conditions, the distribution of saline-alkali land in different countries and regions is also very different. The most widely distributed are Australia, the former So...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00C09K109/00
Inventor 祝建中何敏霞陈立朱晓强吉栋梁
Owner HOHAI UNIV
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