A classification treatment method for saline-alkali land

A technology for grading treatment and saline-alkali land, applied in chemical instruments and methods, restoration of polluted soil, and other chemical processes. The degree of salinity and the effect of enhancing adsorption capacity

Inactive Publication Date: 2020-04-28
GUIZHOU KAILIN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of the amendment is relatively high, and its ability to adjust soil pH is low

Method used

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  • A classification treatment method for saline-alkali land
  • A classification treatment method for saline-alkali land
  • A classification treatment method for saline-alkali land

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A graded treatment method for saline-alkali land, comprising the following steps:

[0057] (1) Rectorite pretreatment: use a ball mill to grind rectorite into a fine powder with a fineness of ≤0.05mm, then send it into an ultrasonic device, process it for 20min at an ultrasonic power of 600w, and then send it into a calcination tower with a temperature of 300°C. Calcined at high temperature for 2 hours, cooled and sent to the reaction tank, and then acidified by adding acid for 30 minutes to obtain rectorite powder, the weight ratio of rectorite to acid is 60:10, and the acid is 30% concentration nitric acid;

[0058] (2) Fermentation: send the oil sour, fungal chaff and EM bacterial agent into the fermentation tank and mix evenly, adjust the water content of the mixture to 50%, and control the fermentation temperature to 40°C within 4 days of fermentation, and control the fermentation temperature for the next 8 days At 55°C, the fermentation material was obtained, and...

Embodiment 2

[0064] A graded treatment method for saline-alkali land, comprising the following steps:

[0065](1) Rectorite pretreatment: use a ball mill to grind rectorite into a fine powder with a fineness of ≤0.05mm, then send it into an ultrasonic device, treat it for 40min at an ultrasonic power of 1000w, and then send it into a calcination tower with a temperature of 600°C. Calcined at high temperature for 3 hours, cooled and sent to the reaction tank, and then acidified by adding acid for 100 minutes to obtain rectorite powder, the weight ratio of rectorite to acid is 80:20, and the acid is 30% concentration sulfuric acid;

[0066] (2) Fermentation: send the oil sour, fungal chaff and EM bacterial agent into the fermentation tank and mix them evenly, adjust the water content of the mixture to 60%, and control the fermentation temperature to 50°C within 6 days of fermentation, and control the fermentation temperature for the next 9 days at 70°C to obtain the fermentation material, t...

Embodiment 3

[0072] A graded treatment method for saline-alkali land, comprising the following steps:

[0073] (1) Rectorite pretreatment: use a ball mill to grind rectorite into a fine powder with a fineness of ≤0.05mm, then send it into an ultrasonic device, treat it at an ultrasonic power of 800w for 30min, and then send it into a calcination tower with a temperature of 600°C. Calcined at high temperature for 3 hours, cooled and sent to the reaction tank, and then acidified by adding acid for 80 minutes to obtain rectorite powder, the weight ratio of rectorite to acid is 70:15, and the acid is 35% concentration Nitric acid or 25% sulfuric acid;

[0074] (2) Fermentation: send the oil sour, fungus chaff and EM bacterial agent into the fermentation tank and mix evenly, adjust the water content of the mixture to 55%, within 5 days of fermentation, control the fermentation temperature to 45°C, and then control the fermentation temperature for 10 days The fermentation material was obtained ...

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Abstract

The invention discloses a stage treatment method of saline and alkaline land. The method includes three saline and alkaline land improvement steps that firstly, the saline and alkaline land is treated through ardealite, most of salt in the saline and alkaline land is removed, and the pH value of the saline and alkaline land is decreased; secondly, the saline and alkaline land is treated through rectorite powder, polyaluminium sulfate and polysilicic acid, so that the salt content of the saline and alkaline land is further reduced, and the soil structure of the saline and alkaline land is effectively improved; and thirdly, the saline and alkaline land is treated through fermentation materials, apatite and amino acid amino acid, so that the salt content of the saline and alkaline land is further reduced, and the pH value of soil of the saline and alkaline land is reduced.

Description

technical field [0001] The invention relates to the technical field of improving saline-alkali land, in particular to a graded treatment method for saline-alkali land. Background technique [0002] Saline-alkali land is the general term for salt land and alkaline land. Saline soil mainly refers to salinized soil with high chloride or sulfate content. The soil is alkaline, but the pH value is not necessarily high. Alkaline soil refers to the soil containing carbonate or heavy phosphate, the pH value is high, and the soil is alkaline. The content of organic matter in saline-alkali land is low, the soil fertility is low, the physical and chemical properties are poor, and there are many anions and cations harmful to crops, so it is difficult for crops to promote seedlings. The area of ​​saline-alkali land in the world is 954.38 million hectares, of which 99.13 million hectares are in my country. The formation of alkaline land and alkalized soil in my country is mostly related...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08C09K17/02C09K17/12C09K17/00C09K109/00C09K101/00
Inventor 王国维陈彬蒋俊蕊赵先明廖吉星张志梅
Owner GUIZHOU KAILIN GRP CO LTD
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