Preparation method of soil remediation agent for remediating arsenic contaminated soil

A soil remediation agent, arsenic pollution technology, applied in the field of passivation of heavy metals, can solve problems such as hidden health risks, crop yield reduction, and residual

Inactive Publication Date: 2018-03-16
林良兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, heavy metal pollution in soil has become a problem that cannot be ignored. These heavy metal pollution will not only lead to cr

Method used

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  • Preparation method of soil remediation agent for remediating arsenic contaminated soil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of a soil remediation agent for remediating arsenic-contaminated soil, comprising the steps of:

[0035] (1) At a temperature of 55°C, dry the wheat straw, wheat straw, corngrass and emperor bamboo grass until the water content of the wheat straw, wheat straw, corn grass and emperor bamboo grass is ≤20%;

[0036] Wherein, the mass ratio of wheat straw, wheat straw, corn grass and emperor bamboo grass is 1:1:2:3;

[0037] (2) Grinding the dried wheat straw, wheat straw, corngrass, and emperor bamboo grass into particles with a particle size of 10mm, and then mixing them uniformly to form a mixture;

[0038] (3) Mix the mixture, manure, EM bacteria and water at a mass ratio of 10:1:0.1:1, and then ferment anaerobically at a temperature of 50°C for 32 hours to obtain the first raw material;

[0039] Then raise the temperature of the first raw material to 90°C, keep it warm for 10 minutes, and then cool down to 30°C;

[0040] (4) The first raw materia...

Embodiment 2

[0049] A preparation method of a soil remediation agent for remediating arsenic-contaminated soil, comprising the steps of:

[0050] (1) At a temperature of 60°C, dry the wheat straw, wheat straw, corngrass and emperor bamboo grass until the moisture content of the wheat straw, wheat straw, corn grass and emperor bamboo grass is ≤20%;

[0051] Wherein, the mass ratio of wheat straw, wheat straw, corn grass and emperor bamboo grass is 1:1:2:3;

[0052] (2) Grinding the dried wheat straw, wheat straw, corngrass, and emperor bamboo grass into particles with a particle size of 5 mm, and then mixing them uniformly to form a mixture;

[0053] (3) Mix the mixture, manure, EM bacteria and water at a mass ratio of 10:1:0.1:1, and then ferment anaerobically at a temperature of 50°C for 35 hours to obtain the first raw material;

[0054] Then raise the temperature of the first raw material to 90°C, keep it warm for 10 minutes, and then cool down to 30°C;

[0055] (4) The first raw materi...

Embodiment 3

[0064] A method for preparing a soil remediation agent for remediating arsenic-contaminated soil, characterized in that it comprises the following steps:

[0065] (1) At a temperature of 60°C, dry the wheat straw, wheat straw, corngrass and emperor bamboo grass until the moisture content of the wheat straw, wheat straw, corn grass and emperor bamboo grass is ≤20%;

[0066] Wherein, the mass ratio of wheat straw, wheat straw, corn grass and emperor bamboo grass is 1:1:2:3;

[0067] (2) Grinding the dried wheat straw, wheat straw, corngrass, and emperor bamboo grass into particles with a particle size of 9 mm, and then mixing them uniformly to form a mixture;

[0068] (3) Mix the mixture, manure, EM bacteria and water in a mass ratio of 10:1:0.1:1, and then ferment anaerobically at a temperature of 52°C for 31 hours to obtain the first raw material;

[0069] Then raise the temperature of the first raw material to 90°C, keep it warm for 7 minutes, and then cool it down to 25°C; ...

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Abstract

The invention discloses a preparation method of a soil remediation agent for remediating arsenic contaminated soil. Firstly, the selected wheat straws, teosinte and pennisetum hydridum are high in yield and low in price, and lots of plant fibers can be provided, so that soil nutrients can be effectively fixed; secondly, the wheat straws, teosinte and pennisetum hydridum are mixed with EM bacteriaand animal manure, and nutrients which are easily absorbed by plants are formed by adopting an anaerobic fermentation method, so that the yield of the crops can be greatly improved; and thirdly, zeolite, fly ash, coal cinder and kaolin are matched with one another, so that metal arsenic in the soil can be effectively adsorbed, and the effect of reducing the arsenic content in the soil is further achieved.

Description

technical field [0001] The invention relates to a passivation heavy metal, in particular to a preparation method of a soil restoration agent for repairing arsenic-polluted soil. Background technique [0002] With the rapid development of economy and industry, the extensive application of chemical fertilizers and pesticides, the exploitation of mines and oil fields, and the discharge of enterprises such as petrochemical, pesticide and pharmaceutical production have led to the continuous deterioration of soil pollution. Among them, heavy metal pollution in soil has become a problem that cannot be ignored. These heavy metal pollution will not only lead to crop yield reduction, but also remain in agricultural products, and then enter the human body, causing major hidden dangers to people's health. Contents of the invention [0003] It is an object of the present invention to solve at least the above-mentioned problems and to provide at least the advantages which will be descri...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G5/00C05F17/00C05G3/80
CPCC05D1/00C05F17/50C05G3/00C05G3/80C05D9/00C05F3/00C05F11/00C05F11/02C05F11/08Y02W30/40
Inventor 林良兵
Owner 林良兵
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