Improving agent for repairing contaminated soil and modifying method

Abstract

The invention relates to an improving agent for repairing contaminated soil and a modifying method. The improving agent is obtained through mixing of arbitrary one or more of 1-3 parts of calcium magnesium phosphate fertilizer, 0.5-7 parts of lime and 1.5-12 parts of modified zeolite. The improving agent is mixed with soil, passivation is performed, and planting of Bermuda grass on the soil and other improving methods are adopted to achieve the purpose of contaminated soil repairing. A chemical technology is combined with a plant technology, not only can the soil structure be protected so as to the antimony-contaminated soil in the case of low cost, but also the environment can be beautified.

Description

technical field

[0001] The invention relates to the field of soil restoration and planting, in particular to an improving agent for repairing polluted soil and an improving method. Background technique

[0002] The rapid development of modern industry has increased the world's demand for antimony and its compounds, resulting in large-scale mining and utilization of antimony ore resources, so antimony ore has accumulated a large number of tailings. Due to the lack of effective treatment measures, the tailings piled in the open air will release a large amount of antimony elements under various external effects. These antimony elements affect the health of residents around the mining area through the food chain, and have caused great pollution to the soil environment around the antimony mining area. As the most important antimony producing country in the world, my country is still very weak in the research on epigenetic geochemistry of antimony and the prevention and control o...

Examples

Embodiment 1

[0053] Ingredients: 1g of calcium magnesium phosphate fertilizer, 0.5g of lime, 1.5g of modified zeolite.

[0054] Improvement method:

[0055] 1) Add 2g of improver to every 1kg of soil;

[0056] 2) Mix the amendment with the soil and passivate it;

[0057] 3) After one month of soil passivation, plant bermudagrass on the soil;

[0058] 4) water according to the soil water shortage situation, and keep the soil water content at 60% of the field water holding capacity during its growth;

[0059] 5) When the bermudagrass grows to four months and six months, the soil and bermudagrass are collected respectively for determination.

Embodiment 2

[0061] Ingredients: 1g of calcium magnesium phosphate fertilizer, 0.5g of lime, 1.5g of modified zeolite.

[0062] Improvement method:

[0063] 1) Add 20g of improver to every 1kg of soil;

[0064] 2) Mix the amendment with the soil and passivate it;

[0065] 3) After one month of soil passivation, plant bermudagrass on the soil;

[0066] 4) water according to the soil water shortage situation, and keep the soil water content at 80% of the field water holding capacity during its growth;

[0067] 5) The soil and bermudagrass were collected for measurement when the bermudagrass grew to four and six months respectively.

Embodiment 3

[0069] Ingredients: 1g of calcium magnesium phosphate fertilizer, 0.5g of lime, 1.5g of modified zeolite.

[0070] Improvement method:

[0071] 1) Add 17g of amendment per 1kg of soil;

[0072] 2) Mix the amendment with the soil and passivate it;

[0073] 3) After one month of soil passivation, plant bermudagrass on the soil;

[0074] 4) water according to the soil water shortage situation, and keep the soil water content at 75% of the field water holding capacity during its growth;

[0075] 5) When the bermudagrass grows to four months and six months, the soil and bermudagrass are collected respectively for determination.

technical field

[0001] The invention relates to the field of soil restoration and planting, in particular to an improving agent for repairing polluted soil and an improving method. Background technique

[0002] The rapid development of modern industry has increased the world's demand for antimony and its compounds, resulting in large-scale mining and utilization of antimony ore resources, so antimony ore has accumulated a large number of tailings. Due to the lack of effective treatment measures, the tailings piled in the open air will release a large amount of antimony elements under various external effects. These antimony elements affect the health of residents around the mining area through the food chain, and have caused great pollution to the soil environment around the antimony mining area. As the most important antimony producing country in the world, my country is still very weak in the research on epigenetic geochemistry of antimony and the prevention and control o...

Examples

Embodiment 1

[0053] Ingredients: 1g of calcium magnesium phosphate fertilizer, 0.5g of lime, 1.5g of modified zeolite.

[0054] Improvement method:

[0055] 1) Add 2g of improver to every 1kg of soil;

[0056] 2) Mix the amendment with the soil and passivate it;

[0057] 3) After one month of soil passivation, plant bermudagrass on the soil;

[0058] 4) water according to the soil water shortage situation, and keep the soil water content at 60% of the field water holding capacity during its growth;

[0059] 5) When the bermudagrass grows to four months and six months, the soil and bermudagrass are collected respectively for determination.

Embodiment 2

[0061] Ingredients: 1g of calcium magnesium phosphate fertilizer, 0.5g of lime, 1.5g of modified zeolite.

[0062] Improvement method:

[0063] 1) Add 20g of improver to every 1kg of soil;

[0064] 2) Mix the amendment with the soil and passivate it;

[0065] 3) After one month of soil passivation, plant bermudagrass on the soil;

[0066] 4) water according to the soil water shortage situation, and keep the soil water content at 80% of the field water holding capacity during its growth;

[0067] 5) The soil and bermudagrass were collected for measurement when the bermudagrass grew to four and six months respectively.

Embodiment 3

[0069] Ingredients: 1g of calcium magnesium phosphate fertilizer, 0.5g of lime, 1.5g of modified zeolite.

[0070] Improvement method:

[0071] 1) Add 17g of amendment per 1kg of soil;

[0072] 2) Mix the amendment with the soil and passivate it;

[0073] 3) After one month of soil passivation, plant bermudagrass on the soil;

[0074] 4) water according to the soil water shortage situation, and keep the soil water content at 75% of the field water holding capacity during its growth;

[0075] 5) When the bermudagrass grows to four months and six months, the soil and bermudagrass are collected respectively for determination.

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