Alkaline heavy metal contaminated soil remediation agent, application method thereof and application thereof

A soil remediation agent and a technology for polluted soil, which is applied in the field of soil remediation agents polluted by alkaline heavy metals, and can solve problems such as inability to effectively remediate

Inactive Publication Date: 2019-03-26
深圳市南科大资产经营管理有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still unable to effectively remediate alkaline cadmium-contaminated soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a kind of soil remediation agent that is used for alkaline heavy metal pollution, and described soil remediation agent comprises bone meal and oxalic acid, and it is used for the remediation of above-mentioned soil sample, and its use method is: described soil remediation agent and Fertilizers are mixed and applied to the soil together, wherein the amount of bone meal applied is 1% of the soil quality to be repaired, and the amount of oxalic acid applied is 5% of the soil quality to be repaired, and the depth of 20cm is plowed three times, and the adjustment The water content of the soil is up to 35%, and it is maintained for 7 days. During the maintenance, water is added to maintain the water content of the soil. After the maintenance, the available lead content, available cadmium content and soil pH value of the soil are measured.

[0031] The measurement results are: the content of available cadmium in the soil has decreased by 87.0%, the cont...

Embodiment 2

[0033] This embodiment provides a kind of soil remediation agent that is used for alkaline heavy metal pollution, and described soil remediation agent comprises bone meal and oxalic acid, and it is used for the remediation of above-mentioned soil sample, and its use method is: described soil remediation agent and Fertilizers were mixed and applied to the soil together, wherein the applied amount of bone meal was 1% of the mass of the soil to be repaired, and the amount of oxalic acid applied was 1% of the mass of the soil to be repaired, and five times of plowing with a depth of 30 cm was performed, and the adjustment The water content of the soil is up to 30%, and it is maintained for 7 days. During the maintenance, water is added to maintain the water content of the soil. After the maintenance, the available lead content, available cadmium content and soil pH value of the soil are measured.

[0034] The measurement results are: the content of available cadmium in the soil dec...

Embodiment 3

[0036] This embodiment provides a kind of soil remediation agent that is used for alkaline heavy metal pollution, and described soil remediation agent comprises bone meal and oxalic acid, and it is used for the remediation of above-mentioned soil sample, and its use method is: described soil remediation agent and Fertilizers are mixed and applied to the soil together, wherein the applied amount of bone meal is 0.2% of the soil quality to be repaired, and the applied amount of oxalic acid is 2% of the soil quality to be repaired, and the depth of 10 times is 20cm. The water content of the soil is up to 18%, and it is maintained for 7 days. During the maintenance, water is added to maintain the water content of the soil. After the maintenance, the available lead content, available cadmium content and soil pH value of the soil are measured.

[0037] The measurement results are: the content of available cadmium in the soil has decreased by 46.6%, the content of available lead has d...

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Abstract

The invention relates to an alkaline heavy metal contaminated soil remediation agent, an application method of the alkaline heavy metal contaminated soil remediation agent and application of the alkaline heavy metal contaminated soil remediation agent. The soil remediation agent comprises bone powder and oxalic acid. The application method of the soil remediation agent comprises the steps that thesoil remediation agent is mixed with fertilizer, the soil remediation agent and the fertilizer are applied to the soil together, tillage is conducted, and the water content of the soil is adjusted. By means of the reasonable combination of the bone powder and the oxalic acid, the soil remediation agent can guarantee the soil fertility and is green and economical, the pH value of the alkaline soilcannot be greatly changed as soil remediation is achieved, and the excellent and lasting effect of remediation of the alkaline heavy metal contaminated soil is achieved.

Description

technical field [0001] The invention belongs to the field of soil heavy metal remediation, and relates to a soil remediation agent and its use method and application, in particular to a soil remediation agent for alkaline heavy metal pollution and its use method and application. Background technique [0002] Soil heavy metal pollution remediation technologies mainly include soil regulation technology for the purpose of control and phytoremediation technology for the purpose of remediation. Soil control technology also includes agronomic control technology and solidification, stabilization and restoration technology. In-situ solidification stabilization and remediation technology refers to fixing the toxic heavy metals in the soil by adjusting the physical and chemical properties of the soil and a series of chemical reactions, or converting them into chemically inactive forms to reduce the bioavailability of heavy metals. Phytoremediation technology usually refers to the use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C09K17/40C09K101/00
CPCB09C1/08B09C2101/00C09K17/40C09K2101/00
Inventor 胡清朱焰丁苏苏石丕星林斯杰黄珏瑛
Owner 深圳市南科大资产经营管理有限公司
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