Soil remediation agent for heavy metal pollution as well as application method and application thereof

A soil remediation agent and heavy metal technology, which is applied in the field of heavy metal contaminated soil remediation agents, can solve the problems of not being able to achieve alkaline and acidic soil remediation at the same time, and not having universal applicability, and achieve universal and lasting remediation effects. Effect

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, this restoration agent solution cannot realize the restoration of alkaline and acidic soils at the same time, and does not have universal applicability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The situation of pollutant content in the soil sample that the present embodiment uses is: total cadmium 10.2mg / Kg, total lead 920mg / Kg, pH value is 7.8, uses " the determination atomic absorption method GB / T of soil quality effective state lead and cadmium 23739-2009", the content of available cadmium in soil is 5.39mg / Kg, and the content of available lead is 374mg / Kg.

[0029] This embodiment provides a soil remediation agent for alkaline heavy metal pollution, the soil remediation agent includes bone meal and ferrous sulfate, and it is used for the remediation of the above soil samples, and its use method is: remediate the soil Mix fertilizers and fertilizers and apply them to the soil together, wherein the amount of bone meal applied is 1% of the soil mass to be repaired, and the amount of ferrous sulfate applied is 2.5% of the soil mass to be repaired, and the depth of 5 times is 30cm. Plow, and adjust the water content of the soil to 30%, and maintain for 7 days. ...

Embodiment 2

[0032] The situation of pollutant content in the soil sample that the present embodiment uses is: total cadmium 4.5mg / Kg, total lead 3467mg / Kg, pH value is 5.53, use " the mensuration atomic absorption method GB / T of soil quality effective state lead and cadmium 23739-2009", the content of available cadmium in soil is 3.57mg / Kg, and the content of available lead is 1601mg / Kg.

[0033]This embodiment provides a soil remediation agent for acidic heavy metal pollution. The soil remediation agent includes bone meal and ferrous sulfate, and it is used for the restoration of the above soil samples. The method of use is: the soil remediation agent Mix it with fertilizer and apply it to the soil together. The amount of bone meal applied is 1% of the mass of the soil to be repaired, the amount of ferrous sulfate is 0.5% of the mass of the soil to be repaired, and 5 times of plowing with a depth of 30cm , and adjust the water content of the soil to 30%, maintain for 14 days, add water d...

Embodiment 3

[0036] The situation of pollutant content in the soil sample that the present embodiment uses is: total cadmium 10.2mg / Kg, total lead 920mg / Kg, pH value is 7.8, uses " the determination atomic absorption method GB / T of soil quality effective state lead and cadmium 23739-2009", the content of available cadmium in soil is 5.39mg / Kg, and the content of available lead is 374mg / Kg.

[0037] The present embodiment provides a kind of soil remediation agent that is used for alkaline heavy metal pollution, and described soil remediation agent comprises calcium magnesium phosphate fertilizer and citric acid, and it is used for the remediation of above-mentioned soil sample, and its use method is: described soil The restorative agent is mixed with fertilizer and applied to the soil together. The amount of calcium magnesium phosphate fertilizer applied is 0.2% of the soil mass to be repaired, and the amount of citric acid is 2% of the soil mass to be repaired. The depth of 3 times is 50cm....

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Abstract

The invention relates to a soil remediation agent for heavy metal pollution as well as an application method and application thereof. The remediation agent comprises phosphate and a pH (Potential of Hydrogen) regulator, wherein the phosphate comprises any one or a combination of at least two of phosphate rock powder, calcium magnesium phosphate fertilizer, bone meal, apatite and tailing phosphaterock; and the pH regulator comprises any one or a combination of at least two of oxalic acid, citric acid and ferrous sulfate. The application method of the soil remediation agent comprises the following steps: mixing the soil remediation agent and fertilizer; commonly applying to soil; and ploughing and adjusting the moisture content of the soil. The phosphate and the pH regulator are reasonablymatched, so that the soil remediation agent is green and economical under the condition that the soil fertility is ensured, and has an extremely excellent lasting remediation effect on alkaline or acidic heavy metal polluted soil.

Description

technical field [0001] The invention belongs to the field of soil heavy metal remediation, relates to a soil remediation agent and its use method and application, in particular to a soil remediation agent for heavy metal pollution and its use method and application. Background technique [0002] With the rapid development of the global economy, pollutants containing heavy metals enter the soil through various channels, causing serious soil pollution. Soil heavy metal pollution can affect the decline in crop yield and quality, and can endanger human health through the food chain. The further deterioration of air and water environment quality has aroused widespread attention from all over the world. Soil heavy metal pollution is a major soil environmental pollution problem in my country, and more than 1,000 tons of grain are polluted by heavy metals every year. [0003] Compared with heavy metal pollution in industrial sites, farmland soil has a larger area of ​​heavy met...

Claims

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Application Information

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