Soil repairing agent for heavy metal element contaminated soil and preparation method of soil repairing agent

A soil remediation agent and a technology for element pollution, which are applied in the field of soil remediation agents for heavy metal element-contaminated soils and their preparation, can solve problems such as soil fertility decline, nutrient element leaching, and ecological reconstruction of polluted farmland, so as to prevent crop absorption and reduce Harmful effect

Inactive Publication Date: 2019-07-16
乐清市华尊电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of engineering to control heavy metal pollution in soil has the advantages of obvious and rapid treatment effects on heavily polluted and small-area soils, but for farmland polluted soils with large polluted areas, light degrees and wide ranges, it needs to consume a lot of manpower and resources. Financial resources, and easily lead to the destruction of soil structure and the decline of soil fertility
[0004] Traditional remediation methods for soil heavy metal pollution, such as landfill, leaching, and electrochemical methods, require a large amount of engineering, high cost, and are difficult to u

Method used

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  • Soil repairing agent for heavy metal element contaminated soil and preparation method of soil repairing agent

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1:

[0033] A soil remediation agent for soil contaminated by heavy metal elements, which comprises the following components in parts by weight: 0.5 parts by weight of calcium silicate, 0.5 parts by lime, 1 part by calcium phosphate, 1 part by sulfur, 30 parts by organic fertilizer and modified 10 parts of acrylic fiber; modified acrylic fiber is prepared from acrylic fiber, ethylenediamine and chloroacetic acid; organic fertilizer is made of pig manure, wheat straw, pond sludge, humic acid, Flammulina velutipes dregs, distiller’s grains, pepper seeds, bitter It is prepared from ginseng, attapulgite powder and oil shale.

[0034] A method for preparing a soil remediation agent for soil contaminated by heavy metal elements using the above raw materials is characterized in that the method for preparing the soil remediation agent includes the following steps:

[0035] (1) Take 10 parts of pig manure and 5 parts of pond sludge in a heating chamber, heat at 100°C for 20 mi...

Example Embodiment

[0038] Example 2:

[0039] A soil remediation agent for soil contaminated by heavy metal elements. The soil remediation agent includes the following components in parts by weight: 1 part of calcium silicate, 1 part of lime, 2 parts of calcium phosphate, 2 parts of sulfur, 35 parts of organic fertilizer and modified 15 parts of acrylic fiber; modified acrylic fiber is prepared from acrylic fiber, 1,3-propanediamine and chloroacetic acid; organic fertilizer is made of cow dung, cotton straw, pond sludge, humic acid, mushroom residue, vinasse, It is prepared from Zanthoxylum bungeanum, Sophora flavescens, Attapulgite powder and oil shale.

[0040] A method for preparing a soil remediation agent for soil contaminated by heavy metal elements using the above raw materials is characterized in that the method for preparing the soil remediation agent includes the following steps:

[0041] (1) Take 11 parts of cow dung and 6 parts of pond sludge in a heating chamber, heat at 101°C for 22 minu...

Example Embodiment

[0044] Example 3:

[0045] A soil remediation agent for soil contaminated by heavy metal elements. The soil remediation agent includes the following components in parts by weight: 3 parts of calcium silicate, 3 parts of lime, 5 parts of calcium phosphate, 3 parts of sulfur, 40 parts of organic fertilizer and modified 20 parts of acrylic fiber; modified acrylic fiber is prepared from acrylic fiber, diethylenetriamine and chloroacetic acid; organic fertilizer is made of sheep manure, corn stalks, pond sludge, humic acid, Flammulina velutipes slag, distiller’s grains, Chinese pepper seeds, Sophora flavescens, attapulgite powder and oil shale.

[0046] A method for preparing a soil remediation agent for soil contaminated by heavy metal elements using the above raw materials is characterized in that the method for preparing the soil remediation agent includes the following steps:

[0047] (1) Take 12 parts of sheep dung and 8 parts of pond sludge in a heating chamber, heat at 103°C for 2...

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Abstract

The invention discloses a soil repairing agent for heavy metal element contaminated soil and a preparation method of the soil repairing agent. The soil repairing agent comprises the following components: calcium silicate, lime, calcium phosphate, sulfur, an organic fertilizer and modified acrylic fibers. The preparation method of the soil repairing agent comprises the following steps: preparing the organic fertilizer; preparing the modified acrylic fibers; and uniformly mixing the calcium silicate, the lime, the calcium phosphate, the sulfur, the organic fertilizer and the modified acrylic fibers to obtain the soil repairing agent. The calcium silicate, the lime, the calcium phosphate, the sulfur, the organic fertilizer and the modified acrylic fiber in the soil repairing agent act together to provide nutrient elements for growth and development of crops, heavy metal ions in soil are fixed, the content and activity of the heavy metal ions in the soil are reduced, and heavy metal adsorption by crops is inhibited, so that the purpose of treating heavy metal ion pollution in the soil is achieved. The experimental structure shows that the soil repairing agent prepared by the method hasa good treatment and repairing effect on the heavy metal contaminated soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil remediation agent for soil polluted by heavy metal elements and a preparation method thereof. Background technique [0002] With the development of industry and the modernization of agricultural production, soil pollution is becoming more and more serious. However, heavy metal pollution in farmland soil is extremely harmful. Heavy metal pollution in soil will not only reduce crop yield and quality, but also enter the human body through the soil-plant system and the food chain, endangering human health and life safety. Soil heavy metal pollution has the characteristics of concealment, hazard lag, long-term nature, and bioaccumulation of heavy metals in the biological chain. These determine that if the understanding and treatment of soil heavy metal pollution are delayed, it will bring unpredictable and serious consequences. For example, the "Itai-Itai Disease" env...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08C05G3/02C05G3/04C09K101/00C05G3/60C05G3/80
CPCB09C1/08C05B7/00C05G3/60C05G3/80C09K17/40C09K2101/00C05D3/02C05D3/00C05D9/00C05D9/02C05F3/00C05F5/002C05F5/008C05F7/00C05F11/00C05F11/02C05F11/08
Inventor 辛钧意
Owner 乐清市华尊电气有限公司
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