Heavy metal treating agent for soil

A technology for heavy metals and treatment agents, applied in soil conditioning materials, applications, agricultural machinery and implements, etc., can solve the problems of difficulty in popularization and application, difficult degradation of heavy metals, and long treatment time, and achieve the effect of reducing heavy metal pollution in soil

Inactive Publication Date: 2012-09-05
HENAN LANBOSHI TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy metal pollution is different from organic pollution. Heavy metals themselves are difficult to degrade, and are easy to be enriched by plants or animals. Therefore, it is difficult to treat heavy metal pollution in soil.
At present, the commonly used soil heavy metal pollution treatment adopts agricultural ecological engineering measures to breed special plants and microorganisms on the soil polluted by heavy metals, and these special plants and microorganisms absorb or degrade the heavy metals in the soil, so as to achieve the purpose of purifying the soil. pu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The heavy metal treatment agent for soil in this embodiment is formed by mixing the following components by weight: 30% of clay minerals, 30% of organic fertilizer, and 40% of seaweed. The above components are pulverized and mixed to prepare a heavy metal treatment agent for soil. Clay minerals, organic fertilizers and seaweeds are specifically selected according to the planting species. In this example, wheat cultivation is taken as an example. The clay minerals are montmorillonite and kaolin at a ratio of 1:1. Fresh kelp for sale.

[0010] Soil heavy metal treatment test:

[0011] Taking the unpolluted cinnamon soil in Henan Province as the carrier, the air-dried soil samples were passed through a 2 mm sieve for testing. Add exogenous water-soluble lead acetate and cadmium sulfate, simulate soil Pb, Cd pollution according to Pb 100mg / kg, Cd 1mg / kg, after aging for 7 days, add the treatment agent of the present embodiment according to the dosage of 1g / kg, and cultivat...

Embodiment 2

[0013] The heavy metal treatment agent for soil in this embodiment is formed by mixing the following components by weight: 40% of clay minerals, 40% of organic fertilizer, and 20% of seaweed. The above components are pulverized and mixed to prepare a heavy metal treatment agent for soil. Clay minerals, organic fertilizers and seaweeds are specifically selected according to the planting species. In this example, corn is planted as an example. Bentonite is used as the clay mineral, farmyard manure made from livestock and poultry manure is used as the organic fertilizer, and commercially available giant seaweed is used as the seaweed.

[0014] Soil heavy metal treatment test:

[0015] Taking the unpolluted cinnamon soil in Henan Province as the carrier, the air-dried soil samples were passed through a 2 mm sieve for testing. Add exogenous water-soluble lead acetate and cadmium sulfate, simulate soil Pb, Cd pollution according to Pb 100mg / kg, Cd 1mg / kg, after aging for 7 days, add...

Embodiment 3

[0017] The heavy metal treatment agent for soil in this embodiment is formed by mixing the following components by weight: 35% of clay minerals, 35% of organic fertilizer, and 30% of seaweed. The above components are pulverized and mixed to prepare a heavy metal treatment agent for soil. Clay minerals, organic fertilizers and seaweeds are specifically selected according to the planting species. In this example, soybean cultivation is taken as an example. Bentonite is used as the clay mineral, farmyard manure made from livestock and poultry manure is used as the organic fertilizer, and commercially available Beibu Gulf seaweed is used as the seaweed.

[0018] Soil heavy metal treatment test:

[0019] Taking the unpolluted cinnamon soil in Henan Province as the carrier, the air-dried soil samples were passed through a 2 mm sieve for testing. Add exogenous water-soluble lead acetate and cadmium sulfate, simulate soil Pb, Cd pollution according to Pb 100mg / kg, Cd 1mg / kg, after agi...

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Abstract

The invention discloses a heavy metal treating agent for soil. The heavy metal treating agent comprises the following components in percentage by weight: 30 to 40 percent of clay minerals, 30 to 40 percent of organic fertilizer, and 20 to 40 percent of algae. In the heavy metal treating agent for soil, the algae is a plant which lives in sea water for a long time, has good adsorption and fixing effect to heavy metals, can quickly adsorb the heavy metals in the soil when entering the soil polluted by heavy metals, and enables the heavy metals to loss bioactivity by combination effect of organic matters in the organic fertilizer, so that absorption of plants and animals to heavy metals can be reduced, beneficial elements in the clay minerals can be replaced through crystal replacement by utilizing the porous property of the clay minerals, and inactivated heavy metal elements can enter the clay minerals to achieve the effect of treating heavy metal polluted soil.

Description

technical field [0001] The invention relates to a heavy metal treatment agent for soil. Background technique [0002] Heavy metals are those with a density greater than 4 (g / cm 3 ) metals, which mostly exist in the form of compounds in nature. With the mining, smelting, processing and commercial manufacture of heavy metals by humans, many heavy metals such as lead, cadmium, mercury, etc. enter the atmosphere, water or soil, causing serious Heavy metal pollution. Soil is an important natural resource for human survival and development. Heavy metal pollution of soil will directly affect human health and the entire terrestrial ecosystem. Heavy metal pollution is different from organic pollution. Heavy metals themselves are difficult to be degraded, and they are easily enriched by plants or animals. Therefore, the treatment of heavy metal pollution in soil is difficult. At present, the commonly used treatment of heavy metal pollution in soil adopts agro-ecological engineering...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00
Inventor 王克敏
Owner HENAN LANBOSHI TECH
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