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Heavy metal contaminated soil improving agent and preparation method thereof

A technology of polluted soil improvement and production method, which is applied in the field of heavy metal-contaminated soil improver and its production, can solve the problems of secondary pollution, poor improvement effect, and unsustainable passivation, and achieve the effect of reducing the content of heavy metals

Active Publication Date: 2016-05-04
百色市雅芒农业科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Improving soil through soil improvers is an effective means to reduce the content of heavy metals in soil. The existing soil improvers exist in the process of improving soil, such as poor improvement effect, unsustainable passivation and easy to cause secondary pollution and other problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The invention provides a heavy metal polluted soil improver, comprising the following components in parts by weight:

[0035] 45 parts of cloud fungus residue, 25 parts of plant ash, 15 parts of silkworm excrement, 20 parts of quicklime, 20 parts of medical stone, 5 parts of chitosan, 5 parts of fumed silica, 200 parts of sugar factory filter mud, potassium fulvic acid 5 parts, 3 parts of bone meal and 80 parts of water. Heavy metals are in an ion state under acidic conditions and are easily absorbed by crops. Alkaline substances can passivate heavy metals, making them difficult to be absorbed by crops. Plant ash is the waste of coal and wood after burning. It can increase the pH value of the soil after being applied to the soil, and has a significant passivation effect on Pb in acidic soil. Cloud fungus residue is the discarded culture substrate after harvesting cloud fungus, and its main components are mulberry branches and cotton seeds, which can significantly impro...

Embodiment 2

[0054] The invention provides a heavy metal polluted soil improver, comprising the following components in parts by weight:

[0055] 55 parts of cloud fungus residue, 35 parts of plant ash, 25 parts of silkworm sand, 30 parts of quicklime, 30 parts of medical stone, 10 parts of chitosan, 8 parts of fumed silica, 250 parts of sugar factory filter mud, potassium fulvic acid 7 parts, 5 parts of bone meal and 100 parts of water. Heavy metals are in an ion state under acidic conditions and are easily absorbed by crops. Alkaline substances can passivate heavy metals, making them difficult to be absorbed by crops. Plant ash is the waste of coal and wood after burning. It can increase the pH value of the soil after being applied to the soil, and has a significant passivation effect on Pb in acidic soil. Cloud fungus residue is the discarded culture substrate after harvesting cloud fungus, and its main components are mulberry branches and cotton seeds, which can significantly improve ...

Embodiment 3

[0074] The invention provides a heavy metal polluted soil improver, comprising the following components in parts by weight:

[0075] 50 parts of cloud fungus residue, 30 parts of plant ash, 20 parts of silkworm excrement, 25 parts of quicklime, 25 parts of medical stone, 7 parts of chitosan, 6 parts of fumed silica, 225 parts of sugar factory filter mud, potassium fulvic acid 6 parts, 4 parts of bone meal and 90 parts of water. Heavy metals are in an ion state under acidic conditions and are easily absorbed by crops. Alkaline substances can passivate heavy metals, making them difficult to be absorbed by crops. Plant ash is the waste of coal and wood after burning. It can increase the pH value of the soil after being applied to the soil, and has a significant passivation effect on Pb in acidic soil. Cloud fungus residue is the discarded culture substrate after harvesting cloud fungus, and its main components are mulberry branches and cotton seeds, which can significantly impro...

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Abstract

The invention discloses a heavy metal contaminated soil improving agent and a preparation method thereof, wherein the heavy metal contaminated soil improving agent includes the following components in parts by weight: 45-55 parts of cloud ear fungus residues, 25-35 parts of plant ash, 15-25 parts of silkworm excrement, 20-30 parts of quick lime, 20-30 parts of medical stone, 5-10 parts of chitosan, 5-8 parts of fumed silica, 200-250 parts of filter mud from a sugar factory, 5-7 parts of potassium fulvate, 3-5 parts of bone meal, and 80-100 parts of water. The prepared soil improving agent has good improvement effect, can reduce the content of heavy metals in the soil in a long time, moreover, makes full use of the waste, saves resources and reduces pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of soil improvement. More specifically, the present invention relates to a heavy metal polluted soil amendment and a preparation method thereof. Background technique [0002] Heavy metal pollution refers to environmental pollution caused by heavy metals or their compounds. It is mainly caused by human factors such as mining, exhaust gas discharge, sewage irrigation and the use of products with heavy metals exceeding the standard. At present, soil heavy metal pollution has become a major environmental problem worldwide, and soil heavy metal pollution in my country is also becoming more and more serious. Since the vast majority of plant and animal products consumed by humans are primary or secondary products of the "soil-plant" system, the pollution of agricultural products leads to heavy metals entering the human body through the food chain. Therefore, urgent measures need to be taken for the soil contamina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 韦兰洁苏仕林黄斌农艳丰欧阳秋飞
Owner 百色市雅芒农业科技有限责任公司
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