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Restoration amendment for heavy metal-contaminated soil of metal mine

A soil conditioner, quality content technology, applied in soil conditioning materials, applications, organic fertilizers, etc., can solve problems such as secondary pollution, and achieve the effect of strong applicability, fast and efficient repair, and the effect of remediation and treatment.

Inactive Publication Date: 2017-02-08
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used methods such as rinsing method and electrochemical method have their own advantages, but they are easy to cause secondary pollution and other problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Soil conditioner, containing ammonia nitrogen, nitrate nitrogen, urea and amino acids, soluble potassium carbonate, phosphoric acid, humic acid, carbohydrates and microorganisms. The mass content of nitrogen element is 0.5%, the mass content of potassium element is 0.5%, the mass content of phosphorus element is 0.2%, the mass content of humic acid is 8%, and the mass content of carbohydrate is 65%. The content is 19000cfu / g. The soil improver is in liquid state, sprayed on the polluted soil, mixed with the soil repeatedly, applied once every 1 month, continuously applied for 6 months, and applied 1 liter per mu of land. After the soil improver is applied, it needs to be diluted with water. Correspondingly, about 50 liters of water are used per mu of land. The improvement of heavy metal polluted soil in metal mines after the improvement of this soil conditioner is good.

Embodiment 2

[0021] Soil amendments, including ammonia nitrogen, nitrate nitrogen, urea, soluble potassium carbonate, phosphoric acid, humic acid, carbohydrates and microorganisms. The mass content of nitrogen element is 0.7%, the mass content of potassium element is 0.3%, the mass content of phosphorus element is 0.1%, the mass content of humic acid is 5%, and the mass content of carbohydrate is 72%. The content is 20000cfu / g. The soil improver is in liquid state, sprayed on the polluted soil, mixed with the soil repeatedly, applied once every month, continuously applied for 12 months, and applied 0.7 liters per mu of land. After the soil improver is applied, it needs to be diluted with water. Correspondingly, about 30 liters of water are used per mu of land. The improvement of heavy metal polluted soil in metal mines after the improvement of this soil conditioner is good.

Embodiment 3

[0023] Soil amendments, including ammonia nitrogen, nitrate nitrogen, amino acids, soluble potassium carbonate, phosphoric acid, humic acid, carbohydrates and microorganisms. The mass content of nitrogen element is 0.6%, the mass content of potassium element is 0.4%, the mass content of phosphorus element is 0.15%, the mass content of humic acid is 6.8%, and the mass content of carbohydrate is 69.3%. The content is 19860cfu / g. The soil improver is in liquid state, sprayed on the polluted soil, mixed with the soil repeatedly, applied once every month, continuously applied for 24 months, and applied 0.5 liters per mu of land. After the soil improver is applied, it needs to be diluted with water. Correspondingly, about 25 liters of water are used per mu of land. The improvement of heavy metal polluted soil in metal mines after the improvement of this soil conditioner is good.

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PUM

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Abstract

The invention provides a soil amendment. The soil amendment comprises the following active components: elemental nitrogen, elemental potassium, elemental phosphorus, humic acid, organic matters and microbes. According to the invention, agricultural waste can be used as the restoration amendment for heavy metal contamination of a metal mine, so the soil amendment provided by the invention is convenient in preparation of raw materials, low in cost, simple to operate and good in applicability; the soil amendment has synergistic and complementary effect and exerts additive restoration and treatment effect; and the soil amendment realizes comprehensive utilization of the waste, is free of secondary pollution, accords with the concept of ecological environmental protection, achieves the purpose of recycling of resources and produces ecological, economical and social benefits.

Description

technical field [0001] The invention belongs to the field of mine restoration and relates to a soil improver, in particular to a repair improver for heavy metal polluted soil in metal mines. Background technique [0002] While mining activities have brought huge economic benefits to people, they have also brought serious soil heavy metal pollution problems. Heavy metals that exist in various chemical states or forms will remain, accumulate and migrate after entering the environment or ecosystem. Thereby causing various ecological environmental hazards. [0003] Sites where mining activities lead to heavy metal pollution mainly include open pits, dumps, waste rock dumps, tailings ponds, subsidence areas, and other industrial and mining areas polluted by heavy metals. Such heavy metal-contaminated sites generally have the following characteristics: the physical structure of the soil is destroyed, the ability to retain water and fertilizer is poor, the soil is barren, lacks th...

Claims

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Application Information

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IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 马跃路畅高飞王鞍山庞鹤
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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