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Manganese tailings ore district restoration method

A restoration method and technology of manganese tailings, applied in the fields of soil preparation, seed and rhizome treatment, application, etc., can solve the problems of low clay content, low organic matter content, poor fertilizer and water retention capacity, etc.

Inactive Publication Date: 2019-03-12
ZUNYI NORMAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the extremely poor soil matrix, low organic matter content, low clay content, poor texture, lack of aggregates, poor structure, and poor ability to retain fertilizer and water, the plants planted in the mining area cannot grow for a long time. , will wither and die after a while

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of manganese tailings mining area restoration method, comprises the following steps:

[0017] Step 1. Lay a layer of base soil in the mining area by the guest soil method. The thickness of the base soil is 4-6cm. The base soil is mixed by volume ratio of 4:1 from non-polluting soil and black carbon in other areas;

[0018] Step 2, select the seeds of the plant Xiaofei Peng;

[0019] Step 3, make nutrient solution, the raw material that nutrient solution comprises and the volume fraction of raw material are chitosan 2%, polyvinyl alcohol 2%, gum arabic 8%, ethylene glycol 8%, carboxymethyl cellulose 3% and water 25%, after the plants germinate, apply 25 catties of base fertilizer per mu to the soil in the mining area. Composed of slow-release fertilizer granules; step 4, soak the seeds in the nutrient solution for 1 to 2 minutes, remove them and evenly sow them on the base soil.

Embodiment 2

[0020] Embodiment 2: a kind of manganese tailings mining area restoration method, comprises the following steps:

[0021] Step 1, adopt the foreign soil method to lay a layer of base soil in the mining area, the thickness of the base soil is 4cm, and the base soil is formed by mixing non-polluting soil and black carbon in a volume ratio of 4:1 in other areas;

[0022] Step 2, select the seeds of the plant Xiaofei Peng;

[0023] Step 3, make nutrient solution, the raw material that nutrient solution comprises and the volume fraction of raw material are chitosan 0.1%, polyvinyl alcohol 0.5%, gum arabic 2%, ethylene glycol 2%, carboxymethyl cellulose 1% and water 20%, after the plants germinate, apply 22 catties of base fertilizer per mu to the soil in the mining area. Composition of slow-release fertilizer granules;

[0024] Step 4: Soak the seeds in the nutrient solution for 1 minute, remove them and evenly sow them on the base soil.

Embodiment 3

[0025] Embodiment 3: a kind of manganese tailings mining area restoration method, comprises the following steps:

[0026] Step 1, adopt the foreign soil method to lay a layer of base soil in the mining area, the thickness of the base soil is 5cm, and the base soil is formed by mixing non-polluting soil and black carbon in a volume ratio of 4:1 in other areas;

[0027] Step 2, select the seeds of the plant Xiaofei Peng;

[0028] Step 3, make nutrient solution, the raw material that nutrient solution comprises and the volume fraction of raw material are chitosan 12%, polyvinyl alcohol 1.2%, gum arabic 5%, ethylene glycol 5%, carboxymethyl cellulose 2% and water 23%, after the plants germinate, apply 25 catties of base fertilizer per mu in the soil of the mining area. The base fertilizer is made of 4 catties of slow-release fertilizer particles made of boric acid, 13 catties of slow-release fertilizer particles made of potassium carbonate and 8 catties of zinc sulfate. Composition...

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Abstract

The invention discloses a manganese tailings ore district restoration method, and belongs to the technical field of tailings contamination restoration. The method comprises the steps that one, a soilreplacement method is adopted to lay a layer of base soil in an ore district, the thickness of the base soil is 4-6 cm, and the base soil is formed by the mixing of soil and carbon black according tothe volume ratio being 4:1; two, seeds of pioneer plants are selected; three, nutritious solution is produced, and the nutritious liquid comprises, by volume, 0.1-2% of chitosan, 0.5-2% of polyvinyl alcohol, 2-8% of gum acacia, 2-8% of ethylene glycol, 1-3% of carboxy methyl cellulose and 20-25% of water; four, the seeds are placed into the nutritious liquid to be soaked for 1-2 min before being taken out and uniformly sowed in the base soil. The method has the advantages that the survival rate of plants which are planted and the coverage rate of the plants on the ore district are far higher than that of a traditional method, and the method has a good restoration effect on a manganese tailings ore district.

Description

technical field [0001] The invention belongs to the technical field of tailings pollution restoration, and in particular relates to a restoration method for a manganese tailings mining area. Background technique [0002] Factors such as high heavy metal content, poor nutrition, unsuitable pH and weak water holding capacity lead to lack of vegetation in the area where manganese tailings slag is stored, serious soil erosion, and heavy metals diffuse with rain and dust. Manganese tailings have become an important source of pollution in manganese mining areas. By screening and cultivating suitable plants and taking auxiliary measures at the same time, the plants can be settled in the tailings slag storage area in a short time, thereby rebuilding the vegetation. Some plants can absorb and fix heavy metals in their roots, and some plants can combine their root exudates and litter decomposition products with heavy metals to form insoluble compounds, thereby preventing and controll...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01C1/00C05G3/00C05D11/00
CPCA01B79/02A01C1/00C05D1/00C05F11/00C05G3/00C05G5/20C05D9/02
Inventor 张宝成李德辉白艳芬
Owner ZUNYI NORMAL COLLEGE
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