Optimized formula for improved matrix applied to ecological restoration of acidic weathered coal gangue storage yard

A technology of ecological restoration and coal gangue, applied in planting substrates, chemical instruments and methods, applications, etc., can solve problems such as non-conformity with green mine construction, and achieve the effect of promoting the natural ecological evolution process

Inactive Publication Date: 2020-01-14
GUIZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The previous matrix formula involved a lot of industrial solid waste, which is not suitable for the construction of green mines, and is not suitable for the current ecological restoration of acid weathered coal gangue yards. There is an urgent need to develop green, environmentally friendly, and ecological matrix formulas to serve acid weathered coal gangue yards. Ecological restoration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 25% of limestone powder, 10% of concentrate ore powder, 25% of chicken manure organic fertilizer and 20% of pig manure organic fertilizer, 5% of soil, 5% of discarded bacteria sticks after edible fungus cultivation and Common bryophytes around 5%, mix the above raw materials, stir, and mix evenly.

[0017] Among them, limestone powder: limestone or dolomite rock in karst areas such as Guizhou has been crushed into 5mm stone powder (seven eye sand); the main component is calcium carbonate (CaCO3), and its content is more than 50%;

[0018] Phosphate rock powder is concentrated ore powder crushed by Wengfu phosphate rock ore to 1mm, the main component is fluorapatite (chemical formula, Ca10(PO4)6F2), and its total phosphorus content is above 30%;

[0019] Soil: common soil for restoration of coal gangue yard mining area;

[0020] Grass powder: common weeds or fresh grass or hay after crushing 2cm of corn and rice stalks;

[0021] Bryophytes: common local fresh bryo...

Embodiment 2

[0024] Embodiment 2: prepare according to the raw material of embodiment 1 and get limestone powder 25%, phosphate rock powder 30%, chicken manure organic fertilizer 10%, pig manure organic fertilizer 10%, soil 10% and bacterium residue 5%, grass Powder 9%, bryophyte 1%, mix and stir evenly.

Embodiment 3

[0025] Embodiment 3: prepare according to the raw material of embodiment 1 and get limestone powder 30%, phosphate rock powder 25%, chicken manure organic fertilizer 10%, pig manure organic fertilizer 10%, soil 10% and bacterium residue 5%, grass Powder 5%, bryophyte 5%, mix and stir evenly.

[0026] 1. with the composite improved matrix of the present invention of embodiment 1-3 indoor pot test, the composite improved matrix can regulate the effect of improving the matrix granularity, increasing the plant nutrient of the storage yard, and regulating the pH of the storage yard by remaining sludge, so as to promote plant growth , Control coal gangue pollution, reduce soil consumption.

[0027] 2. Select Example 2 for "Project Restoration of Limushan Abandoned Coal Mining Area, Longli County, Qiannan Prefecture".

[0028] On the acid weathered coal gangue yard in the abandoned coal mine area of ​​Limushan, Longli County, Qiannan Prefecture, the pH of the yard is about 2.0, and ...

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Abstract

The invention relates to an optimized formula for an improved matrix applied to ecological restoration of an acidic weathered coal gangue storage yard, belonging to the technical field of ecological restoration of mining wasteland. The invention aims to overcome the problems that conventional coal gangue storage yards are generally high in alien soil cost, severe in site condition and difficult for plants to survive and that common alkali neutralization methods and fertilization treatment are prone to failure. The optimized formula comprises, by volume, 10%-50% of limestone powder, 5%-50% of ground phosphate rock, 5%-30% of poultry manure organic fertilizer, 5%-30% of livestock manure organic fertilizer, 5%-30% of soil, 5%-10% of mushroom dregs, 5%-10% of grass meal and 1%-5% of bryophyte.The composite improved matrix is simple to prepare, wide in raw material sources and good in effect, replaces industrial wastes including residual sludge, fly ash and phosphogypsum with pollution risks in a repair matrix formula, and has good environmental benefits, economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of ecological restoration of abandoned mine land, and more specifically relates to a formula for improving the matrix material for ecological restoration of acidic weathered coal gangue storage yards, which is used for soil matrix restoration of acidic weathered coal gangue storage yards. Background technique [0002] Coal gangue is an industrial solid waste produced during coal mining and washing and processing. It has low carbon content and is harder than coal. The main components are Al2O3 and SiO2. It has poor nutrients and low utilization rate, and it seriously pollutes the surrounding water and soil. specialty. The cumulative discharge of coal gangue in my country has reached more than 4 billion tons, and the cumulative amount is still increasing every year. Coal gangue has become the largest industrial solid waste in my country. Coal gangue is often associated with various sulfide minerals such as py...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/80C09K17/40A01G24/10A01G24/12A01G24/20A01G24/22C09K101/00C09K109/00
CPCC05B7/00C09K17/40A01G24/10A01G24/12A01G24/20A01G24/22C09K2101/00C09K2109/00
Inventor 付天岭王虎何照付天兵舒洁吴永贵罗有发欧莉莎梁天昌张朝玉
Owner GUIZHOU UNIV
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