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Soil system reconstruction method for reclaiming abandoned mines to obtain forest lands

A system reconstruction and soil technology, applied in the field of environmental restoration, can solve problems such as environmental hazards, lack of management methods and treatment and disposal technologies, and achieve the effects of accelerating construction, facilitating plant growth, and ensuring safe utilization

Active Publication Date: 2018-12-28
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of reasonable and effective management methods and treatment and disposal technologies, a large amount of urban sludge can only be temporarily piled up, and the resulting secondary pollution has brought great harm to the environment
Land use is currently recognized as the most effective way to utilize sludge resources. However, a large number of pollutants in sludge limit the safe land use of sludge. Therefore, how to effectively and safely dispose of sludge should be adapted to local conditions according to the characteristics of sludge. The use of will become the focus of future research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a method for reconfiguring the mine soil system, including the following steps:

[0025] (1) Use a rotary tiller to plow the hardened soil on the surface of the mine to a depth of 5cm, and collect the hardened soil, which needs to be collected after passing through a 2mm sieve to remove large-size gravel;

[0026] (2) Mix municipal sludge, straw, and biochar with a water content of 80% according to the material mass ratio of 100:20:9, and the fermentation period is 35 days to obtain stabilized sludge;

[0027] (3) The step of covering the mine with a thickness of 20cm after cleaning the hardened soil (2) Stabilizing sludge;

[0028] (3) On the basis of covering the stabilized sludge, cover the loam soil with a thickness of 25cm;

[0029] (4) On the basis of covering the loam, cover the hardened soil collected in step (1) with a thickness of 10cm;

[0030] (5) On the basis of covering the hardened soil, cover the stabilized sludge with a thickn...

Embodiment 2

[0034] This embodiment provides a method for reconfiguring the mine soil system, including the following steps:

[0035] (1) Use a rotary tiller to plow the hardened soil on the surface of the mine to a depth of 12cm, and collect the hardened soil, which needs to be collected after passing through a 2mm sieve to remove large-size gravel;

[0036] (2) Mix municipal sludge, straw, and biochar with a water content of 80% according to the material mass ratio of 100:20:9, and the fermentation period is 40 days to obtain stabilized sludge;

[0037] (3) The step of covering the mine with a thickness of 23cm after cleaning the hardened soil (2) Stabilizing sludge;

[0038] (3) On the basis of covering the stabilized sludge, cover the loam with a thickness of 22cm;

[0039] (4) On the basis of covering loam, cover the hardened soil collected in step (1) with a thickness of 12cm;

[0040] (5) On the basis of covering the hardened soil, cover the stabilized sludge with a thickness of 1...

Embodiment 3

[0044] This embodiment provides a method for reconfiguring the mine soil system, including the following steps:

[0045] (1) Use a rotary tiller to plow the hardened soil on the surface of the mine to a depth of 20cm, and collect the hardened soil, which needs to be collected after passing through a 2mm sieve to remove large-size gravel;

[0046] (2) Mix municipal sludge, straw, and biochar with a water content of 80% according to the material mass ratio of 100:20:9, and the fermentation period is 45 days to obtain stabilized sludge;

[0047] (3) The step of covering the mine with a thickness of 25cm after cleaning the hardened soil (2) Stabilizing sludge;

[0048] (3) On the basis of covering the stabilized sludge, cover the loam with a thickness of 20cm;

[0049] (4) On the basis of covering loam, cover the hardened soil collected in step (1) with a thickness of 15cm;

[0050] (5) On the basis of covering the hardened soil, cover the stabilized sludge with a thickness of 1...

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Abstract

The invention provides a soil system reconstruction method for reclaiming abandoned mines to obtain forest lands. The soil system reconstruction method is characterized by comprising steps of plowingsurface hardened soil in the mines by the depths of 5-20 cm, and collecting hardened soil; covering the mines with stabilization sludge with the thickness of 20-25 cm; covering the mines with loam with the thickness of 20-25 cm; covering the mines with the collected hardened soil with the thickness of 10-15 cm; covering the mines with stabilization sludge with the thickness of 10-15 cm; plowing built layered soil by the depth of 20-25 cm; planting vegetation in plowed soil substrates. The soil system reconstruction method has the advantages that soil replacement soil sources can be saved, existing hardened top soil in the mines and the urban sludge can be sufficiently utilized, and additional environmental secondary disruption can be reduced while the soil replacement soil sources are saved; soil architecture is constructed, and generation of soil ecosystems can be accelerated; the urban sludge is recycled, and the soil system reconstruction method is free of secondary pollution.

Description

technical field [0001] The invention relates to the technical field of environmental restoration, in particular to a soil system reconstruction method for reclaiming abandoned mines into woodlands. Background technique [0002] For mine restoration, due to mechanical operations, most of the surface soil in the mining area is in a hardened and sandy state. The hardened soil has poor water retention capacity and low fertility. Traditional mine restoration does not make full use of this part of the soil. Cover soil after plowing. At present, it is difficult to obtain the soil source required for mine reclamation. Obtaining new soil source will cause new environmental damage and increase repair costs. Therefore, the resource utilization and improvement of this part of the hardened soil in the mining area Particularly important; [0003] When mines enter the stage of reclamation, the most important thing is to reconstruct a soil ecosystem with high soil productivity. At present,...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 李金典马跃高飞
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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