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A metal mine soil improver and mine ecological restoration method using the improver

An amendment and metal technology, applied in the fields of mine ecological restoration, metal mine tailings amendment, and soil amendment, can solve the problem that the physical properties of the soil cannot be improved in coordination, the amendment is difficult to meet the restoration standard, and the shortage of nutrients, etc. problems, to achieve the effect of favoring vegetation settlement and growth, reducing permeability and phytotoxicity, and slowing the release of fertility

Active Publication Date: 2017-01-25
SHAOGUAN TAOLIN GREEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, different modifiers have different passivation effects on heavy metals of different types and properties. For compound polluted soils, it is difficult for a single modifier to meet the remediation standard.
Applying a large amount of the same amendment at the same time may also bring in other harmful elements, the physical properties of the soil cannot be coordinated and improved, and some macronutrients are in short supply or the supply ratio is out of balance, etc.
Furthermore, as a single-source soil conditioner, it is also subject to certain restrictions on the supply of

Method used

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  • A metal mine soil improver and mine ecological restoration method using the improver
  • A metal mine soil improver and mine ecological restoration method using the improver
  • A metal mine soil improver and mine ecological restoration method using the improver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 Effect of different industrial and agricultural waste combinations on tailings improvement and restoration

[0040] The experimental site is the lead-zinc tailings pond of Xiangxi Haoyu Chemical Co., Ltd., and a 2m×2m test plot was established to verify the improvement and restoration effect of five different industrial and agricultural waste combinations on lead-zinc tailings. Chicken manure, distiller's grains, traditional Chinese medicine dregs, mushroom dregs, and crop straw were randomly prepared into 17 combinations according to the weight ratio of 10 to 50 (Table 1). Plot and tailings (without adding any modifier) ​​experimental plot. Three gradients are set for the amount of improver additives, which are low 10t / ha, medium 30t / ha, and high 60t / ha. There are 23 experimental plots for each gradient, and a total of 69 experimental plots for the three gradients. Plants with high tolerance to heavy metals near the mining area, such as awn, canadensis, coc...

Embodiment 2

[0042] Example 2 Field effect of improving lead-zinc tailings by combining 5 kinds of industrial and agricultural organic wastes

[0043] In January 2014, a field test site of 50m×40m was established in the lead-zinc tailings pond of Taifeng Mining Group in Xiangxi Prefecture, leveled, fenced, and the background value was sampled and tested. The tailings pond has been abandoned for 3 years. The total amount of heavy metals in the tailings are: Pb 813mg / kg, Zn2342mg / kg, Cd 36mg / kg, Mn 1160mg / kg, the surface is bare, and there is no plant growth. Mix chicken manure, mushroom dregs, crop straw, distiller's grains, and traditional Chinese medicine dregs in a weight ratio of 20:20:20:20:20, and spread them on the surface of the tailings. The total addition amount is 6t (equivalent to 30t / ha). Use the plowing method to mix with 0-30cm tailings, and balance for about two months. The main dominant plants with strong tolerance near the mining area were collected as restoration species...

Embodiment 3

[0048] Example 3 Field effect of industrial and agricultural waste combined improvement of manganese slag storage

[0049] In January 2013, a field test site with an area of ​​about 10 mu was established in the manganese slag warehouse of Manganese Zinc High-Tech Co., Ltd. in Xiangxi Prefecture. It was leveled, fenced, and the background value was sampled and tested. The manganese slag warehouse has been abandoned for 5 years. The total amount of heavy metals in the manganese slag is: Pb 208mg / kg, Zn859mg / kg, Cd 25mg / kg, Mn 6589mg / kg. The ground is bare without any plant growth. Mix chicken manure, mushroom slag, crop straw, distiller's grains, and traditional Chinese medicine slag evenly in a weight ratio of 50:20:10:10:10, and cover the surface of manganese slag. The total amount added is 13.3t (equivalent to 20t / ha). Use the plowing method to mix with 0-30cm manganese slag, and balance for about two months. The main dominant plants with strong tolerance near the manganese ...

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Abstract

The invention belongs to the field of biology, relates to a soil conditioner, and especially relates to a metal mine tailings conditioner, and a mine ecological remediation method. The metal mine soil conditioner comprises following ingredients: feces of livestock and poultry, mushroom residue, crop straw, vinasse, and Chinese medicine residue. According to the mine ecological remediation method, the metal mine soil conditioner is uniformly mixed with surface soil, and mine soil can be improved after 1 to 3 months of balancing; and planting of vegetation is performed further so as to realize ecological restoration.

Description

technical field [0001] The invention belongs to the field of biology, and relates to a soil conditioner, in particular to a metal mine tailings conditioner, and to a mine ecological restoration method. Background technique [0002] While mining and metal smelting activities have brought huge economic benefits to human beings, they have also brought serious soil heavy metal pollution problems. Heavy metal pollution has the characteristics of wide pollution range, long duration, hidden pollution, and inability to be biodegraded. Heavy metals entering the soil can not only inhibit the growth and development of plants, but also pass and accumulate through the food chain, eventually endangering human health. [0003] Lands polluted by heavy metals due to mining mainly include open-pit mining sites, dumps, tailings sites, subsidence areas, and surrounding lands that are polluted by heavy metals and lose economic value. This kind of land polluted by heavy metals generally has the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04B09C1/00C05G3/80
CPCB09C1/00C05F3/00C05G3/80C05F5/008C05F5/006C05F11/00
Inventor 杨胜香曹建兵
Owner SHAOGUAN TAOLIN GREEN TECH
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