Method for planting and greening of tailing bymicrobial agent and modifier

A technology of microbial bacteria agent and improver, which is applied in the field of tailings planting and greening, can solve the problems of low utilization rate, tailings dam collapse and leakage, and easy generation of dust pollution, etc., and achieves the goal of low price and elimination of secondary pollution Effect

CN109174935AInactive Publication Date: 2019-01-11ANSTEEL GRP MINING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for planting and greening of tailing by a microbial agent and a modifier. The tailing is covered with soil dressing with the thickness of 2-4cm, the modifier made ofcharcoal, organic fertilizer, husk and haycite is applied, wherein the dosage is 2.0-2.5kg / m<2>; turning cover is conducted, wherein the depth of turning over is 15-20cm; after turning over, the microbial agent containing mortierella, trichoderma asperellum and mucor circinelloides is sprayed, wherein the dosage is 15-20g / m<2>; leveling and watering are conducted, the water holding rate of the tailing is 60%+ / -5%; and okra, alfalfa and kochia scoparia are planted, harvesting is conducted after 2-3 months. The method solves the problem that mass waste tailing produced by mining is hard to use.The adopted microbial agent is screened from the tailing, adaptation is achieved. The modifier is a green and non-polluting material, and the cost is low. Soil utilization of the tailing is achieved,and secondary pollution in the process of tailing utilization can be eliminated.
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Description

technical field

[0001] The invention relates to the field of tailings treatment, in particular to a method for planting and afforesting tailings by using microbial agents and improvers. Background technique

[0002] my country is a big mining country, and correspondingly it is also a big tailings storage country. Relevant data show that in 2013 alone, my country's tailings production reached 839 million tons, and it is growing at an average annual growth rate of more than 11%. So far, my country's tailings accumulation has reached 10 billion tons. A large number of tailings stockpiles have brought a series of environmental problems: occupying land resources, causing soil salinization and heavy metal pollution; easy to generate dust pollution; harmful components enter the water environment and pollute water bodies; tailings ponds have dam collapse and seepage risk of leakage.

[0003] The accumulation of tailings is large, the utilization rate is low, and the comprehensive ...

Examples

Embodiment

[0027] Embodiment: Utilize microbial bacterial agent and improving agent to the method for planting greening of tailings

[0028] The method of the present invention is tested in the Dagushan Iron Mine Tailings Area, Qianshan District, Anshan City, Liaoning Province.

[0029] The soil particle composition of the tailings is mainly sand, with a medium sand content of 19.2%, a fine sand content of 43.5%, and a clay content of only 3.68%. The heavy metal pollution level in the mining area is moderate, and there are potential risks. Further research and prevention and control are needed. The content of organic matter in iron tailings is extremely low, the iron tailings is alkaline with a pH of 8.72, the water holding capacity of iron tailings is poor, the content of available potassium is relatively rich, and the comprehensive fertility status is low.

[0030] Three experimental fields with a length of 5m and a width of 4m and an area of ​​20m2 were selected for the tailings soil ...