Method for planting and greening of tailing bymicrobial agent and modifier

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.

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 ...

AI Technical Summary

Problems solved by technology

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

[0005] Among the relevant patents that have been applied in China, the patent application number is 201610669372.2 "A Soilless Tailings Reclamation Method", which uses tailings to concentrate, fill subsidence areas, gullies, and low-lying lands, and prepare soilless tailings matrix and soilless tailings. Steps such as tailings matrix covering are used to utilize a large amount of tailings as resources, but the process is complicated, and the heavy metal elements in the tailings are not considered, which may easily cause new pollution

The patent application number is 201610668876.2 "A Molybdenum Tailings Planting Soil and Its Preparation Method", which uses molybdenum tailings, non-polluted soil, peat soil, vermiculite, perlite, medical stone, decomposed organic fertilizer and humic acid according to a certain Proportionally mixed to make planting soil, but the tailings content is only 30% to 40%, the utilization rate is low, and the economic cost is high

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