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Treatment method for improving tailing soil substrate

A treatment method and technology for tailings soil, applied in the application, organic fertilizer, nitrogen fertilizer and other directions, can solve the problems of nutrient source supply, etc., and achieve the effect of increasing fertility, improving soil fertility, and increasing nitrogen fixation capacity.

Inactive Publication Date: 2018-12-28
LIAONING UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a treatment method for improving tailings soil matrix by mixing soil and inoculating rhizobia to solve the supply problem of nutrient source during tailings ecological restoration

Method used

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  • Treatment method for improving tailing soil substrate
  • Treatment method for improving tailing soil substrate

Examples

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Embodiment

[0022] This example is aimed at improving and treating the tailings soil of the Waitoushan Iron Mine in Benxi, Liaoning. It is just to further illustrate the present invention, not to limit the present invention.

[0023] (1) Source of materials

[0024] Rhizobia strains are commercially available.

[0025] Loess: It is taken from the same area of ​​the tailings that need to be improved and treated, usually from the land near the tailings that need to be improved and treated or from the nearby mountains.

[0026] Organic fertilizers, urea, superphosphate, and potassium sulfate were purchased from the market; Amorpha seedlings were purchased from flower gardens.

[0027] (2) A treatment method for improving tailings soil matrix, comprising the steps of:

[0028] (1) Activation of rhizobia: inoculate rhizobia with 2% inoculum in YMA liquid medium, 120r / min, 30 DEG C, shake flask culture until the OD600 value of the bacterial liquid is 0.5~0.8, obtain the rhizobia liquid, and ...

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Abstract

The invention relates to a treatment method for improving a tailing soil substrate. By inoculating tailing soil containing a modifier with rhizobium, nitrogen fixing capacity of the soil is improved,content of nutrients is increased, and accordingly, the purpose of improvement is achieved. The modifier comprising loess, urea, calcium superphosphate, potassium sulfate and organic fertilizer is added to the tailing soil firstly, Amorpha fruticosa seedlings are planted, and then cultured rhizobium liquid is applied to roots of the Amorpha fruticosa seedlings. The total nitrogen content index indicates that nitrogen content of tailings after improvement is increased. The method can have an ecological remediation effect on the tailing soil and aims to improve fertility of the tailing soil, plants can survive in barren tailing soil, and ecological remediation work is convenient to carry out.

Description

technical field [0001] The invention belongs to the field of soil ecological restoration, specifically applying loess, rhizobia and organic fertilizer to the treatment of barren soil, improving the soil environment by mixing loess, rhizobia providing soil microorganisms, and organic fertilizer increasing soil N, P and K and other nutrient elements, so as to obtain a repair method for improving the soil matrix of tailings by using the method of adding nutrients. Background technique [0002] Tailings pond is a major source of danger, ranking 18th among international disasters and accidents, posing a serious threat to the safety of downstream residents and facilities. Tailings sand is the waste left after beneficiation. It has loose texture, small porosity and poor nutrients. Plants cannot grow on it. It can only be stacked in the tailings pond after mining. With the increase of mining years, the stacking volume will increase. As the tailings dam is getting bigger and bigger,...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05B1/02C05G3/80C05C9/00C05D1/02C05F11/08
Inventor 周素航郝喆曹明杰陈娜
Owner LIAONING UNIVERSITY
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