Coal gangue-fly ash-sludge substrate and mycorrhiza technology for restoring ecology of mining area

A technology of coal gangue and fly ash, applied in the direction of biological sludge treatment, restoration of polluted soil, etc., to achieve the effect of increasing organic matter and biological enzyme activity, improving soil bulk density and pore status, and increasing biological activity

Inactive Publication Date: 2010-12-22
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, it has been reported that the ecological restoration of mining areas requir

Method used

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  • Coal gangue-fly ash-sludge substrate and mycorrhiza technology for restoring ecology of mining area
  • Coal gangue-fly ash-sludge substrate and mycorrhiza technology for restoring ecology of mining area
  • Coal gangue-fly ash-sludge substrate and mycorrhiza technology for restoring ecology of mining area

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Embodiment Construction

[0024] The technology that the present invention proposes to be used for mining area ecological restoration, in conjunction with example is described in detail as follows:

[0025] The composite matrix of the invention mainly includes coal gangue, fly ash, sludge and mycorrhizae.

[0026] The composite matrix formula of the present invention: 50-70% of coal gangue, 10-20% of fly ash, and 10-30% of sludge. After mixing, the nutrient concentration of the matrix is: total nitrogen is 2.00-4.00g / kg, available phosphorus is 34.00-63.00mg / kg, and available potassium is 216.00-284.00mg / kg.

[0027] Test plants: leguminous plants and gramineous plants were purchased from related grass companies.

[0028] The test matrix: fly ash 10-20%, coal gangue 50-70%, sludge 10-30%. The physical and chemical properties of the composite matrix are shown in the table below.

[0029]

[0030] Among them, fly ash: from Maocun Power Plant;

[0031] Coal gangue: it is taken from the gangue at th...

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Abstract

The invention relates to a coal gangue-fly ash-sludge substrate and a mycorrhiza technology for restoring ecology of a mining area. The invention belongs to the technical field of environmental protection, and relates to an ecology restoring technology, in particular to a method for restoring the ecology of an abandoned coal mine area. The method for restoring the abandoned coal mine area by the mycorrhiza technology of the invention adopts a composite substrate prepared by mixing fly ash, coal gangue and sludge, and comprises the following steps: a, preparing an inoculant; b, preparing a basic plant material; c, carrying out inoculating mycorrhiza treatment on the plant by the inoculant obtained in the step a; d, analyzing the physicochemical property of the abandoned coal mine area, and carrying out mixed treatment to form the composite substrate; and e, sowing seeds on the composite substrate surface layer of the treated abandoned coal mine area. The method of the invention can improve the adaptability of plants to the complex adverse environment of the abandoned coal mine area, wherein the adaptability comprises stronger nutrient acquisition capability and cold resistance, thereby fully utilizing waste and sludge in the mining area, and solving the source problem of other soil for melioration in the mining area.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to the recovery technology of polluted organisms, in particular to a method for ecological restoration of abandoned coal mine land. Background technique [0002] Due to the disturbance of the soil structure in the mining area, the lack of mature soil, the soil is poor, and its microbial activity has been minimal. The reduction of the microbial population has also destroyed the underground mycelial bridge, making it difficult to carry out reclamation smoothly. The land reclamation of most mines in my country only stays at the level of engineering reclamation. At present, most of the filling reclamation is mainly based on mine coal gangue and fly ash filling from pithead power plants, which have poor water holding capacity, extreme physical and chemical properties, and low fertility. The low-level characteristics make it difficult for plants to grow, and the reclamation ...

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Application Information

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IPC IPC(8): B09C1/10C02F11/02
Inventor 王丽萍周敏何士龙钱奎梅
Owner CHINA UNIV OF MINING & TECH
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