Reclamation soil matrix in waste slag field and preparation method and application

A technology of waste slag field and soil, which is applied in the fields of botanical equipment and methods, application, substrate fertilizer, etc., can solve the problems of long time, difficult disposal of large amount of engineering waste slag, and difficulty in reclamation of waste slag field.

Active Publication Date: 2022-08-02
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of difficult reclamation of expressway waste slag field, long time, and large amount of engineering waste slag, which is difficult to dispose of, and provides a soil matrix for reclamation based on solid waste resource utilization

Method used

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  • Reclamation soil matrix in waste slag field and preparation method and application
  • Reclamation soil matrix in waste slag field and preparation method and application
  • Reclamation soil matrix in waste slag field and preparation method and application

Examples

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Effect test

Embodiment 1

[0043] Example 1 (J1)

[0044]This embodiment provides a soil matrix for reclamation of expressway waste slag field, which is composed of 73.6% red clay, 18.4% engineering waste slag, 3% organic fertilizer, and 5% pine needles.

[0045] The red clay and engineering waste were taken from the Yunmogou waste slag yard of Yangmang Expressway, Yangcheng City, Shanxi Province, and were screened and air-dried for later use. The basic physical and chemical properties of red clay are alkaline hydrolyzable nitrogen content of 80 mg / kg, available phosphorus content of 6.6 mg / kg, available potassium content of 68 mg / kg, organic matter content of 13.4 g / kg and PH of 7.01. The intermediate gradation of red clay is: 3 . The basic physicochemical properties of the engineering waste slag are alkaline hydrolysis nitrogen 9.8mg / Kg, available phosphorus content 2.3mg / Kg, available potassium content 14.1mg / Kg, organic matter content 0.3g / kg, PH 7.63. The particle size ratio of ≤0.25mm accounts f...

Embodiment 21

[0054] Example 2.1 (J2)

[0055] Different from Example 1, the soil matrix is ​​composed of 72% red clay, 18% engineering waste slag, 5% organic fertilizer, and 5% sheared pine needles by mass percentage.

Embodiment 22

[0056] Example 2.2 (J3)

[0057] Different from Example 1, the soil matrix is ​​composed of 69.6% red clay, 17.4% engineering waste slag, 8% organic fertilizer, and 5% sheared pine needles by mass percentage.

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Abstract

The invention provides a soil matrix for reclamation of a waste slag field, which comprises, by mass percentage, 40-75% of original soil, 10-50% of engineering waste, 3-8% of organic fertilizer, and 3-7% of pine needles, wherein Original soil: engineering waste = 1:1‑4:1. At the same time, the preparation method and application thereof are provided. The soil matrix for reclamation of the invention can effectively dispose of a large amount of waste residue in the waste residue field, promote the growth of plants, and improve the survival rate. The natural soil, engineering waste residue and pine needles in the matrix form a loose and porous soil structure, which is conducive to soil ventilation and water transmission, the formation of aggregates in the soil, and the survival and reproduction of microorganisms. Organic fertilizer can effectively improve soil fertility, improve the originally barren engineering waste and natural soil, provide nitrogen, phosphorus, potassium, organic matter and other nutrients required for plant growth and development, and can passivate heavy metals contained in urban sludge. , reduce the possible harm caused by heavy metals in soil. The main materials are widely available and inexpensive.

Description

technical field [0001] The invention relates to the field of ecological restoration of a highway waste slag field, in particular to a method for improving a soil matrix for the reclamation of a waste slag field, and simultaneously provides a soil matrix for the reclamation of a waste slag field and a preparation method and application thereof. Background technique [0002] Today, when land resources are increasingly scarce and the pressure on land protection is increasing, the large-scale construction and planning of highways have brought greater challenges to the protection of cultivated land and the promotion of intensive land use. Therefore, how to control and reduce a series of land damages caused by highways and restore the production and use capacity of the destroyed land through reclamation has become a must for all parties involved in highway planning, design, construction, and operation and management. and solving real-world problems. At the same time, the connotat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G24/22A01G24/12C05G3/00C05G5/40C05F17/10C05F17/80
CPCA01G24/22A01G24/12C05G3/00C05D9/00C05G5/40C05F17/10C05F17/80C05F3/00C05F5/002C05F7/00C05F11/00Y02W30/40
Inventor 秦晓春邢云虎倪安辰康智鹏樊开盼孟秀元赵彦博
Owner BEIJING JIAOTONG UNIV
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