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Waste residue field reclamation soil matrix as well as preparation method and application

A technology for 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 difficult reclamation of waste slag field, difficult disposal of large amount of engineering waste slag, and long time.

Active Publication Date: 2020-12-15
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Waste residue field reclamation soil matrix as well as preparation method and application
  • Waste residue field reclamation soil matrix as well as preparation method and application
  • Waste residue field reclamation soil matrix as well as preparation method and application

Examples

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Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 (J1)

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

[0045] The red clay and engineering waste were taken from the Yunmogou waste yard of Yangmang Expressway, Yangcheng City, Shanxi Province, and were sieved and air-dried for later use. The basic physical and chemical properties of red clay are alkaline hydrolysis nitrogen content of 80mg / kg, available phosphorus content of 6.6mg / kg, available potassium content of 68mg / kg, organic matter content of 13.4g / kg, pH of 7.01, and the gradation of red clay: 3 . The basic physical and chemical properties of 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, engineering waste slag The particle size ratio of ≤0.25mm accounts for 12...

Embodiment 21

[0054] Example 2.1 (J2)

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

Embodiment 22

[0056] Example 2.2 (J3)

[0057] The difference from Example 1 is that the soil matrix is ​​composed of 69.6% red clay, 17.4% engineering waste, 8% organic fertilizer and 5% shredded pine needles in terms of mass percentage.

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Abstract

The invention provides a waste residue field reclamation soil matrix which comprises, by mass, 40%-75% of original soil, 10%-50% of engineering waste residues, 3%-8% of organic fertilizer and 3%-7% ofpine needles, and the ratio of the original soil to the engineering waste residues is 1:1-4:1. Meanwhile, the invention provides a preparation method and application thereof. According to the reclamation soil matrix, a large number of waste residues in a waste residue field can be effectively disposed, growth of plants is promoted, and the survival rate is increased. The natural soil, the engineering waste residues and the pine needles in the matrix form a loose and porous soil structure, so that air permeability and moisture transmission of soil are facilitated, formation of aggregates in the soil is facilitated, and survival and propagation of microorganisms are also facilitated. The organic fertilizer can effectively improve the fertility of the soil, improve original barren engineering waste residues and natural soil, provide nitrogen, phosphorus, potassium, organic matter and other nutrients needed by growth and development of plants, play a role in passivating heavy metal contained in municipal sludge and reduce harm possibly brought by the heavy metal in the soil. Main materials are wide in source and low in cost.

Description

technical field [0001] The invention relates to the field of ecological restoration of expressway waste dumps, in particular to a method for improving soil substrates for reclamation of waste dumps, and simultaneously provides a soil substrate for waste dumps reclamation and its preparation method and application. 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 use of land. Therefore, how to control and reduce a series of land damage caused by highways, and restore the production and use capacity of the destroyed land through reclamation has become a must for all parties in highway planning, design, construction, and operation management. and solve real problems. At the same time, the connotation of land reclamation has also been improved, ...

Claims

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Application Information

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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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