Ecological restoration method of solid waste yards

A technology for solid waste and ecological restoration, applied in solid waste removal, botany equipment and methods, plant cultivation, etc., can solve surface water and groundwater pollution, ecological environment damage, damage to land, natural landscape and vegetation, etc.

Inactive Publication Date: 2017-05-10
HUNAN XISI ECOLOGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since there is no mandatory classification of garbage in China, and there is no habit of garbage classification, solid waste, especially solid waste from mines, is inevitably mixed with heavy metal residues and toxic chemical waste, piled up on the surface of the land, destroying the surface of the land, Natural landscape and vegetation, soil erosion intensifies, causing serious damage to the ecological environment, and the heavy metal content and chemical agents in solid waste are high, causing serious pollution to surface water and groundwater

Method used

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  • Ecological restoration method of solid waste yards
  • Ecological restoration method of solid waste yards

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Depend on figure 1 It can be seen that a method for ecological restoration of a solid waste dump site comprises the following steps:

[0018] (1) Mix the solid waste in the storage yard with fixative and water evenly, and roll and compact it;

[0019] ⑵In the process of compaction, make the central position of the stacking yard the high point, and gradually incline towards the periphery with a slope of 5°<slope<45°;

[0020] (3) Place an anti-seepage layer on the compacted solid waste, and pile clay with a thickness of 10cm to 20cm on the anti-seepage layer for compaction;

[0021] ⑷Pile a sand layer with a thickness of 1cm to 3cm on the compacted clay and compact it;

[0022] (5) Lay cultivation soil with a thickness of 30cm to 45cm on the compacted sand layer, and plant saplings or grass seedlings on the cultivation soil.

[0023] The anti-seepage layer of the present invention is non-woven fabric or waterproof blanket.

[0024] In this embodiment, firstly, the so...

Embodiment 2

[0030] Depend on figure 2 It can be seen that in order to prevent the anti-seepage layer 3 from moving on the solid waste 1, in the step (3) of the present invention, firstly, the clay 2 with a thickness of 10 cm to 20 cm is stacked on the compacted solid waste 1 and compacted; Place the anti-seepage layer 3, and then pile up the clay 2 with a thickness of 10cm to 20cm on the anti-seepage layer 3, and compact it.

[0031] The anti-seepage layer 3 of this embodiment adopts a waterproof blanket, and the waterproof blanket is a bentonite waterproof blanket, which is made of graded natural sodium bentonite particles and corresponding admixtures mixed as raw materials. A blanket-like waterproofing membrane fixed between geotextiles and plastic woven fabrics. Bentonite waterproof blanket not only has all the characteristics of geotechnical materials, but also has excellent waterproof (seepage) performance.

[0032] In this way, the anti-seepage layer 3 is difficult to move on the...

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Abstract

The invention discloses a method for ecological restoration of solid waste yards including heavy metal residues and toxic chemical waste. Its feature is that it comprises the following steps :( 1) the solid wastes in the yards are mixed uniformly with fixing agent and water, and then rolled in compaction. (2)In the process of compaction, the center position of yards is the high spot, the slope gradually tilted to the surrounding with a degree more than 5 degrees less than 45 degrees; (3) after the compaction of solid wastes,an impervious layer is placed on the solid wastes, then pile and compact the clay of thickness of 10 cm - 20 cm on impermeable layer; (4) a sand layer of thickness of 1 cm to 3 cm is placed and compacted on the compacted clay;(5) soil of cultivation of thickness of 30 cm - 45 cm is laid on the compacted sand layer, trees or grass seedlings are planted on the soil of cultivation ; the invention adopts the non-woven fabric and waterproof blanket in the clay to closed solid waste ,pollutants is effectively prevented from leaking into the water and spreading out; Grass and trees are planted on top of the cultivated soil to achieve the goal of ecological restoration of solid waste yards.

Description

technical field [0001] The invention relates to a waste treatment method, in particular to an ecological restoration method for a solid waste dump, in particular to an ecological restoration method for a solid waste dump including heavy metal residues and toxic chemical waste. Background technique [0002] At present, due to industrialization and urbanization, many solid wastes such as industrial waste and domestic waste are piled up around factories, mines or cities. Since there is no mandatory classification of garbage in China, and there is no habit of garbage classification, solid waste, especially solid waste from mines, is inevitably mixed with heavy metal residues and toxic chemical waste, piled up on the surface of the land, destroying the surface of the land, Natural landscape and vegetation, water and soil erosion intensified, causing serious damage to the ecological environment, and the heavy metal content and chemical agents in the solid waste were more, causing ...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G17/00E02D31/00B09B1/00
CPCA01G17/005A01G20/00B09B1/00E02D31/006
Inventor 张卫王勇坚娄志平谢施施
Owner HUNAN XISI ECOLOGY TECH
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