Concealed conduit system, paving method and application thereof

Abstract

The invention provides a concealed conduit system, a paving method and an application thereof. The system comprises a concealed conduit and water collecting wells; the concealed conduit comprises a water exhausting conduit and a water collecting conduit, and the water exhausting conduit and the water collecting conduit are arranged in a vertically crossed mode or in obliquely crossed herringbone mode; the water collecting wells are sequentially arranged in the direction of the water collecting conduit; and the water exhausting conduit is provided with holes, and the water collecting conduit isnot provided with a hole. The concealed conduit system is reasonably arranged, a proper eluting agent is added, so that heavy metals in the polluted soil can be in situ and efficiently removed, the removal efficiency of the heavy metals such as lead, cadmium and zinc can reach 50-90%, and the soil treatment effect is good; the system belongs to an environment-friendly treatment mode, so that thedamage to the soil is small, the soil fertility is not reduced; and the system is suitable for treating the soil polluted by the various kinds of the heavy metals, the operation cost is low, and the economical efficiency is high.

Description

technical field

[0001] The invention belongs to the technical field of soil pollution control, and relates to a hidden pipe system, its laying method and application, in particular to a dark pipe system, its laying method and its application for removing heavy metals in polluted soil. Background technique

[0002] Soil pollution refers to the phenomenon that harmful substances produced by human activities enter the soil. When the content exceeds the self-purification ability of the soil itself, it will cause changes in the composition and properties of the soil, reduce the yield and quality of crops, and endanger human health. Heavy metals are One of the most important soil pollutants, it is difficult to be degraded naturally, only changes in form and migration. Generally speaking, the main ways to remediate heavy metal-contaminated soil include: changing the existing state of heavy metals, reducing their activity, making them inactive, leaving the food chain, and reducing t...

Examples

Embodiment 1

[0080] This embodiment provides a hidden pipe system and its laying method, the structural diagram of the system is as follows figure 1 As shown, it includes a hidden pipe and a water collection well 4. The hidden pipe includes a drainage pipe 1 and a water collection pipe 2. They are arranged in sequence; the drainage pipe 1 is provided with holes, and the water collecting pipe 2 is not provided with holes.

[0081] Wherein, the drainage pipe 1 is a plastic pipe with corrugated holes and its diameter is 100 mm, and the water collecting pipe 2 is a plastic pipe without holes and its diameter is 180 mm; the drainage pipe 1 is coated with a water-permeable non-woven fabric.

[0082] A plurality of said drainage pipes 1 are arranged in parallel, the distance between adjacent drainage pipes 1 is 6m, and a plurality of said water collection pipes 2 are arranged in parallel, and the distance between adjacent water collection pipes 2 is also 6m. The gradient in both directions is 4‰...

Embodiment 2

[0090] This embodiment provides a hidden pipe system and its laying method, the structural diagram of the system is as follows figure 2 As shown, it includes a hidden pipe and a water collection well 4. The hidden pipe includes a drainage pipe 1 and a water collection pipe 2. The drainage pipe 1 and the water collection pipe 2 are arranged in an oblique herringbone shape, and the angle between the two is 60 degrees. The water collection wells 4 are arranged in sequence along the direction of the water collection pipe 2; the drainage pipe 1 is provided with holes, and the water collection pipe 2 is not provided with holes.

[0091] Wherein, the drainage pipe 1 is a plastic pipe with corrugated holes and its diameter is 80 mm, and the water collecting pipe 2 is a plastic pipe without holes and its diameter is 150 mm; the drainage pipe 1 is coated with a water-permeable non-woven fabric.

[0092] A plurality of said drainage pipes 1 are arranged in parallel, the distance between...

Embodiment 3

[0100] This embodiment provides a hidden pipe system and a laying method thereof, the system includes a hidden pipe and a water collection well 4, the hidden pipe includes a drain pipe 1 and a water collection pipe 2, and the drain pipe 1 and the water collection pipe 2 are arranged vertically Arranged in the form of a cross, the water collection wells 4 are sequentially arranged along the direction of the water collection pipe 2; the drainage pipe 1 is provided with holes, and the water collection pipe 2 is not provided with holes.

[0101] Wherein, the drainage pipe 1 is a plastic pipe with corrugated holes, and its diameter is 110 mm, and the water collecting pipe 2 is a plastic pipe without holes, and its diameter is 200 mm; the drainage pipe 1 is coated with a water-permeable non-woven fabric.

[0102] A plurality of drain pipes 1 are arranged in parallel, the distance between adjacent drain pipes 1 is 10m, and a plurality of said water collecting pipes 2 are arranged in p...

technical field

[0001] The invention belongs to the technical field of soil pollution control, and relates to a hidden pipe system, its laying method and application, in particular to a dark pipe system, its laying method and its application for removing heavy metals in polluted soil. Background technique

[0002] Soil pollution refers to the phenomenon that harmful substances produced by human activities enter the soil. When the content exceeds the self-purification ability of the soil itself, it will cause changes in the composition and properties of the soil, reduce the yield and quality of crops, and endanger human health. Heavy metals are One of the most important soil pollutants, it is difficult to be degraded naturally, only changes in form and migration. Generally speaking, the main ways to remediate heavy metal-contaminated soil include: changing the existing state of heavy metals, reducing their activity, making them inactive, leaving the food chain, and reducing t...

Examples

Embodiment 1

[0080] This embodiment provides a hidden pipe system and its laying method, the structural diagram of the system is as follows figure 1 As shown, it includes a hidden pipe and a water collection well 4. The hidden pipe includes a drainage pipe 1 and a water collection pipe 2. They are arranged in sequence; the drainage pipe 1 is provided with holes, and the water collecting pipe 2 is not provided with holes.

[0081] Wherein, the drainage pipe 1 is a plastic pipe with corrugated holes and its diameter is 100 mm, and the water collecting pipe 2 is a plastic pipe without holes and its diameter is 180 mm; the drainage pipe 1 is coated with a water-permeable non-woven fabric.

[0082] A plurality of said drainage pipes 1 are arranged in parallel, the distance between adjacent drainage pipes 1 is 6m, and a plurality of said water collection pipes 2 are arranged in parallel, and the distance between adjacent water collection pipes 2 is also 6m. The gradient in both directions is 4‰...

Embodiment 2

[0090] This embodiment provides a hidden pipe system and its laying method, the structural diagram of the system is as follows figure 2 As shown, it includes a hidden pipe and a water collection well 4. The hidden pipe includes a drainage pipe 1 and a water collection pipe 2. The drainage pipe 1 and the water collection pipe 2 are arranged in an oblique herringbone shape, and the angle between the two is 60 degrees. The water collection wells 4 are arranged in sequence along the direction of the water collection pipe 2; the drainage pipe 1 is provided with holes, and the water collection pipe 2 is not provided with holes.

[0091] Wherein, the drainage pipe 1 is a plastic pipe with corrugated holes and its diameter is 80 mm, and the water collecting pipe 2 is a plastic pipe without holes and its diameter is 150 mm; the drainage pipe 1 is coated with a water-permeable non-woven fabric.

[0092] A plurality of said drainage pipes 1 are arranged in parallel, the distance between...

Embodiment 3

[0100] This embodiment provides a hidden pipe system and a laying method thereof, the system includes a hidden pipe and a water collection well 4, the hidden pipe includes a drain pipe 1 and a water collection pipe 2, and the drain pipe 1 and the water collection pipe 2 are arranged vertically Arranged in the form of a cross, the water collection wells 4 are sequentially arranged along the direction of the water collection pipe 2; the drainage pipe 1 is provided with holes, and the water collection pipe 2 is not provided with holes.

[0101] Wherein, the drainage pipe 1 is a plastic pipe with corrugated holes, and its diameter is 110 mm, and the water collecting pipe 2 is a plastic pipe without holes, and its diameter is 200 mm; the drainage pipe 1 is coated with a water-permeable non-woven fabric.

[0102] A plurality of drain pipes 1 are arranged in parallel, the distance between adjacent drain pipes 1 is 10m, and a plurality of said water collecting pipes 2 are arranged in p...

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