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Method for constructing soil percolation bed body for sewage treatment in cold areas

A technology of sewage treatment and soil infiltration, applied in biological water/sewage treatment, water/sludge/sewage treatment, biological treatment devices, etc. Wide source, the effect of improving crop yield

Inactive Publication Date: 2017-04-26
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the method is implemented, it can increase the microbial activity in the soil to a certain extent, keep the system stable, and effectively solve the problem of poor treatment effect of the underground infiltration system in winter.

Method used

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  • Method for constructing soil percolation bed body for sewage treatment in cold areas

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Effect test

Embodiment 1

[0046] A method for constructing a soil infiltration bed applied to sewage treatment in cold regions, comprising the following steps:

[0047] (1) Excavate the percolation bed body, the depth of the percolation bed body is 1.5m, after the percolation bed body is compacted with concrete around the percolation bed body, a layer of high-density polyethylene film 6 is laid to prevent groundwater from being polluted; wherein, the concrete is made of Clay and expanded perlite bulk materials are prepared at a volume ratio of 3:1;

[0048] (2) Lay the water collecting pipe 4 that carries out uniform punching on the side wall in advance at the bottom of the percolation bed body, wherein the perforated aperture is 5mm, the hole spacing is 10cm, the water collecting pipe 4 is laid with a slope of 3%, and the water collecting pipe 4 outer diameter 150mm, and gravel 5 is laid around the water collecting pipe 4, and the thickness of the gravel 5 is 0.15m;

[0049] (3) Laying artificial soi...

Embodiment 2

[0056] A method for constructing a soil infiltration bed applied to sewage treatment in cold regions, comprising the following steps:

[0057] (1) Excavate the infiltration bed body, the depth of the infiltration bed body is 1.8m, after the percolation bed body is compacted with concrete around the infiltration bed body, a layer of high-density polyethylene film 6 is laid to prevent the groundwater source from being polluted; wherein, the concrete is made of Clay and expanded perlite bulk materials are prepared at a volume ratio of 3:1;

[0058] (2) Lay the water collecting pipe 4 that carries out uniform punching on the side wall in advance at the bottom of the percolation bed body, wherein, the perforated aperture is 10mm, the hole spacing is 20cm, the water collecting pipe 4 is laid with a slope of 4%, and the water collecting pipe 4 outer diameter 200mm, and gravel 5 is laid around the water collecting pipe 4, and the thickness of the gravel 5 is 0.2m;

[0059] (3) lay ar...

Embodiment 3

[0066] A method for constructing a soil infiltration bed applied to sewage treatment in cold regions, comprising the following steps:

[0067] (1) Excavate the percolation bed body, the depth of the percolation bed body is 2.0m, after the percolation bed body is compacted with concrete around the percolation bed body, a layer of high-density polyethylene film 6 is laid to prevent the groundwater source from being polluted; wherein, the concrete is made of Clay and expanded perlite bulk materials are prepared at a volume ratio of 3:1;

[0068] (2) Lay the water collecting pipe 4 that is uniformly punched on the side wall in advance at the bottom of the percolation bed body, wherein the perforated aperture is 15mm, the hole spacing is 30cm, the water collecting pipe 4 is laid with a gradient of 5%, and the water collecting pipe 4 outer diameter 250mm, and gravel 5 is laid around the water collecting pipe 4, and the thickness of the gravel 5 is 0.25m;

[0069] (3) Lay artificial...

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Abstract

The invention discloses a method for constructing a soil percolation bed body for sewage treatment in cold areas. The method comprises the following steps: (1) digging a percolation bed body, compacting the percolation bed body around by using concrete, and paving a layer of high-density polyethylene film; (2) paving a water collection tube at the bottom of the percolation bed body, and paving gravel around the water collection tube; (3) paving an artificial soil layer above the gravel; (4) paving an anaerobic tank above the artificial soil layer, and filling the anaerobic tank with a mixture of gravel and expanded perlite bulk cargos; (5) paving a water dispersion tube right above the anaerobic tank; (6) paving cultivated soil above the artificial soil layer; and (7) paving straw on the surface of the cultivated soil, and paving non-woven cloth above the straw, thereby completing the soil percolation bed body for sewage treatment. The soil percolation bed body for sewage treatment in cold areas, which is constructed by using the method, is not affected by seasons, is wide in application range and is particularly applicable to cold areas, and the water quality of the effluent obtained after treatment can meet landscape surface water environment quality standards.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of sewage treatment, and in particular relates to a construction method of a soil infiltration bed applied to sewage treatment in cold regions. [0003] Background technique: [0004] The sewage underground infiltration system is a small natural sewage purification system. The technological process of sewage underground infiltration treatment is: first, the sewage is dosed in a controlled manner into the soil layer with a certain structure and good diffusion performance; then, the sewage is infiltrated into the surrounding four-dimensional under the action of soil capillary infiltration and soil infiltration. Diffusion movement; finally, the sewage is purified under the joint action of physics / chemistry / plants / microorganisms, and the effluent is collected by the water collection pipe and reused. The underground infiltration system has the advantages of good water quality, low investment, simple manag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/32
CPCC02F3/32C02F3/34C02F2203/006
Inventor 李英华王瑶张晓晓翁焕勇
Owner NORTHEASTERN UNIV
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