Constructed wetland padding brick and preparation method thereof

A technology of artificial wetland filler and artificial wetland, which is applied in the field of artificial wetland filler bricks and its preparation, to achieve the effects of facilitating attachment and growth, improving the effect of sewage treatment, and avoiding plugging of fillers

Inactive Publication Date: 2013-02-20
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new type of artificial wetland filler and its preparation method which is convenient for installation and transportation, has optimized performance and stable treatment effect, and aims to solve the shortcomings of existing artificial wetland fillers

Method used

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  • Constructed wetland padding brick and preparation method thereof

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Embodiment Construction

[0011] Such as figure 1 As shown, an artificial wetland filler brick is a regular hexagonal prism structure, and its specific dimensions are as follows: the side length is 8-12cm, and the height is 40-50cm. In order to avoid clogging, provide an environment more conducive to the growth of microorganisms, and improve the sewage treatment effect of wetlands, the porosity of the filler is determined to be ≥ 30%, and the bulk density is 1.2×10 3 —1.5×10 3 Kg / m 3; , the water permeability rate is 15-20m / h, the mass ratio of filler bricks is limestone with a particle size of 2-8mm, 30-40% of cinder with a particle size of 3-10mm, 5-10% of fly ash with a particle size of <2mm, and 15-20 % clay with particle size <2mm, 15-25% volcanic rock with particle size 3-8mm, 5-10% modified diatomite with particle size 2-8mm and 10-15% water.

[0012] Preparation method: (1) At room temperature, add limestone, coal cinder, fly ash, clay, volcanic rock, modified diatomite and water in propo...

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Abstract

The invention discloses a constructed wetland padding brick and a preparation method thereof and belongs to the field of sewage treatment. The brick is a hexagonal prism with side length of 8-12cm and height of 40-50cm. The preparation method includes proportionally adding and evenly stirring, by mass, 10-15% of limestone with particle sizes of 2-8mm, 30-40% of coal cinder with particle sizes of 3-10mm, 5-10% of coal ash with particle sizes smaller than 2mm, 15-20% of clay with particle sizes smaller than 2mm, 15-25% of volcanic rock with particle sizes of 3-8mm, 5-10% of modified infusorial earth with particle sizes of 2-8mm and 10-15% of water at normal temperatures, pouring slurries into a corresponding mold, performing compression molding under the pressure of 80-120Pa/mm<2>, and then performing demolding and natural air drying to obtain the constructed wetland padding brick. The brick is applicable to constructed wetlands, simple in structure, convenient to install and transport, unobstructed in water flow, stable in treating efficiency and capable of preventing blocking and facilitating apposition growth of microorganisms.

Description

[0001] technical field [0002] The invention belongs to the technical field of sewage treatment. Specifically, it relates to a constructed wetland filler brick and a preparation method thereof, which are used in constructed wetlands to stably remove pollutants in water bodies. Background technique [0003] With the development of society and the continuous expansion of industry, the pollution caused by human activities to the environment is intensifying, among which the pollution of water environment bears the brunt. A large amount of industrial wastewater, domestic sewage, and mining wastewater are discharged into water bodies, posing a great threat to the water environment and human living conditions. [0004] As the most commonly used semi-ecological sewage treatment system, constructed wetland has the advantages of low investment and operation cost, low energy consumption, good treatment effect, and beautification of the environment. It uses the joint action of soil, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00C04B38/08
Inventor 解清杰姚一凡蒋志辉黄晓龙周清时袁广娇
Owner JIANGSU UNIV
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