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Preparation mold and preparation method of special filler for constructed wetland

A technology of constructed wetlands and molds, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problem that there is no good balance between the density of air holes and the overall structural strength, ignoring constructed wetlands The overall structural strength of the special filler, the effect of the maximum efficiency, etc., to achieve the effect of increasing strength, reducing weight, and high adsorption efficiency

Active Publication Date: 2021-09-24
南京沃谱瑞环境研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a mold for the preparation of special fillers for constructed wetlands and its preparation method to solve the problem of the existing special fillers for constructed wetlands. Often in order to increase the passing rate, it is possible to increase the number of air holes, but the overall structural strength of the special filler for the constructed wetland is ignored, resulting in a lack of a good balance between the air hole density and the overall structural strength, resulting in constant The question of whether or not the effect of maximum efficiency

Method used

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  • Preparation mold and preparation method of special filler for constructed wetland
  • Preparation mold and preparation method of special filler for constructed wetland
  • Preparation mold and preparation method of special filler for constructed wetland

Examples

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preparation example Construction

[0032] A mold for preparing special fillers for artificial wetlands, which also includes a lower mold 5 and an upper mold 2 matching its top. The lower mold 5 is in two detachable parts, and a limiting chute 7 is formed between them. The limiting chute 7. The inside is slidingly connected to the limit ring 4. A part of the top of the lower mold 5 is fixedly connected to a fixed ring 8. The outer side of the fixed ring 8 is processed with external threads. The inner mold 9 with the same center of circle is arranged inside the lower mold 5. A plurality of circular hole columns 6 are evenly and fixedly connected, and the outer sides of the plurality of circular hole columns 6 are all in contact with the inner wall of the lower mold 5 .

[0033] The bottom of the upper mold 2 is provided with an annular fixed ring groove 10, and the outer circle of the fixed ring groove 10 is processed with an internal thread on the upper mold 2, and the upper mold 2 is compatible with the external...

Embodiment 1

[0043] Embodiment 1: The components of the filler and the percentage by weight of each component are: 10% of dry sludge, 20% of clay, 12% of straw, 55% of ceramsite, and 5% of foaming agent; into silk, and the cross-sectional diameter of the straw silk is 1 mm, and the clay is ordinary clay. After the dry sludge, clay, shredded straw and foaming agent are stirred and mixed uniformly by a conventional mixing method, the mixed material Pour it into the existing mold, shape it into a spherical or rectangular shell, and form an internal cavity, and the formed shell is two halves that can be assembled into a spherical or rectangular splicing piece, and the ceramsite is wrapped with a degradable film. Then put the wrapped, sealed and wrapped ceramsite into the cavity inside the shell, and then form a complete spherical or rectangular shape with two splicing pieces and fix them into shape;

Embodiment 2

[0044] Embodiment 2: The components of the filler and the percentage by weight of each component are: 12% of dry sludge, 23% of clay, 17% of straw, 40% of ceramsite, and 8% of foaming agent; into silk, and the cross-sectional diameter of the straw silk is 3mm, and the clay is a mixture of red mud and ordinary clay. After the dry sludge, clay, shredded straw and foaming agent are stirred and mixed uniformly by a conventional mixing method, Pour the mixed material into the existing mold, shape it into a spherical or rectangular shell, and form an internal cavity, and the formed shell is two halves that can be assembled into a spherical or rectangular splicing piece. The ceramsite can be used Wrap it with a degradable film, then put the wrapped sealed and wrapped ceramsite into the cavity inside the shell, and then form a complete spherical or rectangular shape with two splicing pieces and fix it;

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Abstract

The invention discloses a preparation mold and a preparation method of a special filler for a constructed wetland. The filler comprises the following components in percentage by weight: 10-15% of dry sludge, 15-30% of clay, 5-20% of straw, 30-60% of ceramsite and 3-10% of a foaming agent. The straw is cut into shreds, the diameter of the section of the straw shreds is 1-5 mm, the clay is one of common clay, mixed soil of red mud and common clay or mixed soil of common clay and cement, the phosphorus adsorption efficiency is high, the maximum adsorption capacity of the common fly ash is that 1 kg of fly ash absorbs 2-5 g of phosphorus, and 1 kg of special filler for the constructed wetland contains about 30-90 g of phosphorus, which is 15 times or more than that that of the common fly ash; the straw filament mixed clay and the cement are adopted to increase the overall structural strength, the cement structure is adopted to support, but is not mainly the cement, such that the overall weight can be reduced, the mixed straw filament is adopted to increase the structural toughness and the structural strength, and the damage rate is reduced; by means of the arrangement of the degradable film, the filler can be degraded through the degradable film after being put into use.

Description

technical field [0001] The invention belongs to the technical field of constructed wetlands, and in particular relates to a mold for preparing special fillers for constructed wetlands and a preparation method thereof. Background technique [0002] Water eutrophication pollution has become a major problem in my country's environmental pollution. At present, the methods for phosphorus removal at home and abroad mainly include biological methods and physical and chemical methods. For example, the chemical coagulation and precipitation method has high efficiency in phosphorus treatment and is easy to operate, but it produces a large amount of difficult-to-treat sludge and the high salt concentration in the effluent limits its popularization and application; while the biological phosphorus removal process requires high requirements in operation and management , it is difficult to achieve the desired effect. [0003] Constructed wetland system refers to the wetland formed by hum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/32B01J20/24B01J20/28B01J20/30C02F101/10
CPCC02F3/105C02F3/32B01J20/24B01J20/28011B01J20/3064B01J20/3007C02F2101/105Y02W10/10
Inventor 尤朝阳陈雷孙永军吕进顾军张志豪
Owner 南京沃谱瑞环境研究院有限公司
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