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Slow-release oxygen material layer of sunken green space and preparation method thereof

A slow-release oxygen and material layer technology, applied in the direction of oxygen preparation, clay preparation equipment, chemical instruments and methods, etc., can solve the problem of high concentration of organic matter in intercepted saturated soil, achieve long oxygen release cycle, improve rainwater purification effect, and apply broad effect

Active Publication Date: 2018-06-19
荥阳市清源水务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Removal of organic pollutants in sunken green land by physical interception will inevitably lead to the problem of interception saturation and excessive concentration of soil organic matter. must do

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The slow-release oxygen material layer of the sunken green space of the present invention is formed by mixing the following components by weight percentage: 15% calcium peroxide, 15% magnesium peroxide; 8% vermiculite, 8% sludge nutrient soil, 8% acid-modified attapulgite, 1% superabsorbent resin; 10% river sand, 10% ceramsite, 2% bamboo fiber; 2% blast furnace slag, 1% potassium dihydrogen phosphate; 6% kaolin, 6% Mongolian Destoned, 6% illite, 2% resin.

[0026] The slow-release oxygen material layer of the sunken green space prepared by using the above-mentioned formula quantity is 2.0cm×2.0cm×2.0cm, its average strength is 287N, and the porosity is 46.2%.

[0027] In the static test with dosage of 3mg / L, DO (dissolved oxygen) concentrations in water at 3h, 6h, and 12h were 3.09mg / L, 6.46mg / L, and 8.45mg / L, respectively, and the pHs were 6.61, 6.68, and 7.81, respectively. , the average oxygen release rate can reach 0.046mg / (d·g).

Embodiment 2

[0029] The slow-release oxygen material layer of the sunken green space of the present invention is formed by mixing the following components by weight percentage: 30% calcium peroxide, 10% magnesium peroxide; 5% vermiculite, 10% sludge nutrient soil, 5% acid-modified attapulgite; 12% ceramsite, 8% bamboo fiber; 3% blast furnace slag, 2% potassium dihydrogen phosphate; 4% kaolin, 7% montmorillonite, 4% illite.

[0030] The slow-release oxygen material layer of the sunken green space prepared by using the above-mentioned formula has a size of 2.0cm×2.0cm×2.0cm, an average strength of 241N, and a porosity of 53.8%.

[0031] In the static test with dosage of 3mg / L, DO (dissolved oxygen) concentrations in water at 3h, 6h, and 12h were 3.96mg / L, 6.41mg / L, and 8.89mg / L, respectively, and the pHs were 6.75, 7.47, and 7.95, respectively. , the average oxygen release rate can reach 0.055mg / (d·g).

Embodiment 3

[0033] The slow-release oxygen material layer of the sunken green space of the present invention is formed by mixing the following components in weight percentage: 50% magnesium peroxide; 10% vermiculite, 5% sludge nutrient soil; 4% river sand, 10 % bamboo fiber; 6% blast furnace slag; 5% montmorillonite, 10% illite.

[0034] The slow-release oxygen material layer of the sunken green space prepared by using the above-mentioned formula has a size of 2.0cm×2.0cm×2.0cm, an average strength of 253N, and a porosity of 57.1%.

[0035] In the static test with dosage of 3mg / L, DO (dissolved oxygen) concentrations in water at 3h, 6h, and 12h were 3.64mg / L, 7.19mg / L, and 9.33mg / L, respectively, and the pHs were 6.63, 7.26, and 8.20, respectively. , the average oxygen release rate can reach 0.060mg / (d·g).

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Abstract

The invention discloses an oxygen slow releasing material layer of a downward concave grassy area. The layer is formed by mixing components including, by weight percent, 30% to 60% of an oxygen releasing material, 12% to 25% of a water retaining material, 10% to 22% of a framework material, 3% to 8% of an additive material and 10% to 20% of a bonding material. The oxygen releasing material is calcium peroxide and / or magnesium peroxide, the water retaining material is vermiculite and / or mud nutrition soil and / or acid modification attapulgite and / or super absorbent resin, the framework material is river sand and / or ceramicite and / or bamboo fibers, the additive material is blast furnace slag and / or monopotassium phosphate, and the binding material is kaolin and / or montmorillonite and / or illite and / or resin. The invention further discloses a preparing method of the oxygen slow releasing material layer of the downward concave grassy area. According to the oxygen slow releasing material layer, the dissolved oxygen content of rainwater can be improved, and the reaction power is provided for organic pollutants in degradation rainwater of the downward concave grassy area.

Description

technical field [0001] The invention relates to a slow-release oxygen material layer of a sunken green space, and also relates to a preparation method of the slow-release oxygen material layer of a sunken green space, belonging to the technical field of rainwater runoff treatment. Background technique [0002] With the continuous acceleration of the urbanization process, high-intensity urban development has resulted in an increase in the proportion of hard underlying surfaces, leading to an increase in the rainwater runoff coefficient and rainfall runoff. At the same time, due to the decline of air quality, a large number of surface pollutants enter the surface water environment directly or indirectly, which greatly aggravates the pollution of the urban water environment. [0003] The sunken green space is also called low-level green space. It is a green space system whose ground level is designed to be lower than the surrounding ground level. With the advantages of rainwat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B11/24B28C1/16C01B13/02
CPCB28B11/247B28C1/16C01B13/02
Inventor 薛朝霞操家顺赵昌爽冯骞忻亥笑阮仁俊周扬屏姚永连吴园园商凯航
Owner 荥阳市清源水务有限公司
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