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Phosphorus-fixing and oxygen-releasing material, and preparation method and application thereof

A technology for releasing oxygen and calcium peroxide, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc. It can solve the problems of submerged plant growth stress, insufficient dissolved oxygen in lakes, and low transparency of lakes, etc. , to achieve the effects of improving the transparency of the lake, restoring the effect and investment, and reducing the preparation cost

Inactive Publication Date: 2020-02-21
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual ecological restoration project, the planting of submerged plants faces the problems of insufficient dissolved oxygen at the bottom of the lake, secondary release of phosphorus in the sediment, and low transparency of the lake. These unfavorable conditions pose a huge threat to the growth of submerged plants.

Method used

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  • Phosphorus-fixing and oxygen-releasing material, and preparation method and application thereof
  • Phosphorus-fixing and oxygen-releasing material, and preparation method and application thereof
  • Phosphorus-fixing and oxygen-releasing material, and preparation method and application thereof

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preparation example Construction

[0044] According to another aspect of the present invention, the present invention relates to a method for preparing a phosphorus-fixing and oxygen-releasing material, comprising the following steps:

[0045] Calcium peroxide, carrier, embedding agent and flocculant are mixed and stirred to obtain a phosphorus-fixing and oxygen-releasing material.

[0046] The preparation method of the phosphorus-fixing and oxygen-releasing material of the invention is simple and easy, and the material with excellent performance can be obtained by mixing and stirring each component.

[0047] Preferably, the stirring time is 6-24h;

[0048] In one embodiment, the stirring time is 6-24 hours, and 8 hours, 10 hours, 12 hours, 15 hours, 18 hours, 20 hours or 22 hours can also be selected.

[0049] Preferably, the stirring time is 12h.

[0050] In a preferred embodiment, the preparation method of the phosphorus-fixing and oxygen-releasing material comprises the following steps:

[0051] (a) putt...

Embodiment 1

[0060] A phosphorus-fixing and oxygen-releasing material, comprising the following components in parts by weight:

[0061] 20 parts of calcium peroxide, 10 parts of kaolin, 15 parts of medical stone, 25 parts of polyvinyl alcohol solution, 20 parts of chitosan and 10 parts of polyacrylamide;

[0062] Wherein, the mass percent of polyvinyl alcohol in the polyvinyl alcohol solution is 10%;

[0063] A preparation method for phosphorus-fixing and oxygen-releasing material, comprising the following steps:

[0064] (a) Put polyvinyl alcohol into distilled water to prepare polyvinyl alcohol solution, the temperature of distilled water is 100°C;

[0065] (b) Calcium peroxide, carrier, polyvinyl alcohol solution and flocculant were mixed and stirred for 12 hours to obtain a phosphorus-fixing and oxygen-releasing material.

Embodiment 2

[0067] A phosphorus-fixing and oxygen-releasing material, comprising the following components in parts by weight:

[0068] 30 parts of calcium peroxide, 10 parts of kaolin, 15 parts of medical stone, 25 parts of polyvinyl alcohol solution, 20 parts of chitosan and 5 parts of polyacrylamide;

[0069] A preparation method for phosphorus-fixing and oxygen-releasing material, comprising the following steps:

[0070] (a) Put polyvinyl alcohol into distilled water to prepare polyvinyl alcohol solution, the temperature of distilled water is 98°C;

[0071] (b) Calcium peroxide, carrier, polyvinyl alcohol solution and flocculant were mixed and stirred for 6 hours to obtain a phosphorus-fixing and oxygen-releasing material.

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Abstract

The invention relates to the technical field of water body remediation, in particular to a phosphorus-fixing and oxygen-releasing material, and a preparation method and application thereof. The phosphorus-fixing and oxygen-releasing material comprises the following components in parts by weight: 10 to 30 parts of calcium peroxide, 25 to 55 parts of a carrier, 25 to 40 parts of an embedding mediumand 25 to 50 parts of a flocculating agent, wherein the flocculating agent is prepared from chitosan and / or polyacrylamide. The phosphorus-fixing and oxygen-releasing material disclosed by the invention enables a lake substrate to have three effects of relatively high dissolved oxygen, inhibition of secondary release of phosphorus and improvement of lake transparency, so submerged plants are allowed to have a good growth and propagation environment.

Description

technical field [0001] The invention relates to the technical field of water restoration, in particular to a phosphorus-fixing and oxygen-releasing material, a preparation method and application thereof. Background technique [0002] At present, domestic research pays more attention to social hot issues such as lake eutrophication and black and odorous water bodies. Domestic projects generally adopt comprehensive measures of external source control, internal source reduction, ecological restoration, and clean water supply to restore lakes. Technical measures such as external source control and internal source reduction can only cut off the discharge and release of external pollutants from the source or outside, so as to ensure that the water quality of the lake will not deteriorate in a short period of time. From a long-term perspective, it is impossible to make the lake self-purifying. The ecological restoration is mainly through planting submerged plants, adding fish and ...

Claims

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Application Information

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IPC IPC(8): C02F7/00C02F3/32C02F1/56C02F1/28C02F101/10
CPCC02F1/281C02F1/288C02F1/5263C02F1/56C02F3/32C02F7/00C02F2101/105C02F2103/007Y02W10/10
Inventor 蒲帅潘彦羽龚浩吴朝阳高智荣陈涛龚燕芳
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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