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Renewable adsorption material for deep phosphorus removal of water, preparation method and application of renewable adsorption material

An adsorption material and deep technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve the problems of affecting the service life, easy consumption, poor acid and alkali corrosion resistance, etc., and prolong the service life. , long service life and excellent adsorption performance

Active Publication Date: 2017-08-18
芜湖格丰环保科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its acid and alkali corrosion resistance is poor, and it is easy to consume during use, which affects the service life, thus limiting the application to a certain extent.

Method used

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  • Renewable adsorption material for deep phosphorus removal of water, preparation method and application of renewable adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for preparing a renewable adsorption material for deep phosphorus removal in water bodies, comprising the following steps:

[0041] (1) Activated alumina balls were calcined at 300°C for 3 hours, and placed in a desiccator for later use.

[0042] (2) Take by weight 2 parts of urea, 5 parts of ferric nitrate nonahydrate and 1 part of cerium nitrate hexahydrate, and dissolve in 60 parts of water to obtain a mixed solution of urea, ferric nitrate and cerium nitrate;

[0043] (3) Take 100 parts by weight of activated alumina balls after roasting pretreatment, put them into a V-shaped mixer, add 68 parts of the mixed solution prepared in step (2), and mix for 1 hour at a rotating speed of 5 rpm;

[0044] (4) The material treated in step (3) was dried in an oven at 105° C. for 6 hours; modified activated alumina balls were obtained;

[0045] (5) Mix and stir 5 parts of sucrose, 0.2 parts of polyvinylpyrrolidone and 20 parts of dilute nitric acid solution for 0.5 hou...

Embodiment 2

[0050] A method for preparing a renewable adsorption material for deep phosphorus removal in water bodies comprises the following steps:

[0051] (1) Activated alumina balls were calcined at 400°C for 2 hours, and placed in a desiccator for later use.

[0052] (2) Take by weight 4 parts of urea, 10 parts of ferric acetate tetrahydrate and 2 parts of cerium acetate pentahydrate, and be dissolved in 180 parts of water to obtain a mixed solution of urea, ferric acetate and cerium acetate;

[0053] (3) Take 100 parts by weight of activated alumina balls after roasting pretreatment, put them into a V-shaped mixer, add 66 parts of the mixed solution prepared in step (2), and mix for 0.5 h at a rotating speed of 10 rpm;

[0054] (4) The material treated in step (3) is dried in an oven at 120° C. for 5 hours;

[0055] (5) Place the activated alumina balls dried in step (4) into 65 parts of the solution prepared in step (2); mix at a speed of 10 rpm for 0.5 h; then dry in an oven at 1...

Embodiment 3

[0060] A method for preparing a renewable adsorption material for deep phosphorus removal in water bodies comprises the following steps:

[0061] (1) Activated alumina balls were roasted at 400°C for 2 hours, and placed in a desiccator for subsequent use;

[0062] (2) Take by weight 6 parts of urea, 15 parts of ferric acetate tetrahydrate and 3 parts of cerium acetate pentahydrate, and be dissolved in 130 parts of water to obtain a mixed solution of urea, ferric acetate and cerium acetate;

[0063] (3) Take by weight 100 parts of activated alumina balls after roasting pretreatment, put them into a V-shaped mixer, add 77 parts of the mixed solution in (2), and mix for 0.5 h at a rotating speed of 10 rpm;

[0064] (4) The material treated in step (3) is dried in an oven at 120° C. for 5 hours;

[0065] (5) Put the dried activated alumina balls in step (4) into the mixed solution prepared in the remaining step (2), mix at a speed of 10 rpm for 0.5h; then dry in an oven at 120°C ...

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Abstract

The invention provides a renewable adsorption material for deep phosphorus removal of water, a preparation method and application of the renewable adsorption material. A carbonization step is added in the preparation process of the material; after calcination and carbonization are carried out with the surface of the material wrapped with a carbon source material, on one hand, the roughness of the surface can be improved to increase the specific area, and on the other hand, the acid and alkali resistance of the material can be improved to some extent to prolong the service life of the material, which is beneficial to multiple times of regeneration and use. The prepared phosphorus adsorption material is excellent in adsorption property and especially suitable for deep treatment of wastewater with a low total phosphorus concentration. Compared with the prior art, the prepared material is high in phosphorus removal efficiency and long in service life, the regeneration method of the material is simple, the regeneration effect is excellent, and the regeneration rate is still kept at 70% or above after 20 times of regeneration of the material.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a renewable adsorption material for deep phosphorus removal in water bodies, a preparation method and an application thereof. Background technique [0002] The eutrophication of water body caused by excessive phosphorus content has become a common environmental problem faced by the whole world. At present, the commonly used phosphorus removal methods at home and abroad include chemical precipitation method, ion exchange method, biological method, adsorption method and so on. [0003] The chemical precipitation method is currently the most widely used method because of its high phosphorus removal efficiency, simple operation, and low requirements for operators. However, at the same time, it produces a large amount of mud, which is likely to cause secondary pollution and is difficult to handle. Although the ion exchange method has a high removal rate, the ion e...

Claims

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Application Information

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IPC IPC(8): B01J20/02B01J20/08B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/0207B01J20/0229B01J20/08B01J20/28061B01J20/28064C02F1/281C02F2101/105
Inventor 侍孟璐章文贵吴黄河向耿辉奉向东
Owner 芜湖格丰环保科技研究院有限公司
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