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Preparation method of composite adsorbing material and application thereof

A technology of composite adsorption material and sepiolite, which is applied in the field of preparation of composite adsorption materials, can solve the problems of high removal rate of a single index, no high removal rate, and low removal rate, so as to speed up internal diffusion and improve sewage water quality , cost reduction effect

Inactive Publication Date: 2018-11-27
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing technology using sepiolite, the removal rate of a single indicator is high, but the removal rate of other indicators in the water body is not high. For example, the removal rate of COD is good, but other indicators such as nitrogen and phosphorus are not removed. rate; or have a higher removal rate of phosphorus, but lower COD, ammonia nitrogen and other issues

Method used

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  • Preparation method of composite adsorbing material and application thereof
  • Preparation method of composite adsorbing material and application thereof
  • Preparation method of composite adsorbing material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for preparing an adsorbent, comprising the steps of:

[0048] (1) Different concentrations of acid-modified sepiolite:

[0049] Put three parts of 30g of refined sepiolite passed through a 200-mesh sieve into a 1000mL beaker, add 600mL of 0.8mol / L, 1.0mol / L, 1.2mol / L HCl solutions at a solid-to-liquid ratio of 1:20, mix and place After stirring with a magnetic stirrer for 4h, let it stand for 6h. Then add deionized water, wash until the pH value of the supernatant is neutral, perform suction filtration, and dry the modified sepiolite after suction filtration at 105°C to constant weight, pass through a 200-mesh sieve, and seal and store. Promptly obtain the acid-modified sepiolite;

[0050] Take three parts of acid-modified sepiolite and one part of unmodified refined sepiolite of equal mass of 300 mg respectively and add them to the black and odorous water body to be treated (the black and odorous water body TP is 1.12mg / L, COD is 46.32mg / L, TN is 5.65mg / L, ...

Embodiment 2

[0052] A method for preparing a composite adsorbent, comprising the steps of:

[0053] (1) Different concentrations of acid-modified sepiolite:

[0054] Put three parts of 30g of refined sepiolite passed through a 200 mesh sieve into a 1000mL beaker, add 600mL of 0.8mol / L, 1.0mol / L, 1.2mol / L hydrochloric acid respectively according to the solid-to-liquid ratio of 1:20, mix and place in After stirring with a magnetic stirrer for 4 h, let it stand for 6 h. Then add deionized water, wash until the pH value of the supernatant is neutral, perform suction filtration, and dry the modified sepiolite after suction filtration at 105°C to constant weight, pass through a 200-mesh sieve, and seal and store. Promptly obtain the acid-modified sepiolite;

[0055] (2) Loading straw biochar:

[0056] Add 20g of three parts of acid-modified sepiolite with different acid concentrations and one part of refined unmodified sepiolite prepared in (1) above to 10g of crushed corn stalks with a parti...

Embodiment 3

[0059] A preparation method of sepiolite / polyaluminum-iron silicate composite adsorption material, comprising the following steps:

[0060] (1) Acid-modified sepiolite:

[0061] Put 30g of refined sepiolite passed through a 200-mesh sieve into a 1000mL beaker, add 600mL of 1.0mol / L hydrochloric acid, place it on a magnetic stirrer and stir for 4h, then let it stand for 6h. Then add deionized water, wash until the pH value of the supernatant is neutral, perform suction filtration, and dry the sepiolite after suction filtration at 105°C to constant weight, pass through a 200-mesh sieve, and seal and store to obtain Acid-modified sepiolite;

[0062] (2) Loading straw biochar:

[0063] Add 20 g of the acid-modified sepiolite prepared in (1) above to 10 g of crushed corn stalks with a particle size of less than 0.5 mm, and then slowly inject 3 mol / L of ZnCl at a solid-to-liquid ratio of 1:3 2 Activator solution, stir well and soak for 24 hours, and seal it with plastic wrap. Su...

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Abstract

The invention discloses a preparation method of a composite adsorbing material and application thereof. The preparation method comprises the following steps: performing acid modification on sepiolite,loading straw biochar, loading polysilicate aluminum and ferric, and further preparing the composite adsorbing material. Aiming at the characteristics of natural sepiolite, a polysilicate aluminum and ferric flocculating agent and maize straw biochar, the composite adsorbing material for removing and purifying pollutants in a black and odorous water body is developed, and high-efficiency treatment of various water quality indexes of the black and odorous water body is realized.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method and application of a composite adsorption material. Background technique [0002] With the gradual development of my country's industry, the waste water and waste gas discharged from some factories lead to rivers, which has led to the increasingly serious phenomenon of black and smelly river water in our country. Black and odorous water not only affects the working and living environment of surrounding residents, but also causes great harm to human health. Therefore, the research and treatment of black and odorous water body has increasingly become a focus of attention. [0003] Sepiolite is a new type of natural mineral adsorbent, generally in the form of dense clay or fiber aggregates. Sepiolite mineral has the characteristics of large specific surface area and good adsorption performance due to its unique crystal structure, and it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/12B01J20/30C02F1/28C02F1/52
CPCB01J20/12B01J20/20B01J20/3078B01J20/3085B01J2220/4825C02F1/281C02F1/283C02F1/5245C02F2209/08C02F2209/14C02F2209/16
Inventor 段文松詹佳慧郝敏聂佑恬
Owner ANHUI NORMAL UNIV
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