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A kind of multifunctional composite filler and preparation method thereof

A composite filler, zeolite technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc. Dispersion and detachment, solving easy blockage and poor adsorption effect

Active Publication Date: 2021-09-17
ZHENGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the iron-carbon fillers used for water purification in the prior art can remove pollutants to a certain extent, there are certain defects: (1) mainly sintering, high energy consumption and atmospheric pollution during the firing process Pollution; (2) Traditional micro-electrolytic fillers often separate iron and carbon, which is difficult to recycle and difficult to add. There are also problems such as easy sinking, difficult to fix, and small contact surface with sewage; (3) Use small particle size adsorbents as fillers When the particle size of the material is too small, the pressure drop of the system will be too large, and the material will be easily lost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the multifunctional composite filler of the present embodiment is as follows:

[0036] (1) Rinse the zeolite with a particle size of 2-3cm with clean water, put it in a container, and air-dry it at room temperature for use;

[0037] (2) Weigh 2.5g of sodium alginate and dissolve it in 100mL of distilled water, heat it in a constant temperature water bath at a constant temperature of 85°C, and stir until the sodium alginate is completely dissolved to prepare an aqueous solution of sodium alginate; after cooling for 4-5 hours, Add 4g of iron powder and 4g of activated carbon to the sodium alginate aqueous solution, stir well to form a sodium alginate solution, and set aside;

[0038] (3) Weigh 4g of calcium chloride and dissolve it in 100mL of distilled water to prepare 3.85% calcium chloride aqueous solution;

[0039] (4) Add zeolite to the sodium alginate solution obtained in step (2), mix well, take out the zeolite and put it into the calcium...

Embodiment 2

[0043] The preparation method of the multifunctional composite material of the present embodiment is as follows:

[0044] (1) Rinse the zeolite with a particle size of 1.5-2.5cm with clean water, put it in a container, and air-dry it at room temperature for later use;

[0045] (2) Measure 10mL of water-based polyurethane into a 100mL beaker, add 1g of hydroxyethyl cellulose, and stir until the hydroxyethyl cellulose is completely dissolved in the water-based polyurethane;

[0046] (3) Weigh 0.15g of iron powder and 0.15g of activated carbon and mix them evenly before use;

[0047](4) Add zeolite to the mixture of water-based polyurethane and hydroxyethyl cellulose obtained in step (2), and mix thoroughly; take out the crushed stone or zeolite and put it into the mixture of iron powder and activated carbon, stir well, and mix it at 25 Cure for 24 hours at ℃ to obtain the multifunctional composite filler.

[0048] The process of treating sewage with the multifunctional composi...

Embodiment 3

[0051] The preparation method of the multifunctional composite material of the present embodiment is as follows:

[0052] (1) Rinse the gravel with a particle size of 1-3cm with clean water, put it in a container, and dry it at room temperature for later use;

[0053] (2) Weigh 10g of fly ash Portland cement in an evaporating dish, add 0.1g of mortar, 4g of iron powder, and 4g of activated carbon and stir thoroughly, add 5mL of water, and stir to form a mixture;

[0054] (3) Add crushed stones to the mixture in step (2), mix well and let it dry naturally, then spray water to keep the surface of the crushed stones or zeolite in a wet state, and cure at 30°C for 20 days to get the desired amount Functional composite filler.

[0055] The process of treating sewage with the multifunctional composite filler prepared in this example is the same as that in Example 1.

[0056] The adsorption capacity of the multifunctional composite filler phosphorus prepared in this example is 3.13...

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Abstract

The invention discloses a multifunctional composite filler and a preparation method thereof. The composite filler uses crushed stone or zeolite as aggregate, and iron powder and activated carbon are loaded on the surface of the aggregate. The composite filler of the present invention is a novel non-burning multifunctional composite filler. The composite filler is prepared by loading iron powder and activated carbon on the surface of crushed stone or zeolite by binder and thickener, or binder and crosslinking agent. The multifunctional composite filler of the present invention solves the problem of agglomeration of iron powder in existing fillers, improves the dispersion and detachment of iron powder in groundwater, enhances the fluidity of groundwater in porous media, and solves the problem of easy blockage of PRB.

Description

technical field [0001] The invention relates to the technical field of repairing water body pollution, adsorption treatment, etc., belongs to the field of environmental science and technology, and specifically relates to a multifunctional composite filler for water body pollution and a preparation method thereof. Background technique [0002] Water is the source of life and plays a pivotal role in the development of human society. With the acceleration of urbanization and the continuous development of the national economy, a large amount of industrial waste water and urban sewage are increasingly flooded, water resources are seriously polluted, and people's healthy lives cannot be guaranteed. The water shortage caused by water pollution intensifies the exploitation of groundwater, which makes the area of ​​the groundwater funnel continue to expand and the water level drops sharply, which causes surface sewage to continuously pour back into the groundwater, forming a vicious ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/461C02F101/10C02F101/20C02F103/06
CPCC02F1/281C02F1/283C02F1/46104C02F2101/105C02F2101/20C02F2103/06
Inventor 高镜清赵杰张敬申李强陈勇尚娜
Owner ZHENGZHOU UNIV