Graphene-activated carbon composite filter element as well as preparation method and application thereof

A composite filter element and graphene technology, applied in the field of water filtration and purification, can solve the problems of affecting human health, the filtration effect cannot be further improved, membrane pollution, etc., and achieve excellent heavy metal removal effect, increase adhesion effect, and improve the effect of taste.

Inactive Publication Date: 2019-08-02
NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, most of the RO membrane water purifiers are used in the market. While the RO membrane isolates bacteria, there are three major defects: one is RO membrane filtration, which not only isolates most bacteria and viruses, but also isolates minerals and beneficial elements. Drinking pure water will lead to calcium, magnesium, iron, potassium and other beneficial elements, which will affect human health; second, various bacteria and viruses intercepted by the RO membrane adhere to the membrane surface and multipl

Method used

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  • Graphene-activated carbon composite filter element as well as preparation method and application thereof
  • Graphene-activated carbon composite filter element as well as preparation method and application thereof
  • Graphene-activated carbon composite filter element as well as preparation method and application thereof

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Embodiment 1

[0056] The present embodiment provides a kind of preparation method of graphene-activated carbon composite filter core, comprises the steps:

[0057] Step 1. Preparation of raw materials: graphene powder is prepared by oxidation-reduction method, and the monolayer ratio of the selected graphene is 85-95%.

[0058] Step 2. Surface compounding: Mix coconut shell activated carbon powder, plastic rubber powder and graphene powder for pre-grafting, add additive 1 (mass ratio of zeolite beta to ceramic is 1:0.5), mix evenly, and then add additive 2 (the mass ratio of food-grade cationic sodium exchange resin and chelating resin is 1:1), continue to stir evenly. The mass percentage of each component is shown in Table 1.

[0059] Step 3. Extrusion molding: Pour the mixed carbon powder into the compressed activated carbon filter production equipment, after full stirring, heat up to 100-160 degrees Celsius, carry out graft modification treatment, extrude, and cut into a certain length ...

Embodiment 2

[0062] The present embodiment provides a kind of preparation method of graphene-activated carbon composite filter core, comprises the steps:

[0063] Step 1. Preparation of raw materials: graphene powder is prepared by oxidation-reduction method, and the monolayer ratio of the selected graphene is 85-95%.

[0064] Step 2. Surface compounding: Mix coconut shell activated carbon powder, plastic rubber powder and graphene powder for pre-grafting, add additive 1 (the mass ratio of beta zeolite to calcite is 1:1), mix evenly, and then add the additive 2 (the mass ratio of food-grade cationic sodium exchange resin to mixed bed polishing resin is 1:2), and continue to stir evenly to obtain a mixture. The mass percentage of each component is shown in Table 1.

[0065] Step 3. Extrusion molding: Pour the mixture into the compressed activated carbon filter element production equipment, after full stirring, heat up to 100-160 degrees Celsius, carry out graft modification treatment, extr...

Embodiment 3

[0068] The present embodiment provides a kind of preparation method of graphene-activated carbon composite filter core, comprises the steps:

[0069] Step 1. Preparation of raw materials: graphene powder is prepared by oxidation-reduction method, and the monolayer ratio of the selected graphene is 85-95%.

[0070] Step 2. Surface compounding: Mix coconut shell activated carbon powder, plastic rubber powder and graphene powder for pre-grafting, add additive 1 (the mass ratio of zeolite beta to tourmaline is 1:0.8), mix well, and then add Additive 2 (the mass ratio of food-grade cationic sodium exchange resin to strongly basic anion exchange resin is 1:3), and continue to stir evenly. The mass percentage of each component is shown in Table 1.

[0071] Step 3. Extrusion molding: Pour the mixed carbon powder into the compressed activated carbon filter production equipment, after full stirring, heat up to 100-160 degrees Celsius, carry out graft modification treatment, extrude, an...

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Abstract

The invention relates to a graphene-activated carbon composite filter element as well as a preparation method and application thereof. The composite filter element comprises the following components by mass percentage: 50-80% of activated carbon, 1-20% of graphene, 10-20% of plastic rubber powder, 1-5% of an additive 1 and 5-10% of an additive 2. According to the preparation method, graft modification is carried out by mainly adding graphene and activated carbon, so that the original micropores are more refined, the filtration effect is enhanced, and the functionality is improved. The preparation method comprises the steps of grafting and blending the activated carbon and graphene powder with other components at a certain temperature, and then carrying out carbon rod package and encapsulating by using a graphene non-woven fabric. The obtained composite filter element has a better filtering effect, and has the effects of sterilizing by overflowing, removing heavy metals, retaining beneficial elements, improving mouthfeel, avoiding waste water, reducing secondary pollution, having large flux and the like.

Description

technical field [0001] The invention relates to the technical field of water filtration and purification, in particular to a graphene-activated carbon composite filter element and its preparation method and application. Background technique [0002] In 1835, Britain manufactured the world's first diatomite ceramic water filter tank, which can filter out large suspended particles in water and reduce water turbidity. In 1862, activated carbon was used for water purification. At that time, the industrial revolution was just beginning, and water pollution was expanded from biological pollution (pathogenic bacteria) to chemical pollution and became more and more serious. Activated carbon is particularly effective for chemical pollution of water, and at the same time greatly improves the smell, taste and taste of water. In the same year, French biologist Louis Pasteur discovered the existence of bacteria and their amazing reproductive ability, as well as the harm of bacteria to hu...

Claims

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Application Information

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IPC IPC(8): B01D39/14B01D39/16B01D39/20C02F1/28C02F1/50C02F1/00B01D61/14C02F101/10C02F101/12C02F101/20C02F101/36
CPCB01D39/14B01D39/1638B01D39/2055B01D61/147B01D2239/0407B01D2239/0442C02F1/001C02F1/283C02F1/285C02F1/50C02F2101/10C02F2101/12C02F2101/20C02F2101/203C02F2101/206C02F2101/36C02F2303/04
Inventor 沙嫣沙晓林
Owner NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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