Selenium-rich nano-silver active carbon filter element and preparation method thereof

A nano-silver activated carbon and filter element technology, which is applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve problems such as increasing calcium loss, and achieve the effects of ensuring health and safety and preventing selenium deficiency

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And drinking pure water for a long time will increase the loss of calcium

Method used

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  • Selenium-rich nano-silver active carbon filter element and preparation method thereof
  • Selenium-rich nano-silver active carbon filter element and preparation method thereof
  • Selenium-rich nano-silver active carbon filter element and preparation method thereof

Examples

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Effect test

Embodiment 1

[0040] Such as figure 1 , figure 2 As shown, the selenium-enriched nano-silver activated carbon filter element of the present invention is composed of an outer envelope material 1, a nano-silver activated carbon filter layer 2, a selenium-enriched particle layer 3 and a water passage cavity 4 in the center of the filter element.

[0041] according to image 3 Shown flow chart, according to following weight percentage proportioning:

[0042] 20-50nm nano-silver 0.15-3%

[0043] Hot melt powder 6~8%

[0044] Coconut Shell Activated Carbon Balance

[0045] The coconut shell activated carbon is pickled with dilute hydrochloric acid in a reaction kettle, and after centrifugation and dehydration, it is baked in a vacuum container to constant weight, cooled to room temperature, implanted with 20-50nm nano-silver, and the iodine value of the product is detected > 1000mg / g, sterilization rate ≥ 95%, far-infrared normal total emission rate ≥ 0.8, negative ion concentration ≥ 6000 / c...

Embodiment 2

[0050] Mix 60 grams of methacrylic acid copolymer powder, 18 grams of chitosan selenite and 42 grams of calcium selenite, press to form porous skeleton particles, and then make tubular selenium-enriched granular layer endoderm.

[0051] Prepare nano-silver activated carbon and hot-melt powder mixture according to the following weight percentage ratio:

[0052] 20~50nm nano silver 3%

[0053] Polyethylene hot melt powder 8%

[0054] Coconut Shell Activated Carbon Balance

[0055] The preparation method of the selenium-enriched nano-silver activated carbon filter element is the same as that in Example 1, except that after extrusion molding, it is set at a high temperature of 130° C. for 0.5 minutes.

Embodiment 3

[0057] Prepare nano-silver activated carbon and hot-melt powder mixture according to the following weight percentage ratio:

[0058] 20~50nm nano silver 0.2%

[0059] Polyethylene hot melt powder 7%

[0060] Coconut Shell Activated Carbon Balance

[0061] The preparation method of the selenium-enriched nano-silver activated carbon filter element is the same as that in Example 1, except that after extrusion molding, it is set at a high temperature of 120° C. for 1 minute.

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Abstract

The invention discloses a selenium-rich nano-silver active carbon filter element comprising an external envelope material, a nano-silver active carbon filter layer, a selenium-rich grain layer and a water through cavity arranged at the center of the filter element. The selenium-rich nano-silver active carbon filter element is characterized in that the selenium-rich grain layer consists of slow-release material chitosan powder, selenite and calcium selenite, which follow a weight ratio of 10:3:7. The nano-silver active carbon filter layer consists of 0.15-3% by weight of 20-50-nanometer nano-silver, 6-8% by weight of hot-melted powder and the balance of coco shell active carbon. The selenium-rich nano-silver active carbon filter element not only can filter off harmful bacteria in water butalso can effectively filter off organic pollutants, sterilization byproducts and heavy metal in the water, thereby ensuring the sanitation and safety of the drinking water. In addition, long-term useof the water filtered by the filter element can also help prevent selenium shortage. The invention also provides a method for preparing the selenium-rich nano-silver active carbon filter element.

Description

technical field [0001] The invention belongs to the technical field of drinking water filtration, and in particular relates to a selenium-enriched nano-silver activated carbon filter element and a preparation method thereof. Background technique [0002] The quality of drinking water is closely related to human health. With the development of social economy, scientific progress and the improvement of people's living standards, people's requirements for the quality of drinking water are constantly improving, not only requiring it to be clean and safe, but also must be healthy and good water. Clean, safe and healthy water is the cheapest and most effective health product. [0003] With the increasing pollution of water sources and the increase of organic pollution and carcinogens caused by chlorine disinfection in tap water, many families now choose to use water purifiers, but the purified water is pure water. Long-term drinking of pure water will lead to malnutrition in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20
Inventor 金碧娥
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