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Graphene water purifying filter element and water purifier

An ene water purifier and ene water purification technology, applied in the field of graphene water purification filter elements and water purifiers, can solve problems such as user inconvenience, bacteria increase, and limited adsorption capacity of activated carbon filter materials, and achieve obvious purification effect and excellent filtration effect Full, watery, sweet and savory effect

Inactive Publication Date: 2018-10-09
NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the flow of tap water is large, the adsorption capacity of the activated carbon filter material is very limited, and it cannot effectively remove residual chlorine and heavy metals in tap water.
When the adsorption capacity of the activated carbon filter material reaches saturation, the activated carbon filter element must be replaced, otherwise it will not be able to filter, and frequent replacement of the activated carbon filter element will cause inconvenience to users and increase the cost of use
At the same time, neither the PP cotton filter element nor the ordinary activated carbon filter material can inhibit the growth of bacteria. If the two-stage filter element is not replaced for a long time, it will cause secondary pollution, and the bacteria will increase geometrically.
In order to achieve the purpose of antibacterial, the existing treatment method is to soak the compressed activated carbon filter element in the mixed solution of silver nitrate and dilute nitric acid. After drying, the silver ions are physically adsorbed on the compressed activated carbon filter element, thereby realizing the sterilization and antibacterial function. Once the above-mentioned compressed activated carbon filter is installed on the water treatment channel, both silver and nitric acid will be precipitated. Silver is a heavy metal, which is harmful to the human body. Nitric acid is precipitated as nitrite, which can cause cancer if used for a long time

Method used

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  • Graphene water purifying filter element and water purifier
  • Graphene water purifying filter element and water purifier
  • Graphene water purifying filter element and water purifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] This implementation provides a kind of one-level graphene PP cotton composite filter element, such as figure 2 As shown, it is a hollow structure, and dense structure layers 31 and loose structure layers 32 are arranged alternately from the inside to the outside; the tight structure layers 31 and loose structure layers 32 are all prepared by graphene PP cotton composite materials;

[0075] The thicknesses of the compact structure layer 31 and the loose structure layer 32 are 1-3 μm and 8-10 μm respectively; the thickness of the composite filter element is 1.5 cm-2 cm.

[0076] The outer surface of the first-level graphene PP cotton composite filter core is provided with a plurality of spiral protrusions 33 in parallel, and the protrusions 33 extend along the height direction of the composite filter core;

[0077] The distance between the protruding structures 33 is 0.5-1 cm;

[0078] The inner surface and the outer surface of the first-level graphene PP cotton composi...

Embodiment 2

[0095] This embodiment provides a second-stage graphene-modified activated carbon filter element, which is prepared by using the following components in mass percentages:

[0096] Graphene 0.1%-10%;

[0097] Modified activated carbon 90-99.9%;

[0098] The preparation method of described modified activated carbon is:

[0099] After cleaning and drying the activated carbon raw material, add it to the modifier solution, stir evenly, soak for 2-3 hours, filter out the solid matter, wash and dry to obtain the modified activated carbon;

[0100] The mass ratio of the activated carbon to the modifier is 20:1-1:2; the mass fraction of the modifier in the modifier solution is 1%-30%.

[0101] The activated carbon raw material is one or more of coal-based activated carbon, coconut shell activated carbon, fruit shell activated carbon and wood activated carbon.

[0102] The modifying agent is one or more of organic silicon, methyl methacrylate, acrylate, sodium dodecylbenzenesulfonate...

Embodiment 3

[0110] The present embodiment provides a three-stage graphene modified activated carbon composite filter element, comprising the following components in mass percentages:

[0111] Graphene 0.1%-10%;

[0112] Sodium dodecylbenzene sulfonate modified activated carbon 90-99.9%.

[0113] The preparation method of described sodium dodecylbenzenesulfonate modified activated carbon is:

[0114] Add the activated carbon raw material to the sodium dodecylbenzenesulfonate solution with a concentration of 0.02-3.5mmol / L, shake at room temperature for 2-10 hours, then filter, separate and wash the activated carbon to prepare the grafted sodium sulfonate group modified activated carbon.

[0115] The activated carbon raw material used in the modified activated carbon has an iodine value of 800-1600, an ash content of <8%, and a mesh number of 600-1500.

[0116] The graphene is modified graphene oxide.

[0117] The preparation method of described three-stage graphene modified activated c...

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Abstract

The invention relates to a graphene water purifying filter element and a water purifier. The water purifying filter element comprises a first-level graphene PP cotton composite filter element, a second-level graphene modified activated carbon composite filter element, and a third-level graphene modified activated carbon composite filter element which are sequentially connected. The water purifierprepared by adopting the water purifying filter element has better effects on filtering and removing various impurities, rusts, bacteria and organic matters. The bacteria in the tap water are effectively removed without increasing content of nitrate and heavy metal ingredients in the water. The graphene water purifying filter element has the characteristics of being high in efficiency, convenientto use, and low in cost and raw material consumption. The contents of the beneficial elements in the water treated through the water purifying filter element are on the same level with the contents ofthe beneficial elements in the tap water, the PH value of the filtered water reaches 7.40 and is much closer to the optimal PH value of the drinking water of human beings, and the filtered water is more suitable for drinking directly.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a graphene water purification filter element and a water purifier. Background technique [0002] Tap water contains harmful substances such as bacteria, heavy metals, odorous gases, and pigments. According to statistics, tap water usually contains more than 2,000 compounds, of which more than 200 are harmful to humans, and bacteria are the main cause of water pollution. Studies have shown that pathogenic bacteria such as Salmonella, Staphylococcus aureus, Bacillus cereus and pathogenic Escherichia coli in drinking water will have a very serious impact on human health. The water purifier is an ideal household water purification equipment. It is used for tap water purification, so that the tap water that is polluted or does not meet the safe drinking water standard can be greatly improved after being treated by the water purifier. It can effectively remove rust, sediment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02
CPCC02F1/001C02F1/283C02F2301/08
Inventor 沙嫣沙晓林
Owner NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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