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Preparation method of pollution-resistant nanofiltration membrane for water purifier

An anti-pollution, nanofiltration membrane technology, applied in the field of nanofiltration membranes, can solve the problems of only 50-100 gallons of water production, weak anti-pollution ability, increased use costs, etc., to improve water yield and water production, operation Cost and manufacturing cost reduction, effect of reducing manufacturing cost and operating cost

Pending Publication Date: 2016-12-14
NANJING SHUIBEIZI DIFFERENT QUANTITY PIPELINE WATER SUPPLY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the function of the household reverse osmosis membrane, the existing household water purifiers generally have a water yield of about 50%, so the waste of water resources is serious, and the daily water production of each household water purifier is only 50-100 gallons
In addition, the household reverse osmosis membrane is generally a roll structure, its anti-pollution ability is not strong, and the cleaning process is complicated, so it can only be replaced regularly, which increases the cost of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of an anti-pollution nanofiltration membrane for a water purifier provided in this embodiment comprises the following steps:

[0023] Step 1: prepare the base film first, the components of the base film are calculated in parts by weight: cellulose diacetate: 80 parts, cellulose triacetate: 40 parts, graphite powder: 2 parts, nano silicon dioxide: 8 parts, Potassium permanganate: 12 parts, polyethylene glycol: 2 parts, polyurethane: 3 parts, cellulose ether: 2 parts, polysulfone: 22 parts, polyethylene: 3 parts, polypropylene: 5 parts, polyacrylonitrile: 3 copies;

[0024] The preparation method of the base film comprises the following steps: put cellulose diacetate, cellulose triacetate, graphite powder, and nano silicon dioxide into a reaction kettle and stir evenly, the stirring speed is 300r / min, the stirring temperature is 105°C, and the stirring time is 2 Hour, then put into potassium permanganate, polyethylene glycol, polyurethane, cellulose ...

Embodiment 2

[0029] A preparation method of an anti-pollution nanofiltration membrane for a water purifier provided in this embodiment comprises the following steps:

[0030] Step 1: prepare the base film first, the components of the base film are calculated in parts by weight: cellulose diacetate: 90 parts, cellulose triacetate: 50 parts, graphite powder: 4 parts, nano silicon dioxide: 12 parts, Potassium permanganate: 15 parts, polyethylene glycol: 4 parts, polyurethane: 8 parts, cellulose ether: 6 parts, polysulfone: 25 parts, polyethylene: 5 parts, polypropylene: 9 parts, polyacrylonitrile: 6 copies;

[0031] The preparation method of the base film comprises the following steps: put cellulose diacetate, cellulose triacetate, graphite powder, and nano silicon dioxide into a reaction kettle and stir evenly, the stirring speed is 400r / min, the stirring temperature is 120°C, and the stirring time is 5 Hours, then put into potassium permanganate, polyethylene glycol, polyurethane, cellulos...

Embodiment 3

[0036] A preparation method of an anti-pollution nanofiltration membrane for a water purifier provided in this embodiment comprises the following steps:

[0037] Step 1: Prepare the base film first, the components of the base film are calculated in parts by weight: cellulose diacetate: 88 parts, cellulose triacetate: 45 parts, graphite powder: 3 parts, nano silicon dioxide: 10 parts, Potassium permanganate: 13 parts, polyethylene glycol: 3 parts, polyurethane: 5 parts, cellulose ether: 4 parts, polysulfone: 23 parts, polyethylene: 4 parts, polypropylene: 7 parts, polyacrylonitrile: 5 copies;

[0038] The preparation method of the base film comprises the following steps: put cellulose diacetate, cellulose triacetate, graphite powder, and nano silicon dioxide into a reaction kettle and stir evenly, the stirring speed is 360r / min, the stirring temperature is 110°C, and the stirring time is 3 Hours, then put into potassium permanganate, polyethylene glycol, polyurethane, cellulos...

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Abstract

The invention discloses a preparation method of a pollution-resistant nanofiltration membrane for a water purifier. The method comprises the following steps: 1: preparing a membrane film; 2: preparing a casting solution; 3: drying the base membrane, and heating the surface to 30-40 DEG C, then adding the base membrane into the casting solution and impregnating for 2-4 h, conducting ultrasonic disperse in the whole process of membrane impregnation, so as to prepare the pollution-resistant nanofiltration membrane; then washing the nanofiltration membrane with deionized water and then drying.

Description

technical field [0001] The invention relates to a nanofiltration membrane, in particular to a preparation method of an anti-pollution nanofiltration membrane for a water purifier. Background technique [0002] With the serious pollution of domestic water bodies, people pay more and more attention to water quality safety. Many families have installed household water purifiers. General household water purifiers are made of PP cotton, activated carbon, ultrafiltration, reverse osmosis, and coconut shell activated carbon. and other filter materials; [0003] In the existing household water purifiers, the reverse osmosis membrane is mainly used for filtration. Due to the characteristics of the household reverse osmosis membrane, its desalination rate is very high, so the salt content of the effluent is basically zero. At the same time, the household reverse osmosis membrane needs high pressure operation , Generally, its operating pressure needs to be 0.5MP ~ 0.7MP. Due to the e...

Claims

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Application Information

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IPC IPC(8): B01D71/68B01D67/00B01D61/02C02F1/44
CPCB01D71/68B01D61/027B01D67/0002C02F1/442
Inventor 高烨董平董斌董事杨新宇张宇涵
Owner NANJING SHUIBEIZI DIFFERENT QUANTITY PIPELINE WATER SUPPLY ENG
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