Comparison between reverse osmosis membrane and ultrafiltration membrane

October 19, 2020

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The pore size of the reverse osmosis membrane is only 1 / 100 of that of the ultrafiltration membrane. Therefore, the reverse osmosis water purifier can remove the chemical pollutants such as heavy metals, pesticides and chloroform in the water, while the ultrafiltration water purifier is powerless in this regard; the particle pollutants and bacteria that can be removed by the ultrafiltration water purifier can be completely removed by reverse osmosis.

Ultra pure water equipment

1. The core components of reverse osmosis and ultrafiltration are membrane components. There are three main differences

(1) The pore size of the reverse osmosis membrane is only 1 / 100 of that of the ultrafiltration membrane. Therefore, the reverse osmosis water purifier can remove the chemical pollutants such as heavy metals, pesticides and chloroform in the water, while the ultrafiltration water purifier is powerless in this regard; the particle pollutants and bacteria that can be removed by the ultrafiltration water purifier can be completely removed by reverse osmosis.

(2) The effluent quality is different from the inspection standards of the health department. For example, the effluent bacterial indicators are as follows: the ultrafiltration water purifier adopts the "general water quality processor", and the total number of colonies is 100 / ml; while the reverse osmosis water purifier is 20 / ml, which is much more strict. Of course, the effluent quality of the reverse osmosis water purifier is much better than that of the ultrafiltration water purifier.

(3) Reverse osmosis water purifier supplies water by quality, pure water for drinking and concentrated water for washing; while ultrafiltration water purifier is generally used as washing water; when tap water quality is good, it can also be used as drinking water ultra pure water equipment.

2. The advantages of reverse osmosis water purifier are: the water quality is safe, it can remove all kinds of harmful impurities in water; it has a good effect on water supply incidents; it has a good taste of water; it can reduce the hardness of water, and the boiling water container does not scale;

Its disadvantages are: using pump, power consumption, electrical safety problems; more joints, high water pressure, relatively high failure rate and leakage probability; complex structure and high price.

3. The advantages of ultrafiltration water purifier are: no pump, no power consumption, no electrical safety problems; few joints, low water pressure, relatively low failure rate and leakage probability; simple structure and low price; low cost and high cost;

Its disadvantages are: the effect of removing chemical pollutants in water is poor; the effect on water supply incidents is poor; the taste of water is slightly poor; the hardness of water can not be reduced, such as high hardness of tap water, the boiling water container may be scaling.

4. If the tap water quality of your home tap water has reached the GB5749-2006 drinking water hygiene standard, all 106 indicators are qualified, and the tap water can be drunk without installing a water purifier; of course, if you want to further improve the taste and quality of water, you can also install water purifier to improve the quality of life.

Ultrafiltration membrane can remove macromolecules, colloids, proteins, particles and so on. It has the characteristics of low pressure, large water production and easy operation. Through testing the treatment effect of hollow fiber ultrafiltration membrane device in deep purification of liquor making raw water, it is proved that the ultrafiltration membrane water purification device can effectively eliminate the secondary pollution of water in the pipe network, and further improve the water quality.

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Author:

Mr. Zheng

이메일:

zheng@rmiplast.com

Phone/WhatsApp:

+86 15888074637