Nowadays, more and more businessmen begin to publicize the reverse osmosis water purifier, which can filter out the bacteria and viruses in the water that we can not see with our naked eyes. When it comes to reverse osmosis water purifier, we have to mention RO membrane, RO membrane is the soul of the reverse osmosis water purifier, but also the core components of the water purifier, mainly to play a role in filtration. RO membrane what is the meaning of the role of reverse osmosis membrane RO membrane RO membrane reverse osmosis water purifier principle is what? The following is to come together to understand in detail.
What is the RO membrane?
RO is the abbreviation for Reverse Osmosis, which means reverse osmosis in Chinese. Reverse osmosis membrane is a new membrane separation technology developed in the 60s, is to rely on reverse osmosis membrane under pressure to make the solvent in solution and solute separation process.
RO (Reverse Osmosis) reverse osmosis technology is the use of osmosis pressure difference as the driving force of the membrane separation and filtration technology, originated in the United States in the 1960s aerospace science and technology research, and then gradually transformed into civilian use, has been widely used in scientific research, pharmaceuticals, food, beverages, seawater desalination and other fields.
RO membrane reverse osmosis principle
Mainly the use of pressure as the driving force of the membrane separation and filtration technology. RO reverse osmosis membrane pore size is as small as the nanometer scale (1 nm = 10-9 meters), is one millionth of a hairline (0.0001 micron), the naked eye can not be seen, bacteria, viruses are 5,000 times as large as it. Under a certain pressure, H2O molecules can pass through the RO membrane, while inorganic salts, heavy metal ions, organics, colloids, bacteria, viruses and other impurities in the source water can not pass through the RO membrane, thus making a strict distinction between the pure water that can be passed through and the concentrated water that can not be passed through, thus achieving the purpose of water purification.
The Frizzlife 500 GPD Tankless Reverse Osmosis Water System has excellent filtration performance.
The Frizzlife PX500-A Tankless Reverse Osmosis Water Filtration System features a 0.0001 micron RO membrane (ASR313-500G) that eliminates more than 1,000 contaminants (99.99%) from water, including fluoride, chlorine, chloramines, TDS, scale, and lead and other heavy metals. A pre-filter (ASR311) greatly extends the life of the RO membrane, while a post-alkaline filter (ASR313-A) remineralizes purified water.
What is the function of RO reverse osmosis membranes?
RO membrane, also known as RO reverse osmosis membrane, mainly play a filtering role, the civilian side is most used in water purifiers, as one of the water purifier filtration device, in the tap water to water filtration played the most central role. RO membrane can effectively remove calcium, magnesium, bacteria, organic matter, inorganic substances, metal ions and radioactive substances in the water, through the device to purify the water crystal clear, sweet and mellow. The device is suitable for families and hotels, hotels, hospitals and other enterprises and institutions for drinking water purification.
RO membrane 75G, 50G, 100G what is the difference?
G is the meaning of gallon, gallon is a volume unit. 1G is equal to 3.785L, 50G is the water purifier 24-hour water production of 50G, about 180L; 75G is the water purifier 24-hour water production of 75G, about 280L; 100g is the water purifier 24-hour water production of 100G, about 450L.
How to clean RO membrane?
Reverse osmosis membrane cleaning method can be divided into two kinds of physical cleaning, the other is chemical cleaning. General physical cleaning methods can be used. If it is not very serious generally do not recommend the choice of chemical cleaning, because the higher the frequency of chemical cleaning, the greater the damage to the reverse osmosis membrane element, seriously affecting the service life of the membrane system.
1, acid and alkali liquid
Nitric acid, phosphoric acid, oxalic acid, wringing acid and hydrofluoric acid, as well as NaOH, KOH and other alkalis can be used for membrane module cleaning.
2、Surfactant
Can improve the wetting of the cleaning agent, enhance the washability, increase the contact between the chemical cleaning agent and dirt, so that the amount of rinse water and tons of washing time to a minimum; such as SDS, Tween 80, Triton, X-100 (a nonionic surfactant) and so on.
3、Oxidizing agent
When NaOH or surfactant does not work, can be cleaned with chlorine, the amount of 200-400mg / L active chlorine, its optimal pH value of 10-110 oxidizing agent is commonly used in the membrane can be antioxidant.
4、Enzyme
Membrane made of acetate and other materials, because it can not withstand high temperatures and extreme pH, in the membrane flux is difficult to restore, need to be able to hydrolyze proteins containing enzyme cleaning agent cleaning.
How often is the RO membrane replaced?
Normal service life is about 3-5 years, reverse osmosis RO membrane is generally made of polymer materials. Such as cellulose acetate membrane, aromatic polyhydrazide membrane, aromatic polyamide membrane. Therefore a satisfactory reverse osmosis membrane should have an appropriate permeate volume or desalination rate. The membrane pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. from the water. The system has the advantages of good water quality, low energy consumption, no pollution, simple process and easy operation.
RO membrane reverse osmosis cartridge how much time to replace?
Regular replacement of the pre-filter element can play a role in protecting the service life of the RO membrane, because the pre-filter element is not changed for a long time, one is to reach the RO of the water flow will be less, and secondly, the water quality will be the more dirty, RO’s working pressure to be big, the water quality will be reduced. It is recommended to regularly update the pre-filter of the water purifier, 3-4 months to replace the reverse osmosis filter can protect the RO membrane.