What is the difference between RO film 50G and 75G

1. The specifications are different.

The external dimensions of the membrane are different, and the size of the membrane shell used is different, and it cannot be replaced by universal use.

2. The water production capacity is different.

For example, 50g and 75g can be used when their models are the same, but the 50g membrane produces only 50g (gallons) of water in 24 hours, while the 75g membrane can reach 75g (jl gallons), and the water yield increases by 50%.

g is the meaning of gallons, 1g is about equal, 50g means that the water production of the water purifier in 24 hours is 50g, about 180L, and 75g refers to the water production of the water purifier in 24 hours is 75g, which is about 280L.

The amount of water permeable to the diaphragm is different, and the water yield is also different.

The difference between RO film 75g and 100g is the difference in water production.

50g means 50 gallons of sail buried, 75g means 75 plus extra hand, and 100g means 100 gallons. One gallon is equal to a liter, which is an American unit, which generally indicates the amount of water produced by the water purifier in a day, such as the water production of a 50-gallon Sehan film in a day is about 189 liters.

The necessity of a large flow water purifier:

For households, the bigger the water flow, the better.

Generally, a family of five, equipped with a pressure barrel of 75g per 100g reverse osmosis water purifier is the most cost-effective choice, daily water is more than enough, really needed, 400g, 500g is also enough.

The reverse osmosis water purifier with a larger flow rate is more suitable for commercial use, such as milk tea shops, coffee shops or corporate drinking water, etc. For families, high-flow water purifiers are not only a problem of overperformance, but also the cost of RO membrane replacement in the later stage is also higher.

Generally, a RO film ranges from 200 to 300 yuan for 75g, while 900 to 1000 yuan for 1000g, or even higher. For families, the cost of use has undoubtedly increased a lot. <>

The difference between RO film 50G and 75G is that the surface density of the diaphragm used in RO film 50G and 75G is different, before laser perforation, the film surface density of 50G is called RO film 50G, and the film surface density of 75G is called RO film 75G.

RO membrane is a widely used filter membrane in water treatment, and its main role is used in seawater desalination, pure water treatment, drinking water treatment, and industrial sewage treatment. The difference between 50g and 75g of RO membrane also has a great impact on the filtration effect of water treatment.

The difference between RO film 50g and 75g is that the surface density of the film is different. Before the RO film 50g, the RO film with a surface density of 34g was often used, and the RO film was susceptible to physical damage or chemical corrosion from the outside world because the surface density was too small, which would affect its service life and improve the engineering cost of water. With the progress of technology and the advancement of research and development, the RO membrane with a surface density of 50g is produced, which is much higher than the surface density of the RO membrane of 34G, so it is more stable and reliable, and the service life is longer, and at the same time, the pore size of the filter screen of the RO membrane 50g is smaller than that of the RO membrane 34g, which can better realize the removal of microscopic physical and chemical pollutants.

The surface density of RO film 75G is higher than that of RO film 50G, which can better resist chemical corrosion and physical damage, and improve the service life of RO film. In addition, the increase in surface density also means that the thickness of one of the molecular layers of the RO membrane will be more uniform, and the filtration effect of the RO membrane on water quality will be more significant. In terms of drinking water treatment, RO membrane 75G can remove microorganisms, heavy metals and chemical contaminants from water more efficiently.

In general, the difference between RO membrane 50G and 75G lies in the surface density, so the filtration effect in water treatment is also different, and users can choose RO membranes with different surface densities to meet their needs according to their own needs. <>

1. Select the model of the membrane according to the inlet water quality of the membrane

1. Water inlet TDS 1000ppm can choose ultra-low pressure membrane element water inlet;

PPM TDS 1000ppm can be selected with anti-fouling membrane element water inlet;

3. TDS 3000ppm can choose brackish water desalination membrane element;

4. Seawater desalination membrane element can be selected for inlet TDS 5000ppm.

2. Select the membrane element according to the water yield (consider whether to choose a large membrane or a small membrane):

1. 4040 membrane element is mostly used for reverse osmosis equipment with a water yield of 4t h; For reverse osmosis equipment per ton hour, choose 1 membrane for 4040, 2 membranes per ton hour, 4 reverse osmosis per ton hour, and so on.

2. 8040 membrane element is mostly used for reverse osmosis equipment with a water yield of 4t h. The 8040 membrane element is about 1 ton per hour, and 4 8040 membrane elements are selected for the 4 ton hour reverse osmosis equipment.

The difference between RO membrane modules is:

1. The current membrane manufacturers are generally Dow, Hydeneng, GE, Toray, Korea, and Wharton.

2. The current industrial reverse osmosis membrane is generally divided into two kinds according to the different diameters, one is 4 inches in diameter, the other is 8 inches, and the length is 40 inches, that is, 4040, the membrane module is generally in the water, and the 8040 is generally in the water.

3. The difference between operating pressure: the general membrane module is divided into low-pressure and ultra-low-pressure membrane.

The common domestic brands are: Dow, Hydeneng, GE, Shihan, Dongli, domestic brands: Huitong Yuanquan (now renamed Times Wharton), Big Dipper, Shanghai Garnet, Wellington.

GE's anti-fouling reverse osmosis membrane SC8040F1012 is the core component of reverse osmosis, which is an artificial semipermeable membrane with certain characteristics made of simulated biological semi-permeable membranes. It is generally made of polymer materials. Such as cellulose acetate film, aromatic polyhydrazide film, aromatic polyamide film.

The diameter of the micropores on the surface of GE's anti-fouling reverse osmosis membrane SC8040F1012 is generally between the diameters, and the size of the permeability is related to the chemical structure of the membrane itself. Some polymer materials have good repulsion to salt, but the permeability of water is not good. Some polymer materials have more hydrophilic groups in their chemical structures, so the permeability of water is relatively fast.

Therefore, a satisfactory reverse osmosis membrane should have an appropriate permeability or desalination rate.

Wright. Ryder osmosis is a physical phenomenon. When two kinds of water containing different salts, such as separated by a semi-permeable membrane, it will be found that the water on the side with less salt content will seep through the membrane into the water with high salt content, and the salt content will not permeate, so that the salt concentration on both sides will gradually merge until it is equal, this process is called osmosis.

However, it takes a long time to complete the process. However, if a pressure is applied on the side of the water with a high salt content, the result can also stop the above-mentioned osmosis, and the pressure at this time is called osmotic pressure. If the pressure is increased further, it can penetrate in the opposite direction, and the salt remains.

Therefore, the principle of reverse osmosis desalination is to apply a greater pressure than the natural osmotic pressure in the saline water (such as raw water), so that the osmosis is carried out in the opposite direction, and the water molecules in the raw water are pressed to the other side of the membrane to become clean water, so as to achieve the purpose of removing impurities and salts in the water.

1. Select the model of the membrane according to the inlet water quality of the membrane

1. Water inlet TDS 1000ppm can choose ultra-low pressure membrane element water inlet;

PPM TDS 1000ppm can be selected with anti-fouling membrane element water inlet;

3. TDS 3000ppm can choose brackish water desalination membrane element;

4. Seawater desalination membrane element can be selected for inlet TDS 5000ppm.

2. Select the membrane element according to the water yield (consider whether to choose a large membrane or a small membrane):

1. 4040 membrane element is mostly used for reverse osmosis equipment with a water yield of 4t h; For reverse osmosis equipment per ton hour, choose 1 membrane for 4040, 2 membranes per ton hour, 4 reverse osmosis per ton hour, and so on.

2. 8040 membrane elements are mostly used for reverse osmosis equipment with a water yield of 4t h. The 8040 membrane element is about 1 ton per hour, and 4 8040 membrane elements are selected for the 4 ton hour reverse osmosis equipment.

Yes, but there will be no change in the amount of water produced. It is best to use a membrane that matches the machine.

1. Under normal circumstances, the water machine and the membrane should be matched, because the membrane and the pump do not match. Under the standard working conditions of RO membrane, the total water intake required by the two membranes is different, although Zheng Zheng can produce water the same, but with a 50g pump with 75g, it will lead to a decrease in water production, and it will not be able to reach the daily output of 75g.

G membrane is a daily pure water output of 75g under the condition of 60psi inlet water pressure, with a smaller 50g pump to hit 75g membrane, not only leads to a decrease in water production, and at this time the desalination rate of the produced pure water will decrease, reduce the effluent quality, and will cause RO membrane damage and other problems due to the high negative pressure of the RO membrane, so 50g membrane should use 50g sock pump, 75g membrane should be equipped with 75g, 80g pump, this is the most scientific and reasonable approach.