What is the difference between Dow RO and Sehan RO membranes?

First, the desalination rate is different

Dow. The RO desalination rate is slightly higher, the fouling resistance is slightly stronger, and the higher concentration of raw water can also be used more smoothly;

Sehan membrane has a low filtration rate of low-cost metal ions, which can ensure more beneficial minerals in water.

Second, the ** aspects are different:

Dow RO is better than Sehan's RO film.

Cheap. Third, the water yield is different:

Dow RO has mastered the core elements of reverse osmosis, so the water penetrates relatively quickly.

The chemical structure of the polymer material used in Sehan membrane has many hydrophilic groups, and it has good permeability or desalination rate, but the permeability rate of water is not good.

Fourth, the structure of the RO membrane is different:

RO membrane is divided into asymmetrical membrane and homogeneous membrane, and there is also a division of dry film and wet membrane, the dry membrane is resistant to preservation, the wet membrane is tested in water, the process of wet film is relatively low, Sehan membrane is wet film, and Dow RO's is dry membrane.

Each has its own advantages. The Dow membrane in the United States is more famous, the workmanship is very good, the diaphragm is tight, and the Dow membrane is generally used in large water plants. But the Dow membrane is prone to blockage.

And there are a lot of fake Dow membranes on the market. Sehan is also good. Korean, strong anti-pollution ability, long life, good chemical stability.

In fact, which membrane is used for household water purifiers is very good, and there is not much difference. It's just that Dow's propaganda is good.

I asked Dow's general representative, Shanghai Baozi, and they didn't explain. Directly say how many of each of the two kinds of membranes, and judge by time and usage data, the result will be more straightforward. Don't you say, it's a good way to do it.

Realistically speaking, Dow's current market share is still in front, and in the final analysis, it can be understood as a first-mover advantage. For example, Shanghai Baozi, the reason why it is the head of Dow, the key is that the time has been done for a long time, and the process is more standardized, just for your reference. After all, you have to use it a lot to find a problem.

Summary. The main differences between Dow RO membrane and GE membrane are as follows:1

The materials are different: Dow RO membranes are made of polyacrylonitrile fibers, while GE membranes are made of polyethylene. 2.

Different structures: Dow RO membrane is a multi-layer structure, each layer has a different structure, while GE membrane is a single-layer structure. 3.

Different performance: Dow RO membrane has better water permeability than GE membrane because its multi-layer structure can better inhibit water loss, while the monolayer structure of GE membrane cannot effectively inhibit water loss. 4.

Different: Dow RO film is higher than GE film because it is more complex in material and structure than GE film, and it is more expensive to produce. In addition, both Dow RO membrane and GE membrane have good corrosion resistance, which can effectively prevent harmful substances in the water from entering the water body, thereby protecting the water quality.

I'm still a little confused, can you be more detailed?

The main differences between Dow RO membrane and GE membrane are as follows:1The materials are different:

Dow RO membranes are made from polyacrylonitrile fibers, while GE membranes are made from polyethylene. 2.The structure is different:

Dow RO membrane is a multi-layer structure with a different structure for each layer, whereas GE membrane is a single-layer structure. 3.Performance is different:

The water permeability of the Dow RO membrane is better than that of the GE membrane because its multi-layer structure can better inhibit the loss of water, while the monolayer structure of the GE membrane cannot effectively inhibit the loss of water. 4.**Different:

The ** of Dow RO film is higher than that of GE film, because its material and structure are more complex than GE film, and the production cost is also higher. In addition, both Dow RO membrane and GE membrane have good corrosion resistance, which can effectively prevent harmful substances in the water from entering the water body, thereby protecting the water quality.

Summary. The main differences between Dow RO film and GE film are as follows: 1. Dow RO film is produced by Dow, and GE film is produced by GE.

2. The compressive strength of Dow RO film is higher, and the compressive strength of GE film is lower. 3. The permeability of Dow RO membrane is higher, and the permeability of GE membrane is lower. 4. The corrosion resistance of Dow RO film is stronger, and the corrosion resistance of GE film is weaker.

5. The ** of Dow RO film is higher, and the ** of GE film is lower.

The main differences between Dow RO film and GE film are as follows: 1. Dow Duanhuai RO film is produced by Dow, and GE film is produced by GE. 2. The compressive strength of Dow RO film is higher, and the compressive strength of GE film is lower.

3. The permeability of Dow RO membrane is higher, and the permeability of GE membrane is lower. 4. The corrosion resistance of Dow RO film is stronger, and the corrosion resistance of GE film is weaker. 5. The ** of Dow RO film is higher, and the ** of Ge film is lower than that of Grip Youyou.

Can you tell us more about that?

The difference between Dow RO membrane and GE membrane is that Dow RO membrane is a counter-flow membrane, which can effectively remove organic matter, heavy metal ions, viruses and bacteria in water, while GE membrane is a positive flow membrane, which can effectively remove hardness ions, viruses and bacteria in water. The cause of the problem may be due to the poor quality of the membrane, or due to improper cleaning of the membrane, resulting in the residue of harmful substances on the membrane, which affects the filtration effect of the membrane. The workaround is:

1.Choose a regular membrane to ensure the quality of the membrane; 2.Clean the membrane regularly to ensure the cleanliness of the membrane; 3.

Regularly check the filtration effect of the membrane, find the problem in time and deal with it in time. Personal Tips:1

When choosing a membrane, it is necessary to choose a regular membrane to ensure the quality of the membrane; 2.Clean the membrane regularly to ensure the cleanliness of the membrane; 3.Regularly check the filtration effect of the membrane, find problems in time and deal with them in time.