Why does the filtered water from the water purifier contain milky white bubbles?

Consumers often encounter the situation that after the water purifier is installed on the test machine, it is found that the purified filtered water has white oily bubbles. What is the reason for this?

In general, there are two possibilities for the emergence of this phenomenon:

First, the filter membrane protection fluid.

In order to ensure the water permeability, the surface of the filter element membrane must exhibit hydrophilic properties, but the general membrane matrix is ​​hydrophobic, so it is necessary to adopt a hydrophilic modifier to modify. The general hydrophilic agent (ie, the membrane protection solution) has certain amphiphilic properties, and the amphiphilic properties are conducive to the generation and stability of the foam.

Popularly speaking, the bubble will inevitably reflect the fact that there are traces or even measured hydrophilic agents in your filtrate, while the medical grade and food-grade hydrophilic agents (protective fluids) basically do not need to consider the harm to the human body. So don't worry.

Second, due to changes in water pressure.

When tap water is used to pressurize long-distance tap water through a water pipe network, the gas present in the pipe network and the gas in the atmosphere increase in water solubility under pressure, and is largely dissolved in tap water. Tap water must also be pumped to increase power when it enters the pure water equipment. The water pump pressurizes the water body, which in turn increases the pressure of the dissolved gas in the water body, making the gas molecules smaller and the solubility further increased. Because there is always pressure inside the system, gas molecules cannot be released. When this part of water flows out of the system, the pressure on the gas molecules suddenly disappears, and then it expands into bubbles that we can observe with the naked eye. When the volume is large, there will be a lot of tiny The bubbles bubbled out and the body of water appeared milky white, then gradually disappeared. This is a normal pure physical phenomenon and will not affect the drinking of pure water.

The membrane protection liquid inside the general water purifier filter element can be normally washed within a few minutes to ten minutes after installation, and there is no need to worry about the water in the water purifier is not clean because the material used in the water purifier is not the same. Physically harmful. Filtered water is purely physical filtration. Even if some anomalies occur, they are due to some physical phenomena. Does not affect the quality of water itself, so after the professional installers can be used after cleaning.

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