The mechanical filter mainly uses quartz sand as the basic filter material, aiming at removing impurities with larger particle size such as sediment, manganese and rust in water. Generally, activated carbon is used as a filter to reduce the hardness of water and remove chlorine content and other substances that may be harmful to human body.

Colloids, particles and substances with relatively large molecular weight in water are trapped under the pressure of external driving force, while water and small solute particles pass through the membrane separation process.

Extended data:

Mineral water should generally be unheated or slightly heated cold drinks, and it is best not to boil.

Mineral water generally contains more calcium and magnesium and has a certain hardness. When boiling, calcium and magnesium are easy to precipitate, which is what we often call scale, which not only loses calcium and magnesium, but also causes sensory discomfort, so the best way to drink mineral water is to drink it directly at room temperature.

Reasonable drinking of mineral water is very particular. Pregnant women should drink more mineral water, in which trace elements contribute to the development of the fetus and the health of the mother, and it is advisable to drink 2 liters a day; Drinking baby milk with mineral water can not only enhance appetite and nutrition, but also be safe and hygienic.