Different water purification methods

After understanding their own water quality, friends can consider a water purifier suitable for their own.
Different water purification methods
Distillation: By heating water to the boiling point and then condensing and collecting water vapor, a purification method that leaves contaminants, can effectively remove bacteria, viruses, microorganisms and common chemical pollutants, including arsenic and barium , Cadmium, chromium, lead, nitrate, sodium, sulfate and many organic chemicals. However, some organic pollutants with boiling points lower than or close to water cannot be removed.
Note: Simply boiling the water can kill most bacteria and microorganisms, but it cannot remove common chemical pollutants such as lead, arsenic, nitrate, chlorine, etc., and due to the evaporation of heated water vapor, the content of the pollutants will be concentrated in a disguised form. Level.
Filtration: A purification method that adheres dissolved or suspended substances in water to the surface or voids of the absorption medium. The purification effect is related to the filter medium and water source pollutants. Generally, there are Microfiltration (microfiltration, The pore size is about 0.1 microns), Ultrafiltration (ultrafiltration, the pore size is about 0.01 microns), Nanofiltration (nanofiltration, the pore size is about 0.001 microns), the filtration effect is microfiltration

Activated Carbon: Depending on the design, the effect of the filter varies greatly. Activated carbon filters generally have a very good removal effect on pesticides and other organic poisons and chlorine. Some special designs can also remove pollutants such as lead and asbestos, but Generally, the purification effect of pollutants such as metals, nitrates and minerals is not good.

Deionization/Ion Exchange: Deionization/Ion Exchange can remove some water-soluble mineral salts and other charged molecules or ions from water, but it cannot remove microorganisms or non-ionic contaminants.

Water Softeners: Water is usually used to reduce calcium and magnesium in water by ion exchange. Some are also designed to remove iron, manganese, heavy metals and even some radioactive substances, and cannot remove microorganisms or non-ionic pollutants.
Reverse osmosis: By passing water through a semi-permeable membrane (with a pore size of about 0.0001 microns), particles larger than water molecules can be removed, which can clean most microorganisms, bacteria, viruses, and most common chemical pollution , Such as dissolved salts, lead, mercury, arsenic, asbestos, fluorine, etc., but the filtration of some pesticide organic poison residues is not good enough. In addition, reverse osmosis water purifiers usually work slower.

Ultraviolet/UV: can effectively kill microorganisms, bacteria and viruses, but this way can not remove chemical pollutants.

There is no single purification method that can remove all the pollution, so most of the water purifiers on the market also combine different methods to improve the purification effect.