Ultra-pure water can be drunk, but there is no mineral trace elements needed by the human body, that is, almost remove all atoms other than oxygen and hydrogen water, no nutritional value.
Ultra-pure water is for the development of ultra-pure materials (semiconductor materials, nano-fine ceramic materials, etc.) the application of distillation, deionization, reverse osmosis technology or other appropriate supercritical fine technology to produce water, its resistivity is greater than 18 MΩ * cm, or close to the limit value of 18.3 MΩ * cm (25 ℃). Simply put, it is water with almost all atoms other than oxygen and hydrogen removed .
This kind of water is generally difficult to reach the degree of process, the theory can be used to secondary reverse osmosis and then through the series of hybrid exchange resin columns for secondary reverse osmosis water treatment, but the regeneration of exchange resin inconvenience, quality is difficult to ensure.
Expanded Information
About Ultrapure Water
Ultra-pure water (Ultrapure water), also known as UP water, is water with a resistivity of 18 MΩ * cm (25 ℃). This water in addition to water molecules, almost no impurities, not to mention bacteria, viruses, chlorine dioxin and other organic matter, of course, no trace elements of minerals needed by the human body, that is, almost remove all atoms other than oxygen and hydrogen water. It can be used in the preparation process of ultrapure materials (semiconductor original materials, nano-fine ceramic materials, etc.) applying distillation, deionization, reverse osmosis technology or other appropriate supercritical fine technology.
In atomic spectroscopy, high-performance liquid chromatography, ultra-pure material analysis, trace substances, etc. in certain experiments, the need for ultrapure water, ultrapure water is prepared as follows:
(1) add a small amount of potassium permanganate water source, with a glass distillation device for secondary distillation, and then all-quartz distillers distillate, collected in quartz containers, can be obtained from ultrapure water.
(2) Use a mixed bed or tandem column of strong acid type cation and strong base type anion exchange resin column. Can fully remove the cation and anion in the water, its resistivity up to 10 Q-cm water, commonly known as deionized water, and then distilled with a full quartz distiller, collection can be obtained ultrapure water.
Source: Baidu Encyclopedia: ultrapure water