Ultrapure water, commonly known as UP water, is a high-purity water with a resistivity of up to 18 m*cm (25).
Ultrapure water is very pure and contains almost no impurities other than water molecules (H2O). This means that the water is free of bacteria, viruses, organic matter such as chlorine dioxins, and does not contain minerals and trace elements that the body needs. In fact, ultrapure water removes as many atoms as possible except hydrogen and oxygen.
In today's rapid development of science and technology, pure water is not only the standard for daily drinking, but also an indispensable and important resource for many high-tech industries. Ultrapure water equipment, a term that sounds mysterious, actually plays an important role in our lives. It is not only related to the development of semiconductor, pharmaceutical, laboratory and other industries, but also the guardian of product quality in these industries.
So, how is ultrapure water produced?This is due to a number of core technologies in ultrapure water equipment. First of all, the water source is pre-treated to remove large particles such as suspended solids, microorganisms, and organic matter. Then, reverse osmosis (RO) technology is used to further remove small impurities such as ions, viruses, and bacteria from the water. Reverse osmosis membranes have pore sizes as small as nanometers and are effective in intercepting most contaminants.
But reverse osmosis alone is not enough, there are more delicate treatment steps in ultrapure water plants. Electrodeionization (EDI) technology is a key part of this, which continuously removes ions from water through the combined action of ion exchange resins and electric fields, so that the water quality can reach high purity. In addition, in order to remove TOC (total organic carbon) and microorganisms, ultraviolet (UV) lamps and ozone generators are used for oxidative decomposition.
Finally, in order to ensure the stability of water quality and meet the special requirements of different uses, the ultrapure water equipment will also be equipped with precision filters, degassing towers and other post-treatment devices to ensure that the water quality meets strict standards.
In practice, the selection and configuration of ultrapure water equipment needs to be customized according to the specific needs of users. For example, semiconductor manufacturing plants have extremely demanding water quality requirements, and any trace amount of impurities can affect the performance of the chip;Pharmaceutical factories, on the other hand, need to strictly control the bacterial and endotoxin levels in the water to ensure the safety of the drug.