Ultra pure water equipment for ink and inkjet printing
1. Using ion exchange method, the process is as follows: raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → cation resin filter bed → anion resin filter bed → cation anion resin mixed bed → microporous filter → water point
2. Adopting a two-stage reverse osmosis method, the process is as follows: raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → first stage reverse osmosis → pH adjustment → intermediate water tank → second stage reverse osmosis (with positive charge on the surface of the reverse osmosis membrane) → purified water tank → pure water pump → microporous filter → water point
3. Using EDI method, the process is as follows: raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → first stage reverse osmosis machine → intermediate water tank → intermediate water pump → EDI system → microporous filter → water point
At present, the processes for preparing ultrapure water for the chemical industry are basically the above three types, and most of the other process flows are derived from different combinations and combinations based on the above three basic process flows. Their advantages and disadvantages are listed below:
1. The first method of using ion exchange resin has the advantages of low initial investment and less space occupation, but the disadvantage is that it requires frequent ion regeneration, consumes a large amount of acid and alkali, and has a certain degree of environmental damage.
2. The second method uses a two-stage reverse osmosis equipment, which is characterized by a higher initial injection rate than using ion exchange resin, but does not require resin regeneration. The disadvantage is that the relevant membrane components need to be cleaned or replaced regularly, and the water quality is relatively low, mostly only about 1 US/cm. Therefore, when the quality requirements are higher, first stage reverse osmosis is often used followed by mixed bed (yin-yang double bed) for quality control.
3. The third method is to use reverse osmosis for pretreatment and then equip it with an electro deionization (EDI) device. This is currently the most economical and environmentally friendly process for producing ultrapure water, which does not require regeneration with acid or alkali and can continuously produce ultrapure water without causing much damage to the environment. Its disadvantage is that the initial investment is relatively expensive compared to the above two methods. Using multi-stage reverse osmosis and mixed bed to produce ultrapure water, with multi-media filtration as pretreatment, two-stage reverse osmosis is used to produce ultrapure water. Our company produces chemical ultrapure water equipment for the chemical industry. The characteristics of pure water treatment equipment for the chemical industry. The traditional preparation process of ultrapure water usually uses ion exchange resin for production, but the use of ion exchange resin usually requires frequent resin regeneration, which consumes material resources and labor. After years of practice and combined with the latest membrane separation technology, our company often uses a combination of reverse osmosis and ion exchange system (or EDI) to prepare ultrapure water. Compared with traditional processes, this process has the advantage of low operating costs (the regeneration cycle of ion exchangers is greatly extended) and reliable operation. Compared with the latest technology, it has the advantages of low cost and easy availability of consumables. The reverse osmosis process technology is advanced and reliable. Preparation of ultrapure water using carbon steel tank ion exchange resin
Application scope of pure water treatment equipment for ultra pure water chemical industry
The solvents and cleaning processes used in the production and processing of chemical materials
Ultra pure materials and ultra pure chemical reagents
Laboratory and pilot workshop
Chemical materials used in electronic semiconductors and integrated circuit boards
Production, processing, and purification of quartz and silicon materials
High purity ink, inkjet in fax printers, nano ink
