The preparation of ultra-pure water treatment equipment in the electronics industry adopts bipolar reverse osmosis host plus EDI

Preparation of ultra-pure water treatment equipment for electronic industry

Bipolar reverse osmosis to produce ultrapure water treatment equipment for electronics industry using bipolar reverse osmosis host plus EDI

Process flow for preparing ultrapure water for electronic industry

The process of preparing super water in the electronics industry is roughly divided into the following categories:

  1. The traditional water treatment method using ion exchange resin to prepare ultrapure water, the basic process flow is: raw water → sand carbon filter → precision filter → raw water tank → positive bed → negative bed → mixed bed (compound bed) → pure Water tank→pure water pump→post precision filter→water point
  2. The combination of reverse osmosis water treatment equipment and ion exchange equipment is adopted. The basic process flow is: raw water → sand carbon filter → precision filter → raw water tank → reverse osmosis equipment → mixed bed (complex bed) → pure water tank→pure water pump→post precision filter→water point
  3. The combination of reverse osmosis water treatment equipment and electrodeionization (EDI) equipment is used. This is the latest process for preparing ultrapure water, and it is also an environmentally friendly, economical and promising ultrapure water preparation. The basic process flow is: raw water→sand carbon filter→precision filter→raw water tank→reverse osmosis equipment→electrodeionization (EDI)→pure water tank→pure water pump→post precision filter→water point

Comparison of Three Processes for Preparing Ultrapure Water for Electronic Industry

At present, there are basically the above three processes for preparing ultrapure water for the electronics industry. Their advantages and disadvantages are listed below:

  1. The first type of ion exchange resin has the advantages of less initial investment and less space occupied, but the disadvantage is that it requires frequent ion regeneration, consumes a lot of acid and alkali, and has certain damage to the environment.
  2. The second type uses reverse osmosis as pretreatment and then is equipped with ion exchange equipment. Its characteristics are that the initial injection time is higher than that of ion exchange resin, but the regeneration cycle of ion equipment is relatively long, and the acid and alkali consumption is higher than that of simply using ion exchange resin. Resin is a lot less in the way. But it is still destructive to the environment.
  3. The third method uses reverse osmosis as pretreatment and is equipped with an electrodeionization (EDI) device. This is the most economical and environmentally friendly process for producing ultrapure water at present, without the need for acid and alkali. After regeneration, ultrapure water can be continuously produced, which is not harmful to the environment. The disadvantage is that the initial investment is too expensive compared to the above two methods.

Xi’an CHIWATEC Water Treatment Technology is a high-tech enterprise specialized in various water processing devices. Aside from these individual products, which cover a number of types and series, we can also help with related comprehensive engineering projects. Thanks to our hard work and dedication upon our founding, we are now one of the fastest-developing water treatment equipment manufacturers in Western China.

Further reading:

USA RO membrane Water Filter Plant

Do you have a water treatment project we can help with

Designing,machining,installing,commissioning, customize and one-stop service

    We will answer your email shortly!

    FOLLOW US