EDI ultra pure water equipment for lighting production

EDI ultra pure water equipment for lighting productionWorking principle:

It is a new technology for preparing ultrapure water (high-purity water) that organically combines electrodialysis membrane separation technology with ion exchange technology. It utilizes the polarization phenomenon during electrodialysis to electrochemically regenerate the ion exchange resin filled in the freshwater chamber.

The EDI membrane stack is mainly composed of alternating cation exchange membranes, concentrated water chambers, anion exchange membranes, fresh water chambers, and positive and negative electrodes. Under the action of a direct current electric field, cations and anions in the ion exchange resin in the freshwater chamber migrate along the channels formed by the resin and membrane towards the negative and positive directions, respectively. Cations pass through the cation exchange membrane, anions pass through the anion exchange membrane, and enter the concentrated water chamber to form concentrated water. At the same time, the cations and anions in the EDI inlet are exchanged with the hydrogen ions and hydroxide ions in the ion exchange resin to form ultrapure water (high-purity water). The excessive current causes a large amount of hydrogen ions and hydroxide ions generated by water electrolysis to continuously regenerate the ion exchange resin. Traditional ion exchange requires chemical intermittent regeneration after the ion exchange resin is saturated. The resin in the EDI membrane stack is continuously regenerated through electrolysis of water, and the operation is continuous without the need for acid-base chemical regeneration. The membrane stack is mainly composed of alternating cation exchange membranes, concentrated water chambers, anion exchange membranes, fresh water chambers, and positive and negative electrodes. Under the action of a direct current electric field, cations and anions in the ion exchange resin in the freshwater chamber migrate along the channels formed by the resin and membrane towards the negative and positive directions, respectively. Cations pass through the cation exchange membrane, anions pass through the anion exchange membrane, and enter the concentrated water chamber to form concentrated water. At the same time, the cations and anions in the EDI inlet are exchanged with the hydrogen ions and hydroxide ions in the ion exchange resin to form ultrapure water.

EDI ultra pure water equipment for lighting productionUsed in other fields:

EDI deionized water equipment has a wide range of applications in the food industry, chemical industry, electroplating and metal surface treatment, electronics industry, pharmaceutical industry, power industry, etc.