(1) Ion exchanger An ion exchanger is a commonly used device in water treatment. It can be used to soften or remove water by selecting a certain process. It mainly uses some ion exchangers to temporarily fix undesired ions in the raw water so that the content of these ions in the water can be reduced to the required level. Ions held by the exchanger are released in the regenerant and the exchanger can be reused. In other words, it is essentially a physical chemical reaction between an insoluble electrolyte (resin) and another electrolyte in a solution, that is, an exchange reaction of exchangeable ions on the resin with other isotropic ions in the solution.
(2) Electrodialysis Electrodialysis As a new technology for separation, concentration, purification and recovery processes in the industry, it is widely used in chemical, pharmaceutical, food and other industries. The applications in the food industry are mainly concentrated in soft drinks, beer, and beer. For the purification of water, it is used in soft drink plants to soften (desalt) water. Electrodialysis is an ion exchange membrane with selective permeability and good conductivity. Under the action of an external DC electric field, the anions and cations in the raw water pass through the anion exchange membrane according to the principle of anisotropic absorption and homosexual repulsion. Cation exchange membrane to achieve a purification of a technology.