In industries closely related to our lives, we often see the shadow of EDI ultra pure water equipment, such as the electronics and optoelectronics industry, chemical industry, biopharmaceutical industry, precision machinery industry, electroplating and coating industry, cosmetics industry, etc. These industries all have a common feature, which is that their product manufacturing requires high purity of water quality, and EDI pure water equipment perfectly solves this problem.
So how does EDI pure water equipment work? Today, I will explain in detail the working principle of EDI ultra pure water equipment for everyone.
We need to know that the EDI ultra pure water equipment is composed of three units: pre-treatment filtration equipment, reverse osmosis equipment, and EDI module. The pre-treatment filtration equipment and reverse osmosis equipment can purify raw water to meet drinking water standards, while the EDI module achieves the target purity by electrolyzing water quality and can produce ultra pure water with a resistivity of up to 18M Ω· cm.
Principles of EDI Ultra Pure Water Equipment
Through the selective permeation of cations and anions by cation and anion membranes, as well as the exchange of ions in water by ion exchange resins, directional migration of ions in water is achieved, thus achieving deep purification and desalination of water. Water undergoes electrolysis to produce a large amount of H+and OH -, which continuously regenerate the anions and cations in the ion membrane, supplementing the ion exchange resin without stopping the machine due to regeneration.
Electric desalination EDI module
By understanding the electric desalination EDI module, we can better comprehend the working principle of EDI ultra pure water equipment. The flexibility of the electric desalination EDI module lies in the ability to achieve the desired purity by combining and matching different numbers of modules according to the requirements of different industries for water quality purity. For example, high-pressure boilers must use desalinated water as feed water, and national or industry standards for water boilers require water quality within the range of 0.5-10M Ω. cm, and EDI ultra pure water equipment precisely meets this water treatment requirement.
