MIX BED DEIONIZER
A mix bed deionizer (DI) is a type of water treatment system that is used to remove ions, such as cations and anions, from water. It is typically used to produce high-purity water for laboratory, pharmaceutical, and other applications where the presence of dissolved ions can be detrimental.
A mix bed DI system consists of two tanks that are filled with ion exchange resins, which are used to remove ions from the water. One tank contains a cation exchange resin that removes positively charged ions, such as calcium and magnesium, from the water, while the other tank contains an anion exchange resin that removes negatively charged ions, such as chlorine and sulfate. As the water passes through the tanks, the ions are exchanged with hydrogen or hydroxide ions, depending on the type of resin, and the purified water is collected on the other side. Mix bed DI systems are known for their ability to produce very high-purity water and are widely used in a variety of applications.
De-ionization is the removal or reduction of positive ions called cations and negative ions called anions from the water supply. High purity water from 1.0 to 18.3 mega ohms/cm and a silica level of .10 ppm to 0.01 ppm or lower can be produced. The cation resin is converted to the hydrogen form and exchanges positive ions for hydrogen. The Anion resin is converted to the hydroxyl form and exchanges the negative ions for hydroxyl.
Resins are designed specifically for De-ionizer applications regenerating with approximately 6.4 pounds of 100% of HCI per cubic foot for hydroxyl
Resins are designed specifically for deionizer applications, and typically regenerating with 6.4 lbs of 100% HCI per Cubic foot of cation resin and 8.0 lbs. of 100% NaOH per cubic foot for anion resin. Lakeside resins provide high chemical and physical stability, lower pressure drop and greater resistance to bead breakage. Strong or weak base resins are selected based upon the customers water quality requirements. Type 1 or 2 Anion resins are selected based upon the silica residuals required for the specific application. Standard systems utilize pressure compensating educators for drawing chemical.