Deionization 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 megohms/cm and a silica level of .10ppm to 0.01ppm 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. This ion exchange process removes the majority of the dissolved minerals and produces deionized water (H2O). Mixed bed systems utilize a single tank with thoroughly mixed resins. A mixed bed system produces a higher quality of deionized water compared to a two bed system. Ion exchange does not reduce the bacterial count of the water.
Standard working pressure is 100 PSIG maximum. The vessels are skid mounted with interconnecting piping, isolation valves and sediment strainer on the mixed-bed outlet. Standard systems have sight window assemblies included. A standard vinyl ester lining of 35-45 mils DFT is applied internally and 6-8 mils DFT safety blue epoxy finish coating is applied over the exterior of the vessel. The standard vessels are non-code constructed, but ASME code stamped and certified vessels are available. A rubber lining is also an available option.
Pressure 30-100 PSIG Temperature range 35F-100F Electrical: 120vac, 60Hz NEMA 4X FRP rated electrical enclosures, air flow regulator max 80psi.
Max. 10ft. vertical and discharged to an atmospheric floor drain sized to handle the maximum rinse rate of the system.
Resins are designed specifically for deionizer applications regenerating with approximately 6.4 pounds of 100% of HCI per cubic foot for cation resin and 8.0 pounds 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. Type 1 Anion resins are standard to produce the lowest silica leakages and 10% cross-linked cation resins for durability and performance. Standard Cation regeneration is with 32% HCl. Standard systems utilizes pressure compensating eductors for drawing chemical.
a standard feature that provides low flow protection and allows the unit to sit at zero flow and maintain optimum water quality. This eliminates the need for a pre-rinse, which minimizes the in service delay and saves on raw water use plus the waste water generated. The recirculation system is also used in the last step of the regeneration process to “recirculate to quality”. Sediment strainers are standard equipment on the cation and anion outlet piping.