Two Bed Deionizer

Deionizers (DI) remove both cations and anions, releasing hydrogen ions (H+) in exchange for the former, and hydroxyl ions (OH-) for the latter. The hydrogen and hydroxyl ions subsequently combine to form pure water.

Deionizers are most commonly used when ionic contamination is such that reverse osmosis alone cannot be relied upon to produce water of acceptable quality. In such most instances, mixed bed deionizers may be placed downstream of the reverse osmosis unit, completing the purification process.A wide variety of public water vending machines as well as many industrial applications in the electronics industry operate in this manner.

Special Features:

• Optional recirculation pumps
• Parallel or Series Regeneration
• Programmable purge prior to regeneration
• 12 or 24 volt operation (120/60hz/1pH transformer included)
• Custom programmable for automatic precision and simplicity.
• Delivers duplex DI water more economically than any other deionizer.
• The most advanced DI control package available.
• The digital-type meter displays both water quality and regeneration time remaining .
• A third tank polisher can be accommodated under the single control to pick up sodium or silica leakage, allowing you to easily attain higher purity water at less expense.
• A single set of printed circuit boards control both simultaneous and sequential regeneration. You simply select the desired regeneration mode with DIP switches.
• All programming features are easily accessible on the front panel, so there's no need to enter the control box and disrupt operations.
• Modular construction reduces downtime and simplifies troubleshooting and service.
• A low level sensor can be easily wired into the control to warn of low chemical volumes.
• Provisions for a remote control panel and auxiliary "START REGENERATION" source allow regeneration to be initiated and controlled from a location remote from the actual installation site.
• Level controlled shutoff to a product storage tank can be utilized with the addition of a simple float switch in the storage tank.
• Relays and fuses on the power printed circuit board provide for the operation of recirculation and supply pumps.

Working Principle:

The two-bed deionizer consists of two vessels - one containing a cation-exchange resin in the hydrogen (H+) form and the other containing an anion resin in the hydroxyl (OH-) form. Water flows through the cation column, whereupon all the cations are exchanged for hydrogen ions.To keep the water electrically balanced, for every monovalent cation, e.g. Na+, one hydrogen ion is exchanged and for every divalent cation, e.g. Ca2+, or Mg2+, two hydrogen ions are exchanged. The same principle applies when considering anion-exchange. The decationised water then flows through the anion column. This time, all the negatively charged ions are exchanged for hydroxide ions which then combine with the hydrogen ions to form water (H2O).

Construction Details:

It consists of an in-built pre filter and very high exchanging capacity non-corrosive CATION and ANION resin columns pre-fitted with imported RESINS for efficient results having treated water parameters conforming to IS- 1069/64. It yields chemically pure water equal to multiple distilled water having a conductivity of less than 10 micro siemens / cm and pH of 7.5 to 9pH. Fitted with sturdy PVC multi-control valve and connected direct to water taps. The conductivity meter operates on both AC supply and 9.0 V DC battery. Supplied with one plastic chemical proof regeneration tank and the complete unit in housed in a painted M.S. trolley for easy mobility. Available with analogue as