Mix Bed Unit

Raindrops Water Technologies can design and make mixed bed polishing units to suit all of customer’s need. Cation and Anion resins are combined in a MSRL of FRP vessel to produce ultra pure water.

Usually a mixed bed unit contains strong acid Cation (SAC) resin and strong base Anion (SBA) resins combined to a ratio of approximately 40% Cation resin to 60% Anion resin. (All resin volumes are dependent upon the feed water analysis and the required quantity of treated water). Mixed bed polishers are typically installed when a water quality of less than 1 micro ohm conductivity is required. Normally mixed bed polishers are installed after a standard Reverse Osmosis or De mineraliser (DM Plant), to produce ultra high quality water.

The Cation resins in mixed bed units are of a higher specific gravity and settle at the bottom of the vessel at the same time the Anion resin will automatically float to the top.

Please note The Cation resin must be a strong acid Cation type (SAC) and the Anion resin must be a strong base Anion resin (SBA)

After a service cycle, each resin is regenerated as below

• (SAC) : Strong Acid Cation resin is washed with approx. 30% hydrochloric acid.
• (SBA) : Strong Base Anion is washed with approx. 26% caustic.

Please note

The above regenerate strengths refer to the values before being diluted by the mixed bed unit educator systems. Please contact Raindrops Water Technologies for further details.