De-Mineralization Plants & Mixed Bed Units

For pure water and ultra-pure water for use as make-up to high-pressure boilers and for use in the pharmaceutical industry, micro-electronics industry and chemical/petrochemical industries, der went water systems is available. our range of cation and anion exchange units are up to a flow rate 9. 7m3/hr and the units employ both normal and counter-flow regeneration. These smaller standard units are: • skid-mounted • complete with automatic conductivity instigated regeneration • central control panel control valves are either the well-proven 5-cycle multi port valve or, for larger units, a frontal manifold with individual corrosion-resistant valves.

Cation and Anion resins are combined in a GRP or stainless steel vessel to produce ultra pure water. Usually a mixed bed polishing 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 dependant upon the incoming 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.