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De-Mineralization Plants & Mixed Bed Units
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De-Mineralization Plants & Mixed Bed Units
The second application is de-ionization. In de-ionization, the hardness and other ions that are initially in the water are removed and replaced with H+ and OH- ions, which can combine to form water. This is used in applications where extremely pure water is required. There are two solutions that are used to regenerate a de-ionizer. One is a concentrated acid, and the other is a concentrated base.
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| DM Plant  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. |
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| Mixed Bed Units  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. |
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DM Plant Mixed Bed Units
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