Softening 2016-11-02T10:47:41+00:00

Water softening for process water

Hardness in process water

Hard water presents high concentration of calcium and/or magnesium. These ions lead to incrustation of piping and machinery, especially in case of high temperatures. Because of that above all boiler feed water should be softened.

But even cold water (e.g. in cooling water circuits and cooling towers) may cause technical problems due to hardness.

In addition to that water softening may be necessary as pre-treatment for reverse osmosis systems or for other types of process water.


  • Very quick and easy intallation
  • Ion exchanger integrated inside the salt tank
  • Low space requirements
  • Perfect for low to medium water consumption
  • Arbitrarily eligible size of external salt tank
  • Higher posible capacity than cabinet softeners
  • Perfect fot medium water consumption
  • Permanent flow of softened water
  • Very high capacities possible
  • Perfect for industrial application
  • Permanent flow of softened water
  • Very low pressure drop due to special control valve
  • Perfect for industrial application
Cabinet_water_softener Water_softener_single Double_water_softener Threefold_softener_stand

Technology and options

GTWE water softeners remove calcium and magnesium ions using an ion exchange mechanism. Calcium and magnesium ions are temporarily bonded to a special (synthetic) resin. To regenerate this resin, a highly concentrated sodium chloride solution is used, replacing the calcium and magnesium ions by sodium. A regeneration step is triggered by time, volume or some quality parameters of the water. For the latter it may be necessary to install special sensors. If a continuous soft water flow (also during the regeneration cycle) is necessary one can use double or triple softeners.

GTWE water softeners have to comply with your special requirements (typical volume, max flow rate, hardness, etc.). It is possible to integrate other components into your water treatment system – even to deliver a mobile/preinstalled system in a 20- or 40 foot container.

Alternative techniques

Depending on your special situation one may consider to use a nano filtrations system instead. The latter will reduce the concentration of multivalent ions like calcium or magnesium while monovalent ions can pass nearly unhindered.