Desalination of Cooling Towers

Using untreated or partially softened water as the feed water for cooling water circuits or air washers usually causes problems such as:

– Limescale,
– Biological deposits by myxobacteria and algae (bacterial contamination)
– Corrosion of metallic materials.

Automatic monitoring and conditioning of the circulating water is important to prevent this from happening.

• Desalination can be controlled either by conductance or by TDS. There is a locking mechanism to stop desalination after a biocide dosing. The duration of desalination can be monitored.
• The biocide dosing may either take place after a certain number of days or regularly on certain days of the week at a fixed time. Preliminary desalination is available as an option.
• For quantity-based inhibitor dosing, there are various adjustment options available for the dosing point and dosing period.
• Circulation may either take place after a certain number of days or regularly on certain days of the week at a fixed time.
• In addition, limit values, for example for temperature (min and max) or pH value (min and max) can be monitored.