Cooling Tower Water Treatment

Evaporative Cooling Tower Water Treatment

Evaporative cooling systems are used to transfer heat from an application to the atmosphere via the release of latent heat as some of the water passing through a cooling tower undergoes a state change from liquid to vapor (evaporation). The cooling tower water that evaporates is pure, therefore the impurities that are in the remaining liquid water will concentrate over time. As the concentration increases; various minerals, including calcium carbonate, have a tendency to form crystals on the heat transfer surface, which ultimately reduces the efficiency of the equipment. These concentrations are known as scaling and is one of the major reasons for cooling tower water treatment.

Corrosion and Scaling Prevention

To prevent this problem various products are used that may modify the crystals, disperse the crystals, or increase the threshold at which they form thus preventing of scaling of a heat exchange surface. Another  major issue that arises in evaporative cooling tower systems is corrosion.

All water is corrosive, some more corrosive than others. So depending on the water chemistry, a corrosion inhibitor may need to be fed to protect the system from corrosion. Finally, any evaporative cooling tower system will be subject to biological fouling. Typically an alternating biocide program of an oxidizing and non-oxidizing biocide will be implemented to prevent biological fouling in most cooling tower water treatment programs.

cooling tower water treatment

Talk To Our Water Treatment Experts

Of course, this is just a brief overview of thinking about how to treat cooling tower water. Your FCT Water Representative would love to answer any further questions you may have about other treatment options and steps in the process of a complete water treatment program.

We custom build a program to meet your unique needs. We know cooling tower water treatment isn’t a one-size-fits-all. Our custom programs will help you increase efficiency and reduce waste.

Let’s Talk About Your Water

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