Scaling, microbial growth and corrosion are common issues found in cooling towers that are not maintained properly. In this post, cooling tower manufacturers Ahmadabad will make you learn about the tricks and tips for controlling such issues in the cooling tower.

Illustration for article titled How To Control Scaling And Corrosion In Cooling Tower?em/em

Scaling- Water usually includes calcium carbonate CaCo3, silica, and iron. When these minerals stay in suspension or dissolve, they don’t cause any trouble to the equipment. However, when evaporation happens, the minerals are left behind. Eventually, the water becomes supersaturated and will be unable to hold the minerals in suspension. This causes mineral to fall out of suspension or precipitate. Because minerals have a natural electrical charge, they more get attracted to the metal surfaces of the equipment and lead to scaling.

The mineral content of water is expressed in terms or PPM or total dissolved solids (percentage). CaCo3 will precipitate and result in scaling faster than other minerals.


Microbial growth – Moist, warm environments are suitable for the bacteria, mould, slime, and other organisms to grow. If you fail to control the growth of microorganisms, they may cause restricted airflow, valves, clogged pumps, filters, and may also result in several other issues. There are experts that suggest the best way for controlling biological growth in the cooling tower is to clean it and perform disinfection process.

You can use right chemicals, electromagnetic energy, and manual cleaning. If you go with any chemical treatment, make sure you use the chemical in limit; otherwise the toxicity level of the water will get increased.


Corrosion protection- Oxidizing biocides can provide assured results for controlling bacteria. However, the sad part about these biocides (bromine, ozone, chlorine, etc.) is that they are very corrosive. Chlorine is widely used by people for water treatment since years due to its inexpensiveness. However, when it comes to effectiveness, chlorine doesn’t provide up to the mark performance and corrode the system more.

To prevent corrosion, you need to control the pH level of the water. If the pH is lower than the required range, the water will corrode unprotected metal components installed in the cooling tower system. If the pH level is high, scaling will happen on the equipment surfaces.


Chemical and sludge – If you previously treated your cooling tower with chemical, it is obvious that your system surface has lot of chemical deposits. When de-scaling process starts, finer chemicals like phosphates will be released from the deposits and enters the main flow stream of water. You should remove the sludge by cleaning the tower with clean water.

All these tips and tricks are shared by cooling tower manufacturers Ahmadabad. If you have any questions, ask in comments. They will respond to your query sooner.


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