Proper management of your industrial water purification systems is very necessary. Maintaining the hygiene of the tower will achieve the following: it will avoid the wastage of excess water, reduce the corrosion of the metallic parts, control biological growth and inhibit scale formation.
If you are familiar with an evaporative cooler, then it should not be difficult to understand how the cooling tower treatment works. However, the difference is that the principle of the cooling tower is done on a much grander scale. It requires a lot of water evaporation to reject large quantities of heat from a building’s mechanical system.
When the water in the cooling tower evaporates, the non-volatile components will remain in the sump of the cooling tower. In the water, there are more elements than you may think including carbonates, suspended dust particles, chlorides and other biological microorganisms.
As water is added to replenish the evaporating water, the dissolved and suspended elements continue to accumulate. If there are no measures taken to help control the concentration of these elements, it may reach a point where stuff starts coming out from the solution.
If you have ever seen an evaporative cooler whose pads have not been changed for a long time, you will understand what I mean. The pads may be encrusted with mineral deposits reaching a point where the blower can no longer pull air. This will produce a bounty of biological growth in the slump water. Therefore, you need to have a good water treatment strategy in place.
A good cooling tower water treatment program should address things like hardness, chlorides, dissolved solids, pH, and have a good strategy for biological control and a real blow down. It may require you to change the feed and blow down rates for the proper control.