Use of Ozone for Cooling Towers. Paper360º July/August 2020

Water is the preferred medium for the extraction of heat from exothermic processes, so cooling towers are an important means of ensuring efficient and reliable operation of industrial plants like pulp and paper mills. Cooling water circulates in a loop where heat is taken up from the process and then discharged in the cooling tower. In the cooling tower the circulating water is brought into direct contact with air and cooled through evaporation.

The draft caused by the cooling tower draws in dust and other organic material and creates an ideal growth environment for bacteria and algae. This bacterial growth within a cooling tower is a constant problem and, if left unchecked, will result in a thick biofilm growth, loss of cooling tower efficiency, and corrosion. This biofilm can also harbor pathogens such as Legionella, resulting in a toxic environment and public health risk. 

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