COOLING TOWERS

When the water in a cooling tower spreads over the cooling exchange elements, some of it breaks up into tiny water droplets known as aerosols. Aerosols can contain microorganisms found in water, including Legionella bacteria. These aerosols are so tiny and light they can spread over many square kilometres. When people inhale aerosols, Legionella bacteria can cause Legionnaires’ disease. Cooling tower water thus requires both microbiological purification and particle purification. Today, microbiological purification often involves chemicals, while particle purification involves filtering out pollen, dust and other airborne particles.

Integrating Wallenius AOT into a purification system makes it possible to prevent Legionella being spread with the water. Besides their health-related advantages, cooling towers designed according to a concept of this kind contribute to a number of financial and environmental benefits. The system provides energy-saving water purification compared with traditional high-temperature treatment and purification that is sustainable thanks to the possibility to reduce chemical additives.

Underneath is showing a typical loop-installation of 2 x M900BE cleaners combined with a pump, a filter and valves for the loop.