Cooling towers, also known as cooling towers, are frequently juxtaposed with the problem of legionella. In fact, precisely because of the special conditions that can be created inside these facilities, primarily the high water temperature and humidity, it is possible for bacteria that are harmful even to humans to thrive and spread, first and foremost legionella.
That is why it is crucial to carry out proper maintenance of cooling towers and various cooling and air conditioning systems.
Preventing legionella in cooling towers: what materials and components
When manufacturing Decsa cooling towers, they select materials that avoid water stagnation, which is the main cause of the proliferation of legionella bacteria. The surfaces of the employed materials must be smooth and have no porosity where the bacteria can nest.
That is why they manufacture evaporative cooling towers and condensers mainly in hot-dip galvanized Z-725 sheet steel.
Decsacoating Plus
Decsa also paid special attention to the selection of FRP panels which, for the cooling towers
To further reduce the risk of bacterial proliferation, users can also finish the above sheets with a special smooth epoxy powder coating, called Decsacoating Plus.
Decsa also paid special attention to the selection of FRP panels which, for the cooling towers, have a smooth, non-porous surface to prevent the nesting of legionella bacteria.
Correct maintenance
One means of transmission of the legionella bacteria is inhalation by aerosols, i.e. the tiny water droplets, which may have been contaminated by the legionella, and this is how bacterial pneumonia attacks humans.
To avoid the risk of bacteria spreading outside the cooling towers, highly efficient drift eliminators are fitted just before the air outlet area; these ensure a droplet loss of less than 0.001%. Correct maintenance of drift eliminators is essential to avoid the dragging out of water droplets that may be contaminated with Legionella.
Anti-legionella guidelines
Other than preventing the bacterium from getting out of the equipment, it is first of all necessary to prevent its formation and proliferation: thus, Decsa designed and manufactured all cooling towers according to the current <strong wg-1="">anti-legionella guidelines</strong>, which mainly provide for the manufacture of water collection basins with a self-draining slope, to avoid the dangerous stagnation of water, ideal habitat for the formation of biofilm and bacteria.
Moreover, all cooling towers must be designed and manufactured to avoid water stagnation.
Anti-legionella water treatment
To avoid problems with scaling, biofilm, legionella, professional water treatment is recommended
To prevent the internal environment of the cooling tower from becoming conducive to the proliferation of Legionella, other bacteria, or micro-organisms, the prevention of water stagnation in the water basin is important, especially during plant downtime.
To avoid problems with scaling, biofilm, legionella, or other micro-bacteria, professional water treatment is recommended. Such treatment takes place with chemical products that are not harmful to humans but very effective against such microorganisms and the prevention of salt formation.
Chemical and physical values
It is very important, when involving water treatment specialists, to provide them with the indications to study treatments that prevent the proliferation of bacteria in cooling towers.
Here are the main chemical and physical values accepted by Decsacooling towers based on the components used for their manufacturing.
