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 > Cooling towers

A cooling tower carries off the heat of an energy generating station or an industrial installation. Cooling towers are also used with air conditioning. They therefore stand on dwelling-houses and offices. The water vapour from these cooling towers can contain detrimental bacteria, including Legionella. For this reason these towers must be checked periodically.

A very important reason for using biocides in cooling towers is to prevent the growth of Legionella. So far chlorine was the most used biocide to deal with this problem.

Although chlorine is widely used as an oxidizing agent, it has many inherent environmental, health, and safety concerns associated with it. The major disadvantage of chlorine use is the formation of chlorinated organic in the water, which can have a negative effect on the environment and process components. Another disadvantage of chlorine is potential safety problems associated with chlorine gas.

In addition, chlorine tends to react with ammonia or nitrogen when they are present in the water, forming chloramines, which are believed to be harmful to the environment. Formation of chloramines requires the addition of excess chlorine to effectively disinfect the water, since chloramines reduce the effectiveness of the hypochlorous acid, thus wasting the chlorine. Chlorine addition also effectively lowers the pH of the water as hydrochloric and hypochlorous acids form, making pH control more difficult.

As a result of the many problems associated with chlorine, many other oxidants are seeing more widespread use, such as our Novuswater.


  • Eliminates all pathogens in the circulation water (such as Legionella, Pseudomonas, E.coli, etc.) and maintains their numbers under the authorized CFU.
  • Has a long-lasting effect, so that recontamination of the circulation water is prevented.
  • Eliminates effectively so-called filament-forming bacteria and sulphate-reducing bacteria.
  • This is important to avoid corrosion, biological deposits and scale on the condenser tubes.
  • Eliminates biofilm effectively
  • Is not toxic to humans and animals, has no carcinogenic or mutagenic effect. It does not
    pollute the environment and is practically 100% biodegradable.
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