Comprehensive treatment concept for Legionella control

Comprehensive treatment concept for Legionella control.

Legionella is a gram-negative bacteria responsible for different types of human diseases. One of this illness is Legionnaires disease, atypical pneumonia which signs and symptoms include a cough, shortness of breath, high fever, muscle pains, and headaches. This often begins two to ten days after being exposed to an aerosol that contains the bacteria. The bacterium is found naturally in fresh water. If this water is not treated correctly before to enter in the industrial systems, bacterias can contaminate hot water tanks and hot tubs. Therefore, Legionella in cooling towers is a well-known and very serious topic.

Untreated and no surveillance systems with biofilm, corrosion and fouling are the perfect environment for the growth of Legionella. Also, warm water, like showers and fountains can be an especially favourable environment for Legionella. For these reasons, it is highly recommended to treat hot water systems. Otherwise, any infection with Legionella will lead to serious damage to your health. Legionella prevention is just as indispensable as a quick and reliable Legionella analysis. Legionella analysis according to ISO 11731 on Legionella spp. is done by cultivating the Legionella on defined nutrient media. The difficulty of detection is due to the presence of accompanying flora in the wastewater. 
In addition, Legionella requires 9-10 days longer time to grow in the nutrient medium. In comparison, existing accompanying germs can already form colonies on the nutrient medium in a period of 2-3 days. In order to minimize the disruption of existing accompanying flora, methods for pretreatment are described in ISO 11731 and also in the new UBA recommendation. The effort for the examination laboratories has increased significantly with the new requirements. 

Kurita with a  long experience in treating the systems against Legionella provide solutions and professional advice:

  • Comprehensive treatments combining biocides and biodispersants to effectively control biofilm growth.
  • Specific biocides treatment for drinking water, which is especially recommended against microbiological and Legionella growth.

Dilurit® BC S-System: our innovative oxidizing in-situ system is high effective against Legionella. According to DIN EN 13623, our Dilurit® BC S-System fulfilled all requirements.

For more information about our Legionella control portfolio:

Why choose Kurita?

We as Kurita provide a comprehensive treatment concept for Legionella control including risk analyses and training according to VDI and 42. BImSchV.

Our professional team supports you with in-house training and legionella risk assessment according to hygienic and technical aspects.

Do you need support? Our qualified experts will be glad to advise you personally and individually.