Hi Goksel, there are no ...

Hi Goksel,

there are no standards in reg. to bacteria population in cooling towers yet. But in Germany government is just releasing a new regulation that all cooling towers must be listed and min. 1 time per year tested through certified labs. The standard limit is 100 KBE (Germ developing entities) per 100 ml tested water. You are absolutly right, there are many cases world wide where legionella have been spread from cooling towers and caused diseases and fatal casualties (approx. 10% mortality rate) see following list (only few of all known cases)

Year    Location                                            Cause                  # Death        # Infected
2014    Villa Franca Portugal                      Cooling Tower      10                   334
2014     Jülich, Germany                             Cooling  Tower      1                     70
2013    Wesely Ohio, USA ,                         Cooling Tower       6                    39
2013    Warstein, Germany                        Cooling Tower       2                    165
 

We have installed our chemical free disinfection system in following cooling tower apploications:

Air Washer Washer  EADS Munic 2008
Air Washer Ministery of Interieur Vienna  2005 
Air Washer Washer State Opera Vienna  2006
Air Washer Washer German National 2008 
Cooling Tower Technical University Vienna 2006
Cooling Tower MPI Garching 2012

Since then we tested the water quality continuously and never reached any critical KBE levels.

If you need detailed information about the system or you may have any other question reg. disinfection systems or regulations, please contact me any time.

Best regards, Gerhard