The cooling tower institute ...

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The cooling tower institute has general guidelines. Bacteria are always present. There is no such thing as sterile. Legionella is easily killed in typically treated water by any reputable chemical suppler. Shock treatment or continuous residual treatments are normally quite effective. Drift and other means of producing aerosols of the water should be looked after as well. If you are treating the tower adequately to prevent slime buildup in the fill, normally, legionella isn't an issue.

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Hi Scott, still believing that chemical treatment is the only solution? And normally NO PROBLEM?

See this list as only a fragment of the number of cases where legionella caused deadly diseases.

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

Chemicals are effective no question, disinfecting the water, but in 100% of all cases, the biofilmn or slime is not removed or only in smaller parts - openings in the slime surface allowing even faster new germ and bakteria growth. You just invent an endless spiral - of continuous chemical usage. This is named perfect management? Just focus on one effect and ignore the impact of the chemicals to the environment? The continuous costs to supply these chemicals and the costs to neutralize thsi chemicals in waste water treatment?

What is so difficult to at least seeking for other solutions?

We can proof in various applications the effectiveness of non chemical treatments for years.

Interested? 

Then contact me: gerhard0261@gmail.com

Best Regards, Gerhard Mangold

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