Ozone for Cooling Water Disinfection
For cooling water treatment in closed or open circulations, ozone, as the strongest disinfectant used for water treatment, is ideally-qualified. Its high activity is ensured at any pH value of the cooling water. Its major advantage is, that no undesired by-products are developed and ozone itself decomposes to oxygen. Its disadvantage is a low half-life and a weak solubility in water. Nevertheless, it is increasingly used in cooling water due to its low operating costs and it’s ecological benefit. Due to it’s highest biocide activity no resistances can be developed. Additionally, contamination of the cooling water with Legionella is impossible in the presence of ozone.
To protect metallic parts in the cooling water circulation system against corrosion, special inhibitors can be used. By reacting, ozone decomposes to harmless oxygen. For that reason ecological problems are avoided even with strongly contaminated cooling water. The application is very economical because, with the exception of electric energy, oxygen, (either from the air or pure oxygen) and cooling water, no additional operating resources are necessary.
With the help of DULCOTEST® - sensors, a measurement-dependent metering of ozone is possible.
Advantages
- high efficacy even at low concentrations at any pH value, thus less corrosion
- no microbiological resistances
- no contamination with Legionella
no contamination with Legionella low operating costs high environmental compatibility, no undesired side products online-measurement possibleno microbiological resistances no contamination with Legionella no contamination with Legionella low operating costs high environmental compatibility, no undesired side products online-measurement possibleDisadvantages
- low half-life
- weak solubility in water
ProMinent Bello Zon® plants, together with corresponding measurement and control technologies DULCOMETER® and/or DULCOTEST®, comprise optimally tuned disinfection systems for cooling water treatment.
