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  • Money savings due to lower operating costs over time
  • No on-site chemical inventory
  • No toxicant discharge, chloramines
  • Water conservation due to no TDS buildup from disinfectants
  • Ozone is produced on-site and requires no storage of dangerous chemicals
  • Lower corrosion rates of the system
  • No regular disinfection system maintenance required
  • No special training for employees operating the system
  • Elimination of Legionella spread and hazard to human health
  • Eligibility for LEED certification


The most common problems in cooling water systems are deposition, corrosion, and biofouling. Microbiological growth of pathogenic bacteria such as Legionella Pneumophila contributes to amplifying deposition, corrosion, and fouling by acting as a catalyst or nucleation point. The traditional methods use chemical inhibitors and biocides, but they also present the problems of handling, storage, and environmental impacts. The use of ozone in cooling tower treatment has significantly increased in recent years offering a great alternative to these problems.

With advancements in generator efficiency and declining costs, Ozone is becoming a popular alternative. In addition to being an excellent biocide, Ozone decomposes rapidly, so any toxicity concerns are minimal. Furthermore, they have the potential for water conservation.

According to scientific studies, the recommended ozone concentration in the cooling towers should be no lower than 0.1 g/m3 (ppm). Following the recommendations, it is relatively simple to select an ozone generator knowing the total CT water capacity. I.e. for a small cooling tower with a capacity is 10 m3 (relatively small) only 1 g  of ozone will need to be dissolved in a tower’s sump water (0.1 g/m3 x 10m3). However, the half-life of ozone at 35˚C is ~8 minutes and to compensate for ozone decay 7.5 g/h amount of ozone should be dissolved

(1 g ÷ 0.13h ÷ 0.7)  = 10.7 g/h ozone production.

This is the amount of ozone that must be dissolved in the water (not the amount of ozone gas produced by the generator). Since the amount of dissolved ozone depends on the concentration of ozone gas produced. The performance of the generator must be taken into consideration, at Absolute Ozone we will offer you the best generator, with the highest concentration available in air-cooled generators, with guaranteed performance.

Absolute Ozone® NANO generator will be perfect for this application. Also, it will offer contingency when ozone demand increases by seasonal organic dust blown.

Click here to view the NANO 15 Ozone Generator

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