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.
Since the amount of dissolved ozone depends on the concentration of ozone gas produced. We will offer you the best generator for your application depending on your specific requirement.
Absolute Ozone® NANO generator will be perfect for this application. Also, it will offer contingency when ozone demand increases by seasonal organic dust blown.
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