Ozone installation for cooling tower
Posted by Joel Leusink on May 24, 2011 under Ozone Products, Water Remediation | 
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Ozone has many applications. One of these applications is a biocide in cooling towers. Cooling towers recirculate the same water over and over again within a mostly closed loop system. This water must have chemical treatment to maintain clean water with no bacteria or algae growth. Ozone can replace traditional chemicals and offer a green solution to this application.
We have recently completed an installation of a 300 g/hr ozone generation system into a large cooling tower at an ethanol plant. The use of ozone will replace chlorine and bi-sulfate chemical additions. Using ozone will eliminate the need to transport, store, and purchase bulk chemicals.
The ozone system produces ozone from a 300 g/hr water cooled ozone generator. This will produce 300 g/hr of ozone from 40 LPM of oxygen at 9% by weight from oxygen. Oxygen is provided by an Air-Sep AS-D oxygen concentrator using compressed air to provide 40 LPM of oxygen feed gas for the ozone generator. The AS-D is fed with compressed air supplied by the customers current compressed air systems.
Ozone is injected directly into a water recirculation line using a custom ozone injection point. The picture below shows the ozone gas plumbed into this injection point. This injection point will diffuse the ozone into the pipe via micro bubbles. This pipe recirculates ~300 gpm of water, this water travels 150 yards then discharges into the cooling tower basin. This pipe distance allows the ozone to achieve excellent mass transfer efficiency.
Currently this ozone system is rented by the customer with the option to purchase at any time. This offers great flexibility for the customer, and cost savings over the previous chemical additions. For information on our ozone solutions for your application contact us today.