Tips on choosing the right ozone generator for your application

Choosing the right ozone generator for your application is a daunting task.  This guide is meant to help dispell the myths and give you the information you need to make the right decision.

 

Dry air vs Oxygen feed-gas:

Ozone can be produced from either oxygen or dry-air feed-gas. Ozone is produced more efficiently from oxygen than air as there is more oxygen to produce ozone from. Most ozone generators produce 2 – 3x more ozone from oxygen than from air. However, producing oxygen requires a great deal of energy. Therefore, review ozone generator options, oxygen source options, and dry-air options to ensure the most cost effective and energy efficient option for long-term operation.

 

Air cooled vs Water cooled corona cell:

Converting oxygen to ozone requires an energy transfer. This energy transfer will produce heat as a by-product. This heat must be removed from the ozone generator either with fans for air-cooling, water for water cooling, or both. Most small ozone generators are air cooled, most large ozone generators are water cooled.

 

UV vs Corona Discharge vs Electrolytic:

Ozone can be produced via UV light, corona discharge, or electrolytic. Click link below for more details on how these methods work. Overview listed here.

 

UV Ozone Generators

Ozone is produced from air at very low concentrations. UV light cannot produce ozone at higher concentrations than about 1% by weight, and most are far below that. A UV ozone generator is a great option for high flow – low concentration ozone applications. Air treatment applications commonly use UV ozone generators with great success. Due to the low concentration of ozone production UV ozone generators are not applicable for many water treatment application. Also, UV ozone generators are not cost effective at ozone production rates greater than about 10 g/hr.

 

Corona Discharge Ozone Generators

Most every industrial ozone generator machine uses corona discharge to produce ozone. Ozone can be produced at up to 20% by weight with no limit to ozone production. Ozone is produced from oxygen or dry-air, if air is used it must be dry duet to by-product creation in the ozone generation process.

 

Electrolytic Ozone Generators

Ozone is produced electrolytically directly within water, this eliminates the need for gas to liquid contacting equipment used for UV Sterilizer or Corona Discharge ozone generators. Water must be very clean for electrolytic ozone production due to contamination and break-down of the anode and cathode used for this method.


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