How Does Ozone Get Into The Water?

Ozone gas must transfer from its natural gas state into a dissolved liquid state in order to oxidize dissolved contaminants in the water. This is probably the most important step in a successful ozone system.

There are two widely used methods to get the ozone gas entrained into the water; by diffusion or venturi methods.

Most ozone gas produced ultimately off gases to the atmosphere. In order to minimize off gassing, you must keep the gas under pressure for as long as possible for mass transfer to take place.

The venturi method is by far the best method for dissolving ozone. Water traveling through a venturi will create a pressure differential. By having a suction port at that point in pressure drop allows ozone gas to be pulled into the stream, entraining that gas into solution.

The diffusion method is far simpler, yet not as efficient in transferring gas into solution. The diffusion method entails pushing ozone gas into a body of water by the use of some air compressor. By pushing air through an ozone chamber, the gas is created and continues down through tubing into the bottom of some vessel.

To increase transfer of ozone into solution, a diffuser stone is used at the end of the ozone resistant Teflon® tubing to create maximum surface area of ozone bubbles. If you send the gas directly out of the tubing without a diffuser stone, you would have larger bubbles and less contact between water and ozone. This would create more off gassing and obviously less transfer of gas into solution.

– Authored by Tim Chew, Inside Sales, ClearWater Tech, LLC

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