If you’re looking for a way to dissolve ozone into your water, you have a few different options. One common way is to use injectors or diffusers. Injectors and diffusers both work by breaking up the ozone gas into tiny bubbles that disperse through the water. This helps to ensure even distribution of ozone and improve its efficacy.

Which option is best for you depends on your specific needs and situation. In this blog post, we’ll take a closer look at how injectors and diffusers work and highlight some of their pros and cons.


Venturi Injector

A Venturi injector is a simple method of transporting ozone gas through water. The ozone gas dissolves in the water due to the pressure of the suction.


•          Very high ozone mass transfer rate (up to 98% if pressurized, 50-70% w/out pressure)

•          Requires water pump to initiate suction

•          Efficiency rarely decreases over time

•          No moving parts


Ozone is released through bubbles beneath the water’s surface, and the more depth there is, the more efficient it becomes. The smaller the bubbles are, the more effective they are. It’s difficult for water to flow in small spaces because of surface tension, as well as the formation of a water flow pattern during the contacting process that will disrupts gas bubbles’ tendency to re-form into larger ones.

Because fine-bubble diffusers work without the addition of extra energy, other than that supplied by initial gas compression, they are popular. The pressure of the gas discharged from the ozone generator is normally 0.7 to 1.0 Bar, which is enough to overcome the hydrostatic head and head loss caused by the gas distributor piping and diffusors. Ozone generated by ozonators under negative pressure can also be delivered via a diffusion system. It uses stainless steel liquid ring gas compressors to inject the ozone, as well as compressors operating at negative pressure.


•          Low ozone mass transfer rate (typically around 10-15%)

•          Efficiency increases with increased water depth

•          Requires air-pump to transfer oxygen below surface

•          Diffuser holes become fouled decreasing transfer efficiency

Bottom Line

Injectors and diffusers are two of the most common ways to add ozone into water. They both have their own benefits, so it is important to understand the difference between them before you make a purchase. If you’re still not sure which one is right for you, check out our blog post on Venturi Injector Vs Bubble Diffuser For Ozone“.