is removed, and a venturi injector is installed. The injector’s diameter is smaller in the
middle, similar to squeezing or pinching a hose. The water traveling into the injector begins
to move faster. In the middle of the injector there is a small hole. As water is pumped
through the plumbing and past the hole, a vacuum is created. The amount of vacuum is
dependent on the amount of water flow through the injector – more water equals more
vacuum. If a small flexible hose or tube is attached to this small hole, a liquid or gas can be
drawn into the injector and mixed into the water. The goal is to make the smallest bubbles
possible and to keep the bubbles in contact with the water for as long as possible. The
ozone that does not get dissolved will kill or oxidize anything in the water.
How long will ozone last in my pool?
For the purification of water and air, it’s needed to produce ozone on-site. Because of its
short half-life, ozone will decay soon when produced. The half-life of ozone in water is about
30 minutes, which means that every half hour the ozone concentration will be reduced to
half its initial concentration. For example, when you have 8g/l, the concentration reduces
every 30 minutes as follows: 8; 4; 2; 1; etc. In practice, the half-life is shorter because a lot
of factors can influence the half-life. Factors are temperature, pH, concentration and sort
solutes. Because ozone reacts with all kinds of components, the concentration of ozone will
reduce quickly. When most of the components are oxidized, the residual ozone will remain,
and the concentration of ozone will reduce.
Will the temperature or humidity of the air/water affect ozone?
The temperature and humidity of the air will directly impact on the concentration of
ozone gas produced. The more humid and hotter the air, the less concentrated the ozone
produced will be. Likewise the temperature of the water has a similar effect; the cooler
the water the ozone is injected into, the more effective the ozone will be at removing
contaminants. Heated pools require 10-15% more ozone than traditional pools.
Is ozone safe for my pool equipment?
Most pool systems these days come supplied with the plumbing that is ozone-resistant,
example PVC piping. However, ozone gas can corrode metal and other materials such
as nylon and rubber. Care must be taken to check that all plumbing and piping between
the injection point (Venturi Injector) and the point of entry to the pool are made of ozone-
resistant materials. All our ozone generators are supplied with ozone-resistant accessories.
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