Air contact systems (aeration systems) are primarily used for mixing air with the water, this aids the oxidisation of certain components in the water. One of the most common uses is to oxidise soluble Iron and Manganese into insoluble hydroxides.
The Mazzei injector draws in air, allowing the venturi effect to pull it into the inlet pipe to the contact vessel. The spring-loaded bypass, as well, is designed to open automatically for when a large volume of water is needed to backwash the system post-aeration.
The feed pressure and flow needs to be sufficient to create the venturi effect, the system will also need to be placed before any accumulator on a pressurised system; all other filtration should follow an accumulator.
It is important to avoid back pressure on the Mazzei also any filtration following the aeration should not be higher; flow controllers should only be used on the final filter.
