Aeration is used in water treatment as a pretreatment in the process of
removing iron and hydrogen sulfide (rotten egg smell) from water. Air is a
powerful oxidizer of both iron and hydrogen sulfide. It quickly converts
filterable ferrous iron to filterable ferric iron, and it reduces hydrogen
sulfide to elemental sulfur, which is easily removed from water by a filter.
Air stripping may be also used to reduce concentrations of volatile organics,
such as chloroform, as well as dissolved gases, such ammonia. Nonvolatile
organic compounds cannot be removed by air stripping.
Aeration as a water treatment practice is used for the following operations:
- ammonia and hydrogen sulfide
- carbon dioxide reduction
- oxidation of iron and
manganese found in many well waters (oxidation tower)
Gas removal by aeration is achieved as the level of gas in the water
approaches equilibrium with the level of the gas in the surrounding atmosphere.
The process is improved by an increase in temperature, aeration time, the
volume of air in contact with the water, and the surface area of water exposed
to the air. The efficiency of aeration is greater where the concentration of
the gas to be removed is high in the water and low in the atmosphere.
The complete removal of hydrogen sulfide should be combined with pH
reduction or chemical oxidation.
Residential Aeration System
160 gallons Aeration Tank System with Softener
Five Star Water System aeration tanks come complete assembled and are available in different sizes