What is the term for the process used in water treatment to dissolve air into water?

The process used in water treatment to dissolve air into water is known as aeration. During aeration, the water is exposed to air, which allows for the transfer of oxygen and other gases into the water. This process is crucial for various reasons, such as enhancing the ability of the water to support aquatic life by increasing its oxygen content, removing volatile organic compounds, and promoting the oxidation of iron and manganese, which aids in their removal from the water.

Aeration can be carried out in several ways, including surface aeration, where water falls through the air, or subsurface aeration, where air is injected directly into the water. This process might also involve mixing water and air to achieve optimal gas exchange, ultimately contributing to improved water quality and taste.

In the context of drinking water treatment, aeration plays a vital role in preparing water for further treatment processes and ensuring that it is safe and palatable.