What is the main function of aeration in water treatment?

The main function of aeration in water treatment is to reduce taste- and odor-causing compounds. During the aeration process, air is introduced into the water, allowing for the oxidation of various contaminants, including organic compounds and certain metals. This treatment effectively eliminates unpleasant tastes and odors, improving the overall quality of the water.

Aeration also helps in the removal of dissolved gases like hydrogen sulfide, which can contribute to off-putting smells. Additionally, increased oxygen levels enhance the biodegradation of organic materials present in the water, promoting the activity of microorganisms that consume these substances, thereby further assisting in their removal.

While aeration can influence sedimentation and coagulation processes indirectly, its primary goal is focused on improving taste and odor, making it a critical step in ensuring the aesthetic quality of drinking water.