Which process helps in removing gases dissolved in water during treatment?

Aeration is the process that specifically helps in removing gases dissolved in water during treatment. This method involves increasing the surface area of the water, allowing gases such as oxygen, carbon dioxide, and volatile organic compounds to escape into the atmosphere. By facilitating this exchange, aeration effectively reduces the concentration of unwanted gases in the water, which can be essential for improving water quality and making it safer for consumption.

The effectiveness of aeration in removing gases is particularly important in various water treatment processes, including the prevention of corrosion in distribution systems and the enhancement of biological treatment processes, where oxygen levels are crucial for the activity of aerobic microorganisms.

Other methods, such as filtration, coagulation, and chlorination, serve different purposes in water treatment. Filtration is primarily aimed at removing suspended solids and particulate matter, coagulation focuses on aggregating smaller particles to improve removal, and chlorination is a disinfection method used to kill pathogens. While these processes are vital for ensuring clean and safe water, they do not directly address the removal of dissolved gases like aeration does.