What is the process called that brings noxious gases into contact with water?

The process that brings noxious gases into contact with water is known as aeration. During aeration, air is introduced into water, facilitating the transfer of gases from the water to the atmosphere. This process effectively reduces the concentration of harmful gases, such as carbon dioxide and hydrogen sulfide, by allowing them to escape into the air.

In many water treatment systems, aeration is employed to improve water quality by removing volatile compounds and odors, thereby making the water safer for consumption and more pleasant for use. Proper aeration helps maintain optimal water conditions, especially in systems where unwanted gases can compromise health or environmental standards.

The other options, such as filtration, chlorination, and neutralization, involve different processes. Filtration primarily focuses on removing solid particles and contaminants from water, chlorination is a chemical disinfection method to eliminate pathogens, and neutralization refers to the chemical process of balancing acidic and basic substances. While these processes may contribute to water purification, they do not specifically target the removal of noxious gases in the same manner as aeration does.