Final answer:
Aeration is the water-treatment process in which water is forced into the air to exchange certain components between the two phases.
Step-by-step explanation:
The water-treatment process in which water is forced into the air is called aeration.Aeration involves bringing air into intimate contact with water, usually to exchange certain components between the two phases. One purpose of aeration is oxygenation, but it can also help remove volatile organic substances, hydrogen sulfide, ammonia, and volatile organic compounds.