Is it true that the use of aeration tanks is one of the key treatment methods for domestic sewage?

Domestic sewage refers to the wastewater generated from household activities, such as bathing, washing clothes and dishes, flushing toilets, and disposing of food waste. Domestic wastewater treatment is the process of removing contaminants from household sewage water to make it safe for discharge into the environment. The steps involved typically include collection, screening, primary treatment, secondary treatment(aeration tank), tertiary treatment, and discharge.

Aeration tanks are commonly used in the treatment of domestic sewage, where the air is pumped to promote the growth of microorganisms that break down pollutants in the sewage.