Adding AIR in order to provide oxygen. The oxygen helps to prevent wastewater from becoming septic and odorous, and it is necessary to support life of aerobic microorganisms that are used for wastewater treatment. Aerobic Refers to life or process which can occur only in the presence of oxygen.
aeration period The theoretical time, typically expressed in hours, during which mixed liquor is subjected to aeration in a biological reactor while undergoing activated sludge treatment. It is equal to the volume of the tank divided by the volumetric rate of flow of the wastewater and return sludge.
aeration tank A tank in which wastewater or other liquid is aerated.
aerator A device that brings air and a liquid into intimate contact.
