Aeration is used extensively for the biological (biochemical?) oxidation of the two domestic and industrial organic and natural wastes. In wastewater treatment, the function of aeration should be to introduce air in the water as a result of the simplest and least expensive approaches which will improve oxygen transfer (dissolved https://disc-air-diffuser57913.eedblog.com/28889994/new-step-by-step-map-for-automatic-and-valveless-gravity-sand-filter