Aerobic treatment is a wastewater treatment process that uses oxygen to break down organic matter. This method relies on microorganisms, such as bacteria, that thrive in oxygen-rich environments. These microorganisms consume the organic pollutants, converting them into carbon dioxide, water, and biomass, which can be further processed or removed. This treatment is commonly used in systems like septic tanks and aerobic treatment units (ATUs). Aerobic treatment is effective for reducing harmful substances in wastewater, making it safer for discharge into the environment or for reuse in irrigation and other applications.