Extended Aeration Activated Sludge (EAAS) technology is an advanced wastewater treatment process designed to efficiently and sustainably treat municipal and industrial wastewater. In the EAAS system, wastewater is mixed with activated sludge in an aeration tank and subjected to an extended aeration process, allowing microorganisms to effectively break down organic pollutants and remove nutrients like nitrogen and phosphorus. The extended aeration period, characterized by prolonged contact time and minimal sludge production, promotes the development of a stable and well-settled biomass. The treated effluent undergoes final clarification and disinfection before discharge. EAAS technology is known for its energy efficiency, minimal chemical usage, and reliable removal of contaminants, making it a popular choice for small to medium-sized wastewater treatment plants aiming to meet stringent effluent quality standards and environmental regulations.