What is a Membrane Bioreactor (MBR)? A membrane bioreactor (MBR) is a system that combines membrane processes. The activated sludge process, a biological wastewater treatment method, is used in conjunction with the ultra filtration (UF) or microfiltration (MF) processes. An MBR system is made up of 10–11 subsystems, as well as a membrane zone and fine monitoring factors that contribute. The membranes' primary function is to extract organic matter from water. Typically, clarifiers and filters found in activated sludge facilities are used to accomplish this. The membrane zone is the first step in weakening contaminants. Following that, the contaminants are filtered through a series of membrane elements. Membrane bioreactors (MBR) are well-established systems used for the treatment of municipal and industrial wastewater. • It generates high-quality effluent. • Small footprint • Refurbishment of old wastewater treatment plants • Improved Bio-Treatment • The cost of removing sludge is low. • There's no sand filtration. • Simple to use Because of the advanced and innovative technology it employs, as well as the drastically reduced cost of membrane, MBR is now regarded as one of India's most important sewage treatment plants