The modern industrial and municipal world has one of the most important issues related to wastewater management. Due to the increase, or rather the rise in population growth, urbanization, and industrial activities, an enhanced need for new and efficient wastewater treatment technologies is emerging. The Membrane Bioreactor for wastewater treatment has been identified as stable, sustainable, and very efficient among these options. Using traditional biological treatment, MBR systems are able to achieve a high-quality effluent level, in a very small package, and with improved process flexibility. These systems have changed the way industries and municipalities recycle and reuse water, making use of resources and lowering their ecological footprint.