Membrane Bio Reactor is used as integral part of waste water treatment procedure to conduct ultrafiltration or microfiltration technology. Membrane of this system is used as tertiary treatment method to avoid active biomass during filtration. Membrane Bio Reactor is known for its emission free operation. Its loading capacity is high and operating cost is low. Standard of this system has been tested on the basis of its working life, performance, user friendliness, dimension, longevity and design precision. This bio reactor has low installation charge.