Bioreactor acts as a biological treatment processor and the membrane is used as a filter in the filtration process. Despite its reputation
of being a reliable treatment process, the interest in MBR has slowed
down for the past three decades mainly due to the high cost of membrane and membrane maintenance. The cost of the membrane has inclined together with the growth of membrane technology and the
MBR technology is becoming more acceptable for industrial applications. In 1990s, submerged MBR was commercialized and it was
found that this system had low operational cost