A membrane bioreactor (MBR) is a combination of membrane filtration techniques such as microfiltration and ultrafiltration and suspended growth ...A membrane bioreactor (MBR) is a combination of membrane filtration techniques such as microfiltration and ultrafiltration and suspended growth bioreactor. Membrane bioreactors are used widely in large-sized wastewater treatment plants. MBR systems consist of microfiltration or ultrafiltration membranes such as hollow fiber, flat sheet, and multi-tubular in various configurations. MBR membranes are designed with different polymeric materials such as PVDF, PE, PES, and others. Membranes are selected on the basis of application requirements and membrane characteristics such as pore size (MF/UF), air scours requirements, hydraulic configurations, and membrane tank volume. The use of MBRs for wastewater treatment produces good quality effluents meeting the water quality requirements.
MBR is a sophisticated technology that requires a skilled workforce for the maintenance of mechanical components and their operations. MBR is an advanced technology owing to which a limited workforce is available to meet the required technical expertise. Rising demand for high-quality effluent owing to the stringent regulations implemented by various countries on discharge standards is increasing the demand for MBR system. MBR offers superior quality and consistency of the produced effluents by eliminating biological wastes and bacteria, such as E. coli, which are measured to be less than 3 mm. Standards. MBR overcomes the problems associated with poor sludge setting in the activated sludge process, and MBR adoption is increasing globally owing to its efficient performance in compliance with regulations.