Membrane Bioreactor (MBR) Technology
Advanced Biological Treatment with Membrane Separation for Water Reuse
The Membrane Bioreactor (MBR) System combines conventional biological wastewater treatment with membrane filtration to provide high-quality treated water in a compact and efficient configuration.
In an MBR system, microorganisms biologically degrade biodegradable organic pollutants in the bioreactor, while submerged or external membrane modules separate the treated water from activated sludge. The membrane acts as a physical barrier, producing a clear and low-turbidity MBR permeate suitable for reuse or further treatment such as RO.
Wastewater is first subjected to appropriate pre-treatment and biological treatment. Depending on the treatment objective, anoxic and aerobic zones can be incorporated for nitrogen removal.
The biologically treated mixed liquor is then filtered through MBR membranes. Suspended solids and biomass are retained within the bioreactor, while treated water passes through the membrane as permeate.
Advantages of MBR Technology
High-Quality Permeate
The membrane barrier provides effective separation of biomass and suspended solids, producing low-turbidity permeate.
Compact Footprint
Because membrane separation replaces conventional secondary clarification, MBR systems can achieve high treatment capacity within a relatively compact footprint.
Water Reuse Ready
MBR permeate can be suitable for various non-potable reuse applications and provides a suitable feed stream for downstream RO, subject to the required water-quality specifications.
Stable Biological Treatment
The system allows operation at relatively high mixed-liquor concentrations, supporting efficient biological treatment within a compact reactor volume.
Modular & Automated
MBR plants can be supplied as packaged, skid-mounted or civil-tank configurations with automatic membrane cleaning, backwash and process controls.
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