Membrane Aerated Biofilm Reactors (MABR)

Activated sludge treatment has long been used for aerobic wastewater treatment, but its aeration stage is particularly energy-intensive, which makes it less cost-efficient as a step in decentralized water reuse.

At Fluence, our self-respiring membrane aerated biofilm reactors(MABR) provide an energy-efficient alternative. MABR is based on passive aeration, that is, the diffusion of oxygen through membranes.

During the process, an aerobic nitrifying biofilm develops on the surface of the membranes, which enables simultaneous nitrification and denitrification (SND). This minimizes carbon deficiency and results in low total nitrogen in the effluent.

MABR plants offer:

A reduction of up to 90% in energy use for aeration
Simultaneous nitrification and denitrification
Low odor and noise for neighborhood-friendly operation
High-quality water suitable for discharge or use in irrigation
Simple, low-maintenance operation
Low operating costs