Membrane aerated biofilm reactor

Wastewater technology development will optimize submerged membrane bioreactor processes for biological nutrient removal (BNR) aimed at evaluating the effectiveness of different BNR configurations and examining key process factors affecting N and P removal efficiencies using the ZW-10® MBR pilot consisting of a sequence of anaerobic, anoxic and aerobic zones. The membrane aerated biofilm (MABfR) process is considered one of the most promising technologies because of the extremely high oxygen transfer efficiency (> 80%), large surface area for the biofilm to grow, and minimal membrane fouling. Nevertheless, it is still in its infancy in terms of development.

The objective of the proposed research is to develop and apply this “new generation” of MABfR for simultaneous nitrification/denitrification. Various process control strategies, such as liquid recirculation, oxygen partial pressure adjustment, organic loading optimization, and periodic external water flushing, would be tested to reduce non-uniform biofilm growth.