Integrated self-forming dynamic membrane (SFDM) and membrane-aerated biofilm reactor (MABR) system enhanced single-stage autotrophic nitrogen removal

Monitoring biofilm thickness using the membrane aerated biofilm reactor (MABR) fingerprint soft sensor to optimize nitrogen removal

“…The unique advantages of counter‐current diffusion occurring within MABR biofilms result in increased interest in various MABR configurations for nitrogen removal, for example, the hybrid mode with suspended microbial growth (Carlson et al, 2021; Downing & Nerenberg, 2008; Landes et al, 2011); MABRs combined with other downstream biological processes (Ahmar Siddiqui et al, 2022; Wu et al, 2017); and MABRs designed for multiple bioprocesses within the biofilm (Lu et al, 2022; Siriweera et al, 2023). Installation of commercialized MABR cassettes into existing activated sludge bioreactors to extend process capacity for wastewater treatment plants (WWTPs) around the globe to deal with more stringent discharge restrictions represents one such emerging application (Heffernan et al, 2017; Uri‐Carreño et al, 2023).…”

Bioconversion of waste-to-resources (BWR-2021): Valorization of industrial and agro-wastes to fuel, feed, fertilizer, and biobased products

“…In another study, Siddiqui et al (2021) assessed the integration of self-forming dynamic membrane (SFDM) filtration module and membrane-aerated biofilm reactor (MABR) for autotrophic nitrogen removal. Compared to the MABR reactor without SFDM, the reactor with SFDM resulted in the better reactor performance in terms of total nitrogen removal (more than 80%) and effluent suspended solids (less than 1 mg/L).…”

Partial nitrification/ANAMMOX (PN/A) membrane aerated biofilm reactor (MABR) under a low C/N ratio and metagenomics identification

“…The MABR has attracted more and more attention because it has many advantages, such as accurate aeration, simple operation, and lower costs. 1,2 Air is pumped into gas permeable membranes and the oxygen flux can be adjusted accurately by means of the flow rate and lumen pressure. 3 Microorganisms efficiently obtain oxygen and space by membranes, forming aerobic, anoxic, and anaerobic microenvironments according to the DO concentration gradient from the substratum to the biofilm surface.…”