Most basic rules: Filling ...
Published by Gerd Teunissen, technical director at INTERAGUA, Lda.
Most basic rules:
Filling up to 60% of total volume; BOD removal capacity 4 g BOD/m2 protected area by day. Protected area is usually indicated by supplier, like total surface of filling material 850 m2/m3 of which 640 m2/m3 protected (against scraping off). Don't forget: most MBBR systems are mixed systems with still considerable activated sludge in the reactor.
Aeration efficiency in MBBR is usually higher than in MLSS in same reactor, due to longer contact time between air and water.