ASBR has granular biomass
while ASBBR was filled with biomass immobilized on polyurethane
foams. Start-up time was shorter inASBRand ithad superior reactor
stability and organic matter removal compared to ASBBR. At cycle
time of 1 d, ASBR provided over 92% COD removal while the highest
removal efficiency in ASBBR was 77% with the average value
of 50%.