3.2.2. Effect of SRT
In general, the confidence tests of total COD removal rates did
not show significant differences under different operating
SRTs due to the high quality of permeates produced by the MF
membranes. On the other hand, at the same HRT, MLSS or
MLVSS concentration increased with prolonged SRT e R30 had
the lowest biomass concentration followed by R60 and RN in
ascending order.