plantswas investigated at laboratory scale using Moving Bed Biofilm Reactor (MBBR)
process. For this purpose, an aerobic pilot was operated for nearly one year in different
conditions, in which a moving bed carrier with aspecific biofilm surface area of 500 m2/m3
and a filling rate of 60% was utilized. System efficiency in removal of BOD5 and COD was
examined at different hydraulic retention times (HRTs) of 1, 1.5, 2, 2.5, 3 and 4 h. The …