415 . POME) POME - 30 22 40 Settling 30 - 18 Settling 20 Settling 45 Settling 180 O-Thong , 2007 4.4 POME 1.6 Non-settle sludge 0.69 0.54 Arooj , 2007 6.1 2.24 POME 0.52 0.27 0.44 0.23 0.11 0.18