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TableĀ 2 Comparison of UASB and EGSB reactors treating different substrates

From: Treatment of high-strength ethylene glycol waste water in an expanded granular sludge blanket reactor: use of PVA-gel beads as a biocarrier

Parameter CSL EG
UASB EGSB UASB EGSB
Mix condition Bad Good Bad Good
Influent COD (mg/L) 9100 12,900 1500 3283
HRT (h) 8 6 8 6
OLR (kg/m3/day) 22.5 27 11 16
COD removal efficiency (%) 90 92 95 97
Biomass attached (g MLSS/g PVA-gel) 0.93 1.02 0.25 0.83
Specific bacteria Methanosarcina Methanosaeta Methanosarcina Methanosaeta