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Table 1 Summary of conditions used during operation of the EGSB reactor treating EG

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

Phase Time (days) OLR (kg/m3/day) Recycle rate (L/h) CODin (mg/L) pHin Trace nutrients (ml/L) NaHCO3 (mg/L)
1 0–14 2.1 ± 0.1 25 523 ± 35 7.56 ± 0.28 7.50 200
2 15–23 4.5 ± 0.1 25 1121 ± 36 7.51 ± 0.24 7.50 400
3 24–35 9.8 ± 0.3 25 2453 ± 64 8.11 ± 0.25 7.50 880
4 36–37 12.0 ± 0.0 25 3004 ± 0 8.12 ± 0.00 7.50 1200
5 38–50 14.6 ± 0.3 25 3640 ± 87 8.02 ± 0.30 7.50 1400
6 51–58 13.4 ± 0.7 20 3360 ± 183 8.22 ± 0.29 7.50 1400
7 59–75 13.2 ± 2.7 20 3304 ± 686 8.16 ± 0.25 3.75 1400
8 76–98 15.2 ± 0.7 15 3807 ± 176 7.84 ± 0.27 3.75 1000
9 99–109 15.0 ± 1.2 15 3743 ± 289 7.62 ± 0.15 3.75 800
10 110–129 14.0 ± 1.0 15 3497 ± 256 7.79 ± 0.21 3.75 600
11 130–149 14.0 ± 0.2 15 3503 ± 46 7.89 ± 0.23 0 600
12 150–168 13.1 ± 1.0 15 3283 ± 261 7.68 ± 0.17 0 400