Table 6 Improved ABR operating conditions.

From: The performance and archaeal community shifts in a modified anaerobic baffled reactor treating sweet potato starch wastewater at ambient temperatures

Stage

Stage I

Stage II

Stage III

Stage IV

Days

1–76

77–139

140–205

206–303

Temperature (°C)

22.1 ± 0.5

29.8 ± 0.1

20.6 ± 0.4

9.7 ± 0.3

pH

7.5

7.5

7.5

7.5

HRT (d)

2

0.6

0.6

1.2

COD (mg/L)

5253 ± 1947

7394 ± 274

6785 ± 571

5961 ± 286

OLR (kg COD/(m3d))

1.90 ± 1.66

11.89 ± 2.89

8.60 ± 1.80

3.57 ± 0.67

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