Table 2.

Operational parameters tested in laboratory batch tests.

Parameter	Temperature [°C]	pH-value [−]	COD:N ratio [−]
Batch tests of temperature	8–45	7.5–7.8	≤ 1.5
Batch tests of pH-value	20–30	4–10.5	≤ 1.5
Batch tests of COD:N ratio	20–30	7.5–7.8	1.5–6