Table 4 Designed operating parameters of pilot equipment.
Parameter | Unit | Value range |
|---|---|---|
Influent pressure | bar | 2.5 ~ 5.5 |
Frequency of hydraulic cleaning | – | once per 1-h |
Intensity of hydraulic cleaning | – | Forward Flush: 4 m3/h, Backwash: 20 LMH (5 bar), Air Scouring: 7.5 Nm3/h |
Duration of hydraulic cleaning | min | 1 |
Frequency of chemically enhanced backwash (CEB) | – | once per 48-h |
Dosage of CEB agents | mg/L | NaClO:200, NaOH:250, Citric Acid:4000 |
Duration of CEB with alkaline agents | min | 20 (2.5 for dosing, 15 for soaking with recirculation, 2.5 for rinsing) |
Duration of CEB with acid agent | min | 20 (2.5 for dosing, 15 for soaking with recirculation, 2.5 for rinsing) |
Frequency of cleaning in place (CIP) | – | 0 |
