|
Daysa
|
R1
|
R2
|
R3
|
R4
|
R5
|
R6
|
---|
PASS loading rate (gVS l−1 day−1)
|
0–200
|
1.3 ± 0.1
|
1.3 ± 0.1
|
1.3 ± 0.1
|
1.3 ± 0.1
|
1.3 ± 0.1
|
1.3 ± 0.1
|
201–255
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
Oleate loading rate (g l−1 day−1)
|
0–84
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
85–91
|
0.0
|
0.08
|
0.08
|
0.0
|
0.08
|
0.08
|
92–112
|
0.0
|
0.13
|
0.13
|
0.0
|
0.13
|
0.13
|
113–130
|
0.0
|
0.25
|
0.25
|
0.0
|
0.25
|
0.25
|
131–151
|
0.0
|
0.5
|
0.5
|
0.0
|
0.5
|
0.5
|
152–171
|
0.0
|
1.0
|
1.0
|
0.0
|
1.0
|
1.0
|
Pulse feedingb →
|
172–200
|
0.0
|
1.0
|
1.0
|
0.0
|
1.0
|
1.0
|
|
201–255
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
Effluent solids recirculation rate (gTS l−1 day−1)
|
0–84
|
0.0
|
0.0
|
0.0
|
0.6 ± 0.0
|
0.5 ± 0.1
|
0.6 ± 0.1
|
85–171
|
0.0
|
0.0
|
0.0
|
0.8 ± 0.2
|
0.8 ± 0.1
|
0.9 ± 0.2
|
172–200
|
0.0
|
0.0
|
0.0
|
1.1 ± 0.1
|
1.2 ± 0.1
|
1.3 ± 0.1
|
201–255
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
Sulfide addition (mmol l−1 day−1)
|
0–200
|
0.0
|
0.0
|
20
|
0.0
|
0.0
|
20
|
201–255
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
- aDay 0–84: start-up phase; day 85: start of oleate addition to R2, R3, R5, and R6; day 172: start of oleate pulse feeding; day 201: end of PASS and oleate feeding
- bAddition of 2.0 g l−1 of oleate every second day is referred to as pulse feeding