Landfill Leachate Toxicity Removal in Combined Treatment with Municipal Wastewater
Table 2
Operational parameters of activated sludge systems I, II, and III.
Parameter
Unit
System
Range
Median
Sludge loading rate
g COD/ g MLSS·d
I: 1%
0.08–0.13
0.10
I: 10%
0.11–0.15
0.11
II: 1%
0.07–0.236
0.10
II: 10%
0.08–0.23
0.17
III
0.06–0.175
0.06
MLSS
g/L
I
II
1.6–2.5
2.0
III
Q
L/d
I
II
8.5–10.0
9.7
III
HRT
d
I
1.4
II
1.4–1.6
1.5
III
1.5
SD: standard deviation; number of measurements ; time-dependent variation caused by unstable composition of influent. COD: chemical oxygen demand. MLSS: activated sludge concentration. Q: wastewater flow. HRT: hydraulic retention time.