A Low Cost Open Tank Pure Oxygen System
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TABLE 2
Pure Oxygen Pilot Plant VS Metro Denver Operations Parameter
Parameter
Metro Denver Plant
Pure Oxygen System
1) Gas requirements (0 2 /air)
800-1200
30-50
cubic feet/#BOD removed
2)
3)
4)
Excess waste activated
sludge production
#WAS/#BOD removed
Detention times (Aerator)
a) Primary effluent
b) P.E. + Return flow (Hrs)
BOD Loading rates
a) F/M Ratio (#BOD/#VSS)
b) Vol. Ratio (#BOD/1000cf)
0 . 5 - 0 . 8
3.8
2.6
0.2 - 0.35
5 5 - 7 5
0 - 0 . 3
0.9
0.45
0 . 7 - 1.3
1 8 0 - 2 8 0
5) Percentage Rem. Eff. (Sec. only)
a) % BOD removed
75 - 85
85 - 95
b) % COD removed
60 - 70
75 - 85
c) % S.S. removed
60 - 70
75 - 85
6)
Diffuser Efficiencies
a) % 0 2 Utilization
0 2 consumed
0 2 supplied
b)#0 2 /HPHour
7)
Sludge age (Days)
3.0
1.2
8)
Dissolved Oxygen (mg/1)
a) Mixed liquor
0.1 - 2.0
8.0 - 12.0
b) Final Effluent
0 - 1.0
0.2 - 0.8
9)
Oxygen uptake rates
(mixed liquor)
mg/10 2 /Hr.
25
70
6 - 8
1.5
8 8 - 9 8
10.0