Page 449 - Industrial Wastewater Treatment, Recycling and Reuse
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420 Industrial Wastewater Treatment, Recycling, and Reuse
600
Feed COD
500
COD (mg/L) 400
300
200
100
0
0 6 12 18 24 30
Time (hours)
Figure 10.9 Typical reduction in COD concentration of feed solution in feed tank.
1.40 16.0
Organic loading rate (kg COD/m 3 /day) 1.00 10.0 Hydraulic residence time (hours)
14.0
1.20
12.0
0.80
8.0
0.60
6.0
0.40
4.0
0.20
0.00 2.0
0.0
1 815222936435057 64 71 78 85 92 99 106 113 120
Days of operation
Organic loading rate Hydraulic residence time
Figure 10.10 OLR and corresponding HRT in the bioreactor.
An average COD concentration of feed solution was maintained at
385 mg/L, and the same was considered for determination of OLR in
the bioreactor. Figure 10.10 shows the stepwise increase in OLR and cor-
responding HRT for the feed.
