A pilot-scale study was conducted to determine the reaction-rate coefficient for cross-flow media treating a settled municipal wastewater. The tower was 1.2 m by 1.2 m square with a 6.0-m depth of media, which had a specific surface area equal to 98 m2/nr\ From the following data, plot a graph as shown in Figure 12.27 and determine k20 Assume n = 0.5 and θ = 1.035.
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| Influent | Effluent | ||
Q(l/m2•s) | T (°C) | BOD (mg/l) | So (mg/l) | BOD (mg/l) | Se (mg/l) |
1.03 | 18 | 92 | 54 | 25 | 14 |
0.64 | 23 | 90 | 52 | 18 | 10 |
0.47 | 21 | 104 | 54 | 17 | 9 |
1.06 | 19 | 72 | 48 | 23 | 12 |
0.97 | 24 | 77 | 43 | 20 | 10 |
0.70 | 20 | 85 | 45 | 17 | 11 |
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