A 10-hp surface aerator was tested in a tank filled with 9200 ft3 of tap water at 22°C by the non-steady-state procedure. The dissolved-oxygen saturation was assumed to be the standard value of 8.8 mg/l from Table A. 10. Based on the following time and dissolved-oxygen data, determine the value of Kt a corrected to 20°C. Also calculate the oxygen transfer rate in pounds per horsepower-hour.
t (min) | Ct (mg/l) | t(min) | Ct (mg/l) |
0 | 0 | 8.0 | 5.5 |
2.0 | 3.0 | 11.0 | 6.3 |
4.0 | 4.3 | 14.0 | 7.1 |
6.0 | 5.0 | 17.0 | 7.6 |
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