A municipal wastewater containing both domestic and food-processing wastewaters was tested to determine the kinetic constants using a laboratory apparatus similar to the bench-scale unit shown in Figure 12.42. The volume of the aeration chamber was 10 1, and the wastewater feed was established at a constant rate of 30.0 1/d to provide an 8.0-hr aeration period for all of the test runs. A measured volume of sludge was wasted once a day from the tank. Determine T, k(h /c, and Ks from the following laboratory data using the procedure in Example 12.14:
Q(1/d) | So(mg/l) | QW(1/d) | X(mg/I) | Se(mg/I) | Xe(mg/I) |
30.0 | 150 | 0.31 | 2460 | 2.5 | 7.7 |
30.0 | 150 | 0.53 | 1690 | 3.3 | 6.5 |
30.0 | 150 | 0.98 | 1320 | 4.4 | 5.6 |
30.0 | 150 | 1.27 | 1080 | 5.9 | 5.0 |
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