Engineering, 24.03.2021 19:00, Decaide

The following data are from the Ohio River in the vicinity of Cincinnati (mile 470) during low flow, September 1967. A. If the mean velocity of the river is 0.3 m s 1, calibrate the Streeter-Phelps model using the field data, and solve for the rate constant ka and kd. The saturation concentration for dissolved oxygen at the time of the survey was 8.3 mg/I, and the main wastewater discharge was at mile point 472. Distance(miles 460 465 470 472 475 480 490 500 510 520 540 560 580
BOD, mall 4 4 4 12 11 9.3 7.5 6 5.3 4.5 4 3 2.5
D. O., ma/l 7.5 7.8 6.7 5.3 3.8 3.2 2.8 2.8 3.1 4.1 5.3 9.3 7.5 6 5.3 4.5 4 2.5
B. waste load allocation. If the flow of the river was 5000 cfs, estimate the wastewater discharge in kg BOD d-1. How much waste is allowed (in kg BOD d-1)if the D. O. Concentration must be greater than 5.0 mg/1?

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The following data are from the Ohio River in the vicinity of Cincinnati (mile 470) during low flow,...