A 5-mL sample of sewage is diluted to 300 mL in a standard BOD bottle. The initial DO in the bottle is 9.2 mg/L, and after 5 d of incubation the DO is found to be 4.7 mg/L. Determine the 5-d and ultimate BOD values for the sewage, assuming that the reaction rate constant is 0.14/d.
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