Question

You have collected water samples of the influent (raw sewage) and effluent (treated sewage) at Houston Wastewater Treatment Plant. You plan to conduct the BOD5 test to determine the BOD rate constant, k.

A. Would you expect the rate constants to be the same or different in these two samples? If different, which would be higher and why?

B. If the BOD5 for the raw sewage sample is 600 mg/L, and the ultimate BOD is 650 mg/L at 20oC, find the BOD rate constant k for the raw sewage sample.

C. In the lab, you conducted the BOD5 tests. When you reported your results to your adviser, you were asked if the BOD5 experiment was run in the dark. Is it a relevant question? Why or why not? 




D. What would the BOD5 of this wastewater be at 30 oC in Houston summer?

Answer 1

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