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PLEASE PROVIDE COMPREHENSIVE LONG ANSWER AND ANSWER ALL PARTS. A wastewater sample is collected from the influent of a wastewater treatment plant. Technicians place a

image text in transcribed PLEASE PROVIDE COMPREHENSIVE LONG ANSWER AND ANSWER ALL PARTS.

A wastewater sample is collected from the influent of a wastewater treatment plant. Technicians place a volume Vs of 10mL of the sample in a 300mL BOD bottle. Then they fill the bottle with oxygen saturated dilution water of D0=11mg/L. After incubating in the dark at 20C for 5 days, the technicians determined that the BOD5 is 400mg/L and the Df=4mg/L. Did the technicians calculate correctly the BOD5 of the sample? Explain numerically

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