Overview
I'm working on a engineering question and need an explanation and answer to help me learn.
A municipal wastewater treatment plant is processing a waste flow with a 5-day BOD of 200 mg/L at 20°C. If the BOD rate constant k1 (base e) at 20°C is 0.23 day–1, the ultimate BOD (mg/L) of the raw wastewater at 20°C is most nearly: