Before revision: The biological oxygen demand (BOD) and dissolved oxygen (DO) curves in a river reaching equilibrium over 175 seconds after a continuous input of high BOD influent is added into the river at x = 15 m and t = 0 s. Critical oxygen deficit On the DO sag curve a minimum concentration occurs at some point, along a stream.
After revision: The biological oxygen demand (BOD) and dissolved oxygen (DO) curves in a river flowing right reaching equilibrium after a continuous input of high BOD influent is added into the river at x = 15 m and t = 0 s. Critical oxygen deficit On the DO sag curve a minimum concentration occurs at some point, along a stream.