the 40 ft3/s sewage outflow from the city's sewer system. Natural BOD is 3.5 mg/L, and the river's DO level is 7 mg/L at this time of year. This time of year, the DO saturation level is 8.5 mg / L, given the water temperature. How can we know that garbage will be mixed with oxygen in the river, given that deoxygenation is at 0.59 day-1 and reoxygenation at 0.70 day-1? calculate Do and Lo right downstream of the outflow. c. determine the time and distance at which DO is at its lowest; d. determine the lowest DO possible; and e.
the 40 ft3/s sewage outflow from the city's sewer system. Natural BOD is 3.5 mg/L, and the river's DO level is 7 mg/L at this time of year. This time of year, the DO saturation level is 8.5 mg / L, given the water temperature. How can we know that garbage will be mixed with oxygen in the river, given that deoxygenation is at 0.59 day-1 and reoxygenation at 0.70 day-1? calculate Do and Lo right downstream of the outflow. c. determine the time and distance at which DO is at its lowest; d. determine the lowest DO possible; and e.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Small river with a flow rate of 280 ft3 /s and 1.1 ft/s velocity is the source of the 40 ft3/s sewage outflow from the city's sewer system.
Natural BOD is 3.5 mg/L, and the river's DO level is 7 mg/L at this time of year. This time of year, the DO saturation level is 8.5 mg / L, given the water temperature. How can we know that garbage will be mixed with oxygen in the river, given that deoxygenation is at 0.59 day-1 and reoxygenation at 0.70 day-1?
calculate Do and Lo right downstream of the outflow.
c. determine the time and distance at which DO is at its lowest; d. determine the lowest DO possible; and e.
10. Miles downstream is where you'll find the DO.
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