Question 1 A reactive chemical disposed of by dilution in a river dissipates at a uniform rate of 0.15 mg/l per hour. The waste discharge is 7 million gallons per day containing 35 mg/l, while the stream has zero concentration with a flow above the sewer outfall of 102 ft/s. If the mean velocity in the river is 0.8 ft/s, calculate the distance downstream that the chemical residual persists.

Question 1 A reactive chemical disposed of by dilution in a river dissipates at a uniform rate of 0.15 mg/l per hour. The waste discharge is 7 million gallons per day containing 35 mg/l, while the stream has zero concentration with a flow above the sewer outfall of 102 ft/s. If the mean velocity in the river is 0.8 ft/s, calculate the distance downstream that the chemical residual persists.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter8: Landfills

Section: Chapter Questions

Problem 8.5P

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A reactive chemical disposed of by dilution in a river dissipates at a uniform rate of 0.15 mg/lper hour. The waste discharge is 7 million gallons per day containing 35 mg/l, while thestream has zero concentration with a flow above the sewer outfall of 102 ft3/s. If the meanvelocity in the river is 0.8 ft/s, calculate the distance downstream that the chemical residual persist.
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