Derive the appropriate reactor equation and determine the pollutant concentration at the exit of the lagoon. If the provincial limit for release into waterways is 90 mg/L, does the effluent meet the limit?
Derive the appropriate reactor equation and determine the pollutant concentration at the exit of the lagoon. If the provincial limit for release into waterways is 90 mg/L, does the effluent meet the limit?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A completely mixed treatment lagoon of 2500 m3 is designed to accommodate an
input flow of 35 L/s of a nonconservative pollutant with a concentration of 157 mg/L and a rate
constant of 0.68 d-1.
a) Derive the appropriate reactor equation and determine the pollutant concentration at
the exit of the lagoon. If the provincial limit for release into waterways is 90 mg/L, does
the effluent meet the limit?
b) If the limit is not met, what would you suggest changing and/or implementing? Provide
two options.
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