A lagoon with volume 1200 m^3 has been receiving a steady flow of a conservative waste at the rate of 100 m^3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10mg/L. Assuming complete mix conditions, if the concentration suddenly increase to 100mg/L, what would the concentration in the effluent be 7 days later (after the sudden increase of input concentration)?

A lagoon with volume 1200 m^3 has been receiving a steady flow of a conservative waste at the rate of 100 m^3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10mg/L. Assuming complete mix conditions, if the concentration suddenly increase to 100mg/L, what would the concentration in the effluent be 7 days later (after the sudden increase of input concentration)?

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter2: Municipal Solid Waste Characteristics And Quantities

Section: Chapter Questions

Problem 2.14P

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A lagoon with a volume of 1500 ^3 has been receiving a steady flow of a conservative waste at the rate of 100 m^3/day for a long period of time, so assume steady state conditions apply. The waste entering the lagoon has a concentration of 10 mg/L. Assuming complete mix conditions, what would be the concentration of pollutant in the effluent leaving the lagoon? If the input suddenly increases to 100 mg/L due to pollution control failure, what would be the concentration in the effluent from the lagoon 7 days later?
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