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A lake with 100 x 107 m² of surface area is fed by a stream having 45 m³/s of flow with 2.3 mg/L phosphorus. Phosphorus is also entering the lake through an industrial wastewater treatment plant discharges at 1.4 m³/s containing 235 mg/L phosphorus. If the lake is well mixed and the phosphorus settling rate is 13 m/yr, estimate the steady-state phosphorus concentration in the lake. What level of phosphorus removal at the treatment plant would be required to keep the average phosphorus concentration in the lake below 0.30 mg/L?

A lake with 100 x 107 m² of surface area is fed by a stream having 45 m³/s of flow with 2.3 mg/L phosphorus. Phosphorus is also entering the lake through an industrial wastewater treatment plant discharges at 1.4 m³/s containing 235 mg/L phosphorus. If the lake is well mixed and the phosphorus settling rate is 13 m/yr, estimate the steady-state phosphorus concentration in the lake. What level of phosphorus removal at the treatment plant would be required to keep the average phosphorus concentration in the lake below 0.30 mg/L?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A lake with 100 x 107 m² of surface area is fed by a stream having 45 m³/s of flow with 2.3 mg/L phosphorus. Phosphorus is also entering the lake through an industrial wastewater treatment plant discharges at 1.4 m³/s containing 235 mg/L phosphorus. If the lake is well mixed and the phosphorus settling rate is 13 m/yr, estimate the steady-state phosphorus concentration in the lake. What level of phosphorus removal at the treatment plant would be required to keep the average phosphorus concentration in the lake below 0.30 mg/L?
Transcribed Image Text:A lake with 100 x 107 m² of surface area is fed by a stream having 45 m³/s of flow with 2.3 mg/L phosphorus. Phosphorus is also entering the lake through an industrial wastewater treatment plant discharges at 1.4 m³/s containing 235 mg/L phosphorus. If the lake is well mixed and the phosphorus settling rate is 13 m/yr, estimate the steady-state phosphorus concentration in the lake. What level of phosphorus removal at the treatment plant would be required to keep the average phosphorus concentration in the lake below 0.30 mg/L?
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