A lake with 100 x 107 m² of surface area is fed by a stream having 45 m³/s offlow with 2.3 mg/L phosphorus. Phosphorus is also entering the lake through anindustrial wastewater treatment plant discharges at 1.4 m³/s containing 235 mg/Lphosphorus. 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 ofphosphorus removal at the treatment plant would be required to keep theaverage phosphorus concentration in the lake below 0.30 mg/L?

Given that- Surface area of lake, As=100 x 107 m2 Stream flow rate, Q1=45 m3/s Phosphorous flow,…

Answered: A lake with 100 x 107 m² of surface…

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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Given the problem and formulas used. Please give a detailed solution and explanation how it was solved.
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A brine solution of salt flows at a constant rate of 4 L/min into a large tank that initially contains 100 L of pure water. The solution in the tank is kept well stirred and flows out of a drain at the bottom of the tank at a constant rate of 2 L/min. If the concentration of salt in the brine entering the tank is 0.6 kg/L, determine the mass of salt in the tank after t min. When will the concentration of the salt in the tank reach 0.4 kg/L?
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