Answered: A municipal wastewater treatment plant…

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 municipal wastewater treatment plant has an average flow of 0.5 m³/s, and two aerated grit chambers are to be used in parallel. Dual units are to be provided for flexibility in operation since one could be used, should the other require temporary maintenance. During normal operation, both chambers would be used. Each chamber is to be a rectangular tank with a spiral-roll flow. The peak flow is 2.4 times the average flow. The tank width is 2 times the depth, and the length is 4 times the width.
a)Determine tank width in meters, if the detention time is 3 min.
b)Determine the total airflow in m³/min, if 0.35 m³/min per meter of tank length is to be provided.

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