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SAMPLE PROBLEM 1 1. A water treatment plant settling tank has an overflow rate of 600gal/d.ft² & a depth of 6 ft. What is the residence time?

SAMPLE PROBLEM 1 1. A water treatment plant settling tank has an overflow rate of 600gal/d.ft² & a depth of 6 ft. What is the residence time?

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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SAMPLE PROBLEM 1 1. A water treatment plant settling tank has an overflow rate of 600gal/d.ft? & a depth of 6 ft. What is the residence time? Given: Now we convert days to seconds ft s. ft? 6 ft 600 gal/d.ft²" Familiar? It's the units from the first formula of critical settling velocity but in their English equivalents. Rearranging the formula of critical settling velocity, H Req'd: t Vo A t Sol'n: H t = t = A Both of those parameters are not given so we need to find another way. Let's examine the unit of the overflow rate: 6 ft gal 1ft3 600 d. ft (7.481 gal) galloon day.ft? t = 0.0748 days Galloon is a unit of volume which means Or we can convert it in hours for it can be easily converted to ftº. Now it convenience becomes t = 1.7955 hrs ft day.ft 1. Redo Sample Problem 1. This time your overflow rate is 600gal/d.m².
Transcribed Image Text:SAMPLE PROBLEM 1 1. A water treatment plant settling tank has an overflow rate of 600gal/d.ft? & a depth of 6 ft. What is the residence time? Given: Now we convert days to seconds ft s. ft? 6 ft 600 gal/d.ft²" Familiar? It's the units from the first formula of critical settling velocity but in their English equivalents. Rearranging the formula of critical settling velocity, H Req'd: t Vo A t Sol'n: H t = t = A Both of those parameters are not given so we need to find another way. Let's examine the unit of the overflow rate: 6 ft gal 1ft3 600 d. ft (7.481 gal) galloon day.ft? t = 0.0748 days Galloon is a unit of volume which means Or we can convert it in hours for it can be easily converted to ftº. Now it convenience becomes t = 1.7955 hrs ft day.ft 1. Redo Sample Problem 1. This time your overflow rate is 600gal/d.m².
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