1. A two-pond system is fed by a stream with flow rate 4 m3/d and BOD concentration 50.0 mg/L, as shown in Figure Q1. The rate of decay of BOD is 0.3/day. The volume of the first pond is 20 m3 and the second is 12 m3. What is the effluent concentration of pond 2? 1 Figure Q1 2

Introduction to Chemical Engineering Thermodynamics
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Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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A two-pond system is fed by a stream with flow rate 4 m^3/d and BOD concentration 50.0 mg/L, as shown in Figure Q1. The rate of decay of BOD is 0.3/day. The volume of the first pond is 20 m^3 and the second is 12 m^3. What is the effluent concentration of pond 2?

1. A two-pond system is fed by a stream with flow rate 4 m3/d and BOD concentration 50.0 mg/L,
as shown in Figure Q1. The rate of decay of BOD is 0.3/day. The volume of the first pond is 20 m3
and the second is 12 m3. What is the effluent concentration of pond 2?
1
Figure Q1
2
Transcribed Image Text:1. A two-pond system is fed by a stream with flow rate 4 m3/d and BOD concentration 50.0 mg/L, as shown in Figure Q1. The rate of decay of BOD is 0.3/day. The volume of the first pond is 20 m3 and the second is 12 m3. What is the effluent concentration of pond 2? 1 Figure Q1 2
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