Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
A CBOD test is set up with a dilution factor of 40. The DO of the sample brought from the field was 0.5 mg/L; while the DO of the dilution water was 8.2 mg/L. (The sample does not require special dilution water with nutrients). The BOD bottle is incubated in the dark at 20°C. The DOs (after five days of incubation) is measured as 4 mg/L and the DO30 (after 30 days of incubation) = 2.0 mg/L Determine the ultimate CBOD and the deoxygenation rate constant (k20) for the original sample brought from the field. (Assumption: in domestic wastewaters, beyond 25 days of incubation, the DO demand in a BOD bottle is considered complete and no more DO demand is exerted in the bottle).

A CBOD test is set up with a dilution factor of 40. The DO of the sample brought from the field was 0.5 mg/L; while the DO of the dilution water was 8.2 mg/L. (The sample does not require special dilution water with nutrients). The BOD bottle is incubated in the dark at 20°C. The DOs (after five days of incubation) is measured as 4 mg/L and the DO30 (after 30 days of incubation) = 2.0 mg/L Determine the ultimate CBOD and the deoxygenation rate constant (k20) for the original sample brought from the field. (Assumption: in domestic wastewaters, beyond 25 days of incubation, the DO demand in a BOD bottle is considered complete and no more DO demand is exerted in the bottle).

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
See similar textbooks
icon
Related questions
Question

Show all steps please

A CBOD test is set up with a dilution factor of 40. The DO of the sample brought from the field was 0.5 mg/L; while the DO of the dilution water was 8.2 mg/L. (The sample does not require special dilution water with nutrients). The BOD bottle is incubated in the dark at 20°C. The DOs (after five days of incubation) is measured as 4 mg/L and the DO30 (after 30 days of incubation) = 2.0 mg/L Determine the ultimate CBOD and the deoxygenation rate constant (k20) for the original sample brought from the field. (Assumption: in domestic wastewaters, beyond 25 days of incubation, the DO demand in a BOD bottle is considered complete and no more DO demand is exerted in the bottle).
Transcribed Image Text:A CBOD test is set up with a dilution factor of 40. The DO of the sample brought from the field was 0.5 mg/L; while the DO of the dilution water was 8.2 mg/L. (The sample does not require special dilution water with nutrients). The BOD bottle is incubated in the dark at 20°C. The DOs (after five days of incubation) is measured as 4 mg/L and the DO30 (after 30 days of incubation) = 2.0 mg/L Determine the ultimate CBOD and the deoxygenation rate constant (k20) for the original sample brought from the field. (Assumption: in domestic wastewaters, beyond 25 days of incubation, the DO demand in a BOD bottle is considered complete and no more DO demand is exerted in the bottle).
Expert Solution
steps

Step by step

Solved in 3 steps with 14 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS