A truck carrying road salt crashed, spilling the salt near a spring where it entered an aquifer. The breakthrough curve below shows sodium concentration at an observation well drilled 35 m downgradient from the spill site. 700 Breakthrough Curve at 35 m Solute Concentration (mg/L) 200 300 600 ggg 400 500 100 0 0 10 20 30 40 50 Time (d) а. b. Based on the breakthrough curve, determine the average velocity, the standard deviation in time (a), and the dispersion coefficient (DL) of sodium in this aquifer. A drinking water supply well is located 1,000 m downgradient of the spill site. There is no MCL for sodium in drinking water, but health guidelines recommend that concentrations be kept to less than 20 mg/L. How long before this 20 mg/L limit is exceeded at the drinking water supply well?
A truck carrying road salt crashed, spilling the salt near a spring where it entered an aquifer. The breakthrough curve below shows sodium concentration at an observation well drilled 35 m downgradient from the spill site. 700 Breakthrough Curve at 35 m Solute Concentration (mg/L) 200 300 600 ggg 400 500 100 0 0 10 20 30 40 50 Time (d) а. b. Based on the breakthrough curve, determine the average velocity, the standard deviation in time (a), and the dispersion coefficient (DL) of sodium in this aquifer. A drinking water supply well is located 1,000 m downgradient of the spill site. There is no MCL for sodium in drinking water, but health guidelines recommend that concentrations be kept to less than 20 mg/L. How long before this 20 mg/L limit is exceeded at the drinking water supply well?
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
Related questions
Question
4H
Transcribed Image Text:4. A truck carrying road salt crashed, spilling the salt near a spring where it entered an aquifer.
The breakthrough curve below shows sodi um concentration at an observation well drilled 35
m downgradient from the spill site.
Breakthrough Curve at 35 m
a.
Solute Concentration (mg/L)
700
600
500
400
300
200
100
0
0
10
20
Time (d)
30
40
50
Based on the breakthrough curve, determine the average velocity, the
standard deviation in time (a), and the dispersion coefficient (DL) of sodium in this
aquifer.
b.
A drinking water supply well is located 1,000 m downgradient of the spill
site. There is no MCL for sodium in drinking water, but health guidelines recommend
that concentrations be kept to less than 20 mg/L. How long before this 20 mg/L limit
is exceeded at the drinking water supply well?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 15 images
Recommended textbooks for you
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…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
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…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The