CE 453 Homework 3 Due: September 19, 2007 1. Do Problem 2-11 in textbook. (Note: calcium, magnesium, and alkalinity are expressed as calcium carbonate). 2. Do Problems 2-18 and 2-25 in textbook. 3. Do Problems 2-30 and 2-34 in textbook. 4. Do Problem
CE 453
HW # 4
Due: Sept. 28, 2016 (Wed. class)
Sept. 29, 2016 (Thurs. class)
1.
2.
3.
4.
5.
6.
7.
Do Problem 3- 35 in textbook.(15 p09nts)
Do Problem 3-37 in textbook. (15 p0ints)
Answer Question 3-47 in textbook. (5 points)
Do Problem 4-2 in textbook.(10
CE 453
HW # 6
Due: Oct. 19 (Wed. class)
Oct. 20 (Thurs. class)
1.
2.
3.
4.
5.
6.
7.
8.
Do Problem 4-17. (20 points)
Do Problem 4-19- part (a) only- (5 points).
Do Problem 4-20. (25 points)
Explain why lakes thermally stratify and why the impounded water i
CE 453
Homework No. 3
Due: Sept. 21, 2016 (Wed. class)
Sept. 22, 2016 (Thursday class)
1 Explain the role and function of heterotrophic bacteria in the aeration tank of a
biological wastewater treatment plant? What are their carbon and energy sources?
(5
CE 453 FALL 2016
Homework No. 1
Due: Sept. 7, 2016 (Wednesday class)
Sept. 8, 2016 (Thursday class)
1. Problem 2-3 in textbook. (5 points)
2. Problem 2-8 in textbook. Also, determine the carbonate hardness (associated with
the bicarbonate ion), noncarbona
CE 453
Study Guide for Quiz 1
Fall 2016
i)
ii)
iii)
Study Chapters 1 , 2 (Sections 2-1, 2-2, 2-3, 2-4, 2-5,& 2-8), and Chapter 3
(Section 3-1)
Study homework assignments 1&2.
Study Powerpoint slides related to items (i) and ( ii), above.
1. What makes wat
CE 453
Study Guide for Midterm 1
Fall 2016
1.
2.
3.
4.
5.
Study Chapters 1, 2, 3, and 4 (pages 73 to 80) in textbook.
Study the Blackboard materials (Chapters 1,2,3 & 4).
Study homework assignments 1, 2, 3, &4.
Study the questions in Study Guide for Quiz
CE 453
HW # 7
Due: Oct. 26, 2016 (Wed. class)
Oct. 27, 2016 (Thurs. class)
1 How are trihalomethanes (THMs) formed in drinking water? Name and formulate 4 major
THMs. What is the total MCL for THMs?(10 points)
2 How would you prevent THMs formation in wat
CE 453
HW # 5
Due date: Oct. 12, 2016 (Wed. class)
Oct. 13, 2016 (Thurs. Class)
1.
2.
3.
4.
5.
6.
7.
Do Problem 4-21 in textbook.
Do Problem 4-27.(part a only)
Do Problem 4-38.
Do Problem 4-43.
Do Problem 4- 48.
Do Problem 4- 49
Do Problem 4-51
CE 453
Study Guide for Midterm 1
Fall 2015
1. Study Chapters 1, 2, 3, and 4 (pages 73 to 80) in textbook.
2. Study homework assignments 1, 2, 3, 4 &5.
3. Study the questions in Study Guide for Quiz
1.
4. Do Problem 2-11 in the textbook. Also determine (in
CE 453
Homework # 6
1. Do Problem 4.15 in textbook.
A= supply reservoir
B= Load center
C= Elevated Storage
Hydraulic head at A= elevation + pressure head at A x 2.31 (ft/psi)= 0 + 80 * 2.31= 185 ft
Hydraulic head at C= elevation + pressure head at C= 40 +
CE 453
HW # 7
1. Do Problem 4-37 in textbook.
For n= 0.013
From figure 4.22 ( Nomograph for Manning formula based on n=0.013) 12 in diameter and 0.006
ft/ft slope the flow rate is 1210 gpm and the velocity is 3.5 ft/s
For n= 0.011
From equation 4.19 we ca
CE 453
Homework No. 3
1. Do Problem 2-10 in textbook.
Draw a milliequivalents-per-liter bar graph and list the hypothetical combinations
of compounds for the following water analysis.
Component
MG/L
Equivalent weight MEQ/L
Ca+
108
20
5.4
+
Mg
44
12.2
3.6
CE 453
Homework No. 3
1. Do Problem 2-10 in textbook.
Draw a milliequivalents-per-liter bar graph and list the hypothetical combinations
of compounds for the following water analysis.
Component
MG/L
Equivalent weight MEQ/L
Ca+
108
20
5.4
+
Mg
44
12.2
3.6
CE 453
Homework 4
1. Do Problems 3-5, 3-12 (section 3-4), 3-23 (section 3-8 of textbook) and 3-28 in
textbook.
3-5: Protoza are single celled aquatic animals that multiply by binary fission.
They have complex digestive systems and use solid organic matter
CE 453
HW # 5
1. Do problem 3.33 in textbook. (5 points)
Volume of wastewater added to 300-ml bottle= 6.0 ml
Initial DO =8.1 mg/l
5 day DO = 4.2 mg/l
k-rate = 0.1 per day
ultimate BOD =?
8.14.2
D1 D 2
=195 mg/l
6.0
=
BOD5=
P
300
-kt
BODt= BODu (1-10 )
2.
CE 453
HW # 5
1. Do problem 3.33 in textbook. (5 points)
Volume of wastewater added to 300-ml bottle= 6.0 ml
Initial DO =8.1 mg/l
5 day DO = 4.2 mg/l
k-rate = 0.1 per day
ultimate BOD =?
8.14.2
D1 D 2
=195 mg/l
6.0
=
BOD5=
P
300
-kt
BODt= BODu (1-10 )
2.
1.
Do Problem 2-11 in the textbook. Draw a milliequivalent-per-liter
2.
What is the health effect of color compounds? How would you remove these compounds from
drinking water? Explain.
In order to make water drinkable it is not only treated for turbidity
CE 453 Homework No. 9 Due: Nov. 4, 2009 1. Do the following problems/questions in textbook. 7-3, 7-6, 7-7, 7-10, 7-35, 7-17, and 7-18 2. Discuss the how particles (flocs, cysts, oocysts) are removed by contact filtration in dual-media filters. Relate your
CE 453 Homework 1 Due: September 2, 2009 1. Problem 2-3 in the textbook. 2. Problem 2-9 in the textbook. 3. A biologically-treated wastewater from town A is discharged into a river. A car manufacturing company located 5 miles downstream is discharging its
CE 453 Homework No. 7 Due: Oct. 21, 2009 1. Do the following problems in textbook: 4-25, 4-26, 4-27 (parts a and b only), 4-37, and 4-43. 2. For Example 4-15 (page 123) determine the following pipe diameters: a) Manhole 1 to Manhole 2 b) Manhole 2 to Manh
CE 453 Homework No. 5 Due: Oct.7, 2009 1. Answer Questions 30, 31, and 32 from Study Guide for Midterm 1. 2. 3. 4. 5. 6. 7. Do Problem 3-32 in textbook (Answer: BOD5 = 200 mg/l; k = 0.088 per day). Do Problem 3-33 in textbook (Answer: BOD5 = 430 mg/l; k=
CE 453 Homework No. 4 Due: September 23, 2009
1. 2.
Answer Questions 3-1, 3-7, 3-10, 3-13, and 3- 24 in textbook. Answer Questions 5, 11, and 14 listed in the Review Questions 1.
3. Consider the population of bacteria found in the aeration tank of a waste
CE 453 Homework 3 Due: September 16, 2009
1. 2. 3. 4. 5. 6. 7.
8.
Do Problem 2-12 in textbook. Do Problem 2-11 in textbook. (Note: calcium, magnesium, and alkalinity are expressed as mg/l of calcium carbonate). Do Problems 3-3 in textbook. Do Problem 3-9
CE 453 Study Guide for the Final Exam Fall 2007 i) ii) iii) iv) Study the course materials discussed during the review session.
homework Assignments (1 through 11). Study all review questions (1,2,3,and 4).
Study all Do the following problems.
1. P
CE 453 Homework 1 Due: September 5, 2007 1. Problem 2-2 in the textbook. 2. Problem 2-3 in the textbook. 3. A biologically-treated wastewater from town "A" is discharged into a river. Town "B" is located 10 miles downstream and uses the river water f
CE 453 Homework No. 8 Due: Oct. 28, 2009 1. Do Problems 4-42, 4-49, 4-51 in textbook. 2. Do Problem 6-22 in textbook. However, for part (b) assume 8 hours of pumping from 12:00pm to 8:00am. 3. 3. Do Problem 7-1 in textbook.