Table of Contents
aME5 SM Title Page (2).pdf
SOLUTIONS MANUAL
SOLUTIONS MANUAL
Wastewater Engineering:
Wastewater Engineering:
Wastewater Engineering:
Wastewater Engineering:
aME5 Contents (2)
aME5 SM Preface (2)
PREFACE
M&E5 SM Chap. 01 FINAL REVgt
INTRODUCTION TO
INTRODUCTION TO
INTRODUCTION TO
INTRODUCTION TO
WASTEWATER TREATMENT
PROBLEM1-1
Solution
PROBLEM1-2
Solution
PROBLEM1-3
Solution
PROBLEM1-4
Solution
PROBLEM1-5
Solution
PROBLEM1-6
Solution
PROBLEM1-7
Solution: Graphical Approach
Solution: Mathematical Approach
PROBLEM1-8
Solution
PROBLEM1-9
Solution
PROBLEM1-10
Solution
PROBLEM1-11
Solution
PROBLEM1-12
Solution
PROBLEM1-13
Solution
PROBLEM1-14
Solution
PROBLEM1-15
Solution
PROBLEM1-16
Solution
PROBLEM1-17
Solution
PROBLEM1-18
Solution
PROBLEM1-19
Solution
PROBLEM1-20
Solution
PROBLEM1-21
Solution
PROBLEM1-22
Solution
PROBLEM1-23
Solution
PROBLEM1-24
Solution: Part 1 (r = -kC
Solution: Part 2 (r = - kC)
Solution: Part 3 (r = -k)
PROBLEM1-25
Solution
PROBLEM1-26
Solution
PROBLEM1-27
Solution
M&E5 SM Chap. 02 FINAL REV
PROBLEM2-1
Solution
PROBLEM2-2
Solution
PROBLEM2-3
Solution
PROBLEM2-4
Solution
PROBLEM2-5
Solution
PROBLEM2-6
Solution
PROBLEM2-7
Solution
PROBLEM2-8
Solution
PROBLEM2-9
Solution
PROBLEM2-10
Solution
PROBLEM2-11
Solution
PROBLEM2-12
Solution
1Rearrange Eq. (2-40) to solve for the hydrogen ion concentration
PROBLEM2-13
Solution
1Compare the saturation concentrations of O
PROBLEM2-14
Solution
PROBLEM2-15
Solution
PROBLEM2-16
Solution
PROBLEM2-17
Solution
PROBLEM2-18
Solution
PROBLEM2-19
Solution
PROBLEM2-20
Solution
PROBLEM2-21
Solution
PROBLEM2-22
Solution
PROBLEM2-23
Solution
PROBLEM2-24
Solution
PROBLEM2-25
Solution
PROBLEM2-26
Solution
Comment
PROBLEM2-27
Solution
PROBLEM2-28
Solution
PROBLEM2-29
Solution
PROBLEM2-30
Solution
PROBLEM2-31
Solution
PROBLEM2-32
Solution
PROBLEM2-33
Solution
PROBLEM2-34
Solution
PROBLEM2-35
Solution
PROBLEM2-36
Solution
PROBLEM2-37
Solution
PROBLEM2-38
Solution
PROBLEM2-39
Solution
PROBLEM2-40
Solution
M&E5 SM Chap. 03 FINAL REV
PROBLEM 3-2
PROBLEM 3-2
PROBLEM 3-2
Solution
Solution
Solution
PROBLEM3-3
PROBLEM3-4
PROBLEM3-5
Totals
Flow weighted values
PROBLEM3-6
Solution
PROBLEM3-7
Solution
Solution
Solution
PROBLEM3-8
PROBLEM3-9
PROBLEM3-10
PROBLEMS3-11 to 3-12
PROBLEMS3-11 to 3-12
PROBLEMS3-11 to 3-12
PROBLEM3-13
Solution
Solution
Solution
PROBLEM3-14
PROBLEM3-15
PROBLEM3-16
Solution for City 1
M&E5 SM Chap. 04 FINAL REV
PROBLEM4-1
Instructional Guidelines
PROBLEM4-2
Instructional Guidelines
PROBLEM4-3
Solution
PROBLEM4-4
PROBLEM4-5
Solution
PROBLEM4-6
PROBLEM4-7
Solution
PROBLEM4-8
Solution
PROBLEM4-9
Solution
PROBLEM4-10
Solution
PROBLEM4-11
Solution
PROBLEM4-12
Solution
PROBLEM4-13
Solution
PROBLEM4-14
M&E5 SM Chap. 05.FINAL REV
PROBLEM5-2
PROBLEM5-2
PROBLEM5-2
PROBLEM5-3
PROBLEM5-4
PROBLEM5-5
PROBLEM5-6
PROBLEM 5-7
PROBLEM 5-7
PROBLEM 5-7
PROBLEM 5-8
PROBLEM 5-11
Solution
Solution
Solution
PROBLEM5-13
PROBLEM5-14
Solution
Solution
Solution
Solution
Solution
Solution
Solution
Solution
PROBLEM 5-19
PROBLEM 5-20
PROBLEM 5-21
PROBLEM 5-22
PROBLEM 5-22
PROBLEM 5-22
PROBLEM 5-23
PROBLEM 5-24
Solution
PROBLEM 5-25
PROBLEM 5-26
References
References
PROBLEM 5-27
Instructors Note: There are many possible solutions to this problem; a range of typical values is presented below. The student should be advised that other reference sources would have to be consulted, as some of the required information cannot be found in this text.
PROBLEM 5-28
Instructors Note: The detailed solution is provided for mixed liquor. Values calculated for settled activated sludge and primary sludge with activated sludge are summarized in the table.
Solution
PROBLEM 5-29
Solution
1.Determine K
2.Plot dC/dt versus C
The slope is equal to -KLa, so
PROBLEM 5-30
Solution
Solution
The maximum rate of oxygen transfer, then, is
PROBLEM 5-31
Solution
Solution
PROBLEM 5-33
PROBLEM 5-33
PROBLEM 5-33
PROBLEM 5-33
M&E5 SM Chap. 06 FINAL REV
PROBLEM6-1
Solution
PROBLEM6-2
Solution
PROBLEM6-3
Solution – Part a
Solution – Part b
PROBLEM6-4
Solution – Part a
Solution – Part b
Solution – Part c
PROBLEM6-5
PROBLEM6-6
PROBLEM6-7
PROBLEM6-8
Solution
PROBLEM6-9
Solution
PROBLEM6-10
Solution
PROBLEM6-11
Solution
PROBLEM6-12
Solution
PROBLEM6-13
Solution
PROBLEM6-14
Solution
PROBLEM6-15
Solution
PROBLEM6-16
Solution
PROBLEM6-17
Solution
PROBLEM6-18
Solution
PROBLEM6-19
Solution
M&E5 SM Chap. 07 FINAL REV
Instructors Note: In many of the problems where constituent concentrations are used, the units mg/L and g/m3 are used interchangeably to facilitate computations without introducing additional conversion factors.
PROBLEM 7-1
Solution
Solution
PROBLEM 7-5
Solution
Solution
Solution
Solution
Solution
PROBLEM 7-10
Solution
Solution
Solution
PROBLEM 7-11
Solution
Organic compound
PROBLEM 7-13
Solution
PROBLEM 7-14
Solution for diameter = 1 µm
PROBLEM 7-15
PROBLEM 7-34
Solution
PROBLEM 7-35
Solution
PROBLEM 7-36
Solution
PROBLEM 7-37
Solution (100 mg/L acetate)
PROBLEM 7-38
PROBLEM 7-38
Solution
PROBLEM 7-40
Solution (Influent COD = 2000 mg/L)
PROBLEM 7-42
Solution
PROBLEM 7-43
Solution
PROBLEM 7-44
Solution
M&E5 SM Chap. 08 ALL FINAL
Instructors Note: In many of the problems where constituent concentrations are used, the units mg/L and g/m
PROBLEM 8-3
PROBLEM 8-8
Solution
PROBLEM 8-9
Solution
PROBLEM 8-10
Solution – for wastewater #1
PROBLEM 8-11
Solution
PROBLEM 8-25
M&E5 SM Chap. 09 FINAL
Instructors Note: In many of the problems where constituent concentrations are used, the units mg/L and g/m3 are used interchangeably to facilitate computations without introducing additional conversion factors.In the first print of the textbook, Eq. (9-15) should to be corrected to
PROBLEM 9-1
Solution
PROBLEM 9-2
Solution
PROBLEM 9-3
Solution (4 m packing depth)
PROBLEM 9-4
Solution (for test data collected at 12oC)
PROBLEM 9-5
Solution
PROBLEM 9-6
Solution (Use the NRC equation for rock trickling filters that can be found in the 4th edition of the Metcalf and Eddy Wastewater Engineering textbook or other references)
PROBLEM 9-7
Solution
PROBLEM 9-8
Solution
PROBLEM 9-9
Solution
PROBLEM 9-10
Solution
PROBLEM 9-11
Solution (Influent flowrate is 37,000 m3/d)
PROBLEM 9-12
Solution - Part A, 40 percent BOD removal in trickling filter
Solution - Part B, 80 percent BOD removal in trickling filter
PROBLEM 9-13
Solution for Winter Condition (Temperature = 5°C and activated sludge SRT = 15 days)
Solution for Summer Condition (Temperature = 26°C and activated sludge SRT = 5 days)
PROBLEM 9-16
Solution
PROBLEM 9-17
PROBLEM 9-18
PROBLEM 9-19
PROBLEM 9-20
PROBLEM 9-21
Solution (Effluent NO3-N concentration = 2.0 mg/L)
PROBLEM 9-22
Solution
M&E5 SM Chap. 10 FINAL
ANAEROBIC SUSPENDED AND ATTACHED
ANAEROBIC SUSPENDED AND ATTACHED
PROBLEM10-3
Solution (flowrate of 1000 m3/d)
PROBLEM10-4
Solution
PROBLEM10-5
Solution
PROBLEM10-6
PROBLEM10-7
PROBLEM10-8
PROBLEM10-9
PROBLEM10-10
PROBLEM10-11
PROBLEM10-11
Problem Analysis
PROBLEM10-12
PROBLEM10-13
M&E5 SM Chap. 11 FINAL REV
REMOVAL OF RESIDUAL CONSTITUENTS
REMOVAL OF RESIDUAL CONSTITUENTS
Solution
Part a
Part a
Modifying Stock Sand To Produce Desired Filter Sand
Part c
PROBLEM11-2
Solution
PROBLEM11-3
Solution
PROBLEM11-4
Solution
PROBLEM11-5
Solution
PROBLEM11-6
Solution
PROBLEM11-7
Solution
PROBLEM11-8
Solution
PROBLEM11-9
Solution
PROBLEM11-10
PROBLEM11-11
Solution
PROBLEM11-12
Problem Statement - See text, page 1281
PROBLEM11-13
PROBLEM11-14
Solution
PROBLEM11-15
Solution
PROBLEM11-16
Solution
PROBLEM11-17
Solution
PROBLEM11-18
Solution
PROBLEM11-19
Solution
PROBLEM11-20
PROBLEM11-21
Solution
PROBLEM11-22
Solution
1.Review the three artciles related to disposal of nanofiltration, reverse osmosis, and elecetrodialysis.
2.Prepare a table to discuss the type of process combinations that are being proposed accoring to the article review.
Processes used to deal with brine from nanofiltration, reverse osmosis and electrodialysis in no special order.
PROBLEM11-23 - See text, page 1284
Solution
PROBLEM11-24
Solution
PROBLEM11-25
PROBLEM11-26
Solution
PROBLEM11-27
Solution
PROBLEM11-28
PROBLEM11-29
PROBLEM11-30
Solution – Part A
PROBLEM11-31
PROBLEM11-32
Solution
PROBLEM11-33
PROBLEM11-34
PROBLEM11-35
PROBLEM11-36
M&E5 SM Chap. 12 FINAL REV
PROBLEM12-1
Solution
PROBLEM12-2
Solution
PROBLEM12-3
Solution
Part a
Part b
PROBLEM12-5
Solution
PROBLEM12-6
Solution
PROBLEM12-7
Solution
PROBLEM12-8
Solution
PROBLEM12-9
Solution
PROBLEM12-10
Solution
PROBLEM12-11
Solution
PROBLEM12-12
Solution
PROBLEM12-13
Instructors Note: Assume the contact time in each reactor is 3 min and the t10/t ratio is 0.6.
Solution
PROBLEM12-14
PROBLEM12-15
PROBLEM12-16
PROBLEM12-17
PROBLEM12-21
PROBLEM12-22
PROBLEM12-23
PROBLEM12-25
Instructor Note: Cleaning is a major issue in the application of low-pressure low-intensity and low-pressure high-intensity UV disinfection systems. In low-pressure low-intensity lamp systems, the UV lamps are cleaned externally from the UV reactor whereas in low-pressure high-intensity cleaning of the lamps are cleaned in place with an integral wiper system.
This problem may not be feasible unless the date is set back to 1995. Little comparative work on the difference between low-pressure low-intensity and low-pressure high-intensity UV lamps has been published in the last 5-10 years. Alternatively, the students could be asked to review the City of Ames and/or the URS Corporation et al. reports, given below, and comment briefly on how the UV disinfection option was assessed and/or faired against other disinfection technologies.
PROBLEM12-26
PROBLEM12-27
M&E5 SM Chap. 13 FINAL REV
Solution
Solution
Solution
Solution
Solution
Solution
Solution
Solution
Solution
Problem Analysis and/or Resolution
Problem Analysis and/or Resolution
Problem Analysis and/or Resolution
Problem Analysis and/or Resolution
M&E5 SM Chap. 14 FINAL REV
PROBLEM 14-1
PROBLEM 14-1
PROBLEM 14-1
PROBLEM 14-1
PROBLEM 14-4
PROBLEM 14-5
Solution
Solution
Solution
Solution
Instructors Note: This problem is intended to have the student consider the various factors, economic as well as non-economic, in developing alternative solutions and recommendations for a practical application. In making a recommendation in actual practice, a number of conditions will have to be considered that are site specific and include cost and environmental factors. Some of those conditions are cited under the solution below. The instructor may want to add other factors or constraints to the problem. Because a community size of 200,000 people was specified, the treatment plant is of medium size and a reasonable level of operating skills can be assumed in the analysis.
Solution – for Data Set 1
Solution – for Data Set 1
Solution – for Data Set 1
Solution – for Data Set 1
Solution – for Parameter series A
Solution
Solution
Solution
Solution
Solution
Solution
Advantages
Disadvantages
Liquid biosolids transport
Dewatered biosolids transport
PROBLEM 14-13
PROBLEM 14-13
PROBLEM 14-13
PROBLEM 14-13
PROBLEM 14-14
M&E5 SM Chap. 15 FNAL REV
M&E5 SM Chap. 16 FINAL
AIR EMISSIONS FROM WASTEWATERTREATMENT FACILITIES ANDTHEIR CONTROL
AIR EMISSIONS FROM WASTEWATERTREATMENT FACILITIES ANDTHEIR CONTROL
AIR EMISSIONS FROM WASTEWATERTREATMENT FACILITIES ANDTHEIR CONTROL
AIR EMISSIONS FROM WASTEWATERTREATMENT FACILITIES ANDTHEIR CONTROL
PROBLEM16-1
Instructors Note: The total alkalinity required should be 14.68 instead of 10.87 mg/L as CaCO
Solution
PROBLEM16-2
Solution
PROBLEM16-3
Solution
PROBLEM16-4
Solution
PROBLEM16-5
Solution
PROBLEM16-6
Solution
PROBLEM16-7
Instructors Note: The problem statement specified that average load by fuel oil is 35 percent. For the convenience of using the data from AP42, however, it should be corrected to 5 percent (to be consistent with the basis of emission factors presented in AP42. The emission factors in Table 16-15 have errors for SI units (US customary units are correct). For the dual fuel engines, the emission factors for CO, NOx, and SO2 are 0.58, 1.16, and 0.0216S1+0.386S2, respectively.
Because the emission factors presented in Table 16-15 are based on the fuel input, assumptions must be made for the average output and the efficiency of the engine. In this solution, 38% efficiency for the reciprocating engine (electrical power output to fuel input). For SO2, S1 is weight percent of sulfur in the fuel oil, and S2 is weight percent of sulfur in natural gas. In this solution, 1.0 percent for fuel oil and 0.00077 percent for natural gas are assumed. Instructor may provide these values, or students may be tasked to find out the typical values and state their assumptions.
Alternatively, the original AP42 document may be used to find the emission factors based on the power output.
Solution
PROBLEM16-8
Instructors Note: The reference to the example problem is to be corrected to Example 16-5. The available digester gas is more than the natural gas use in the existing condition from Example 16-5. The students may solve assuming only natural gas is replaced with the digester gas, or it can be assumed that the excess natural gas is used to generate electricity onsite, thereby reducing the purchase of electricity from the electrical grid. Both scenarios are presented in this solution.
Solution
M&E5 SM Chap. 17 FINAL
ENERGY CONSIDERATIONS IN
ENERGY CONSIDERATIONS IN
ENERGY CONSIDERATIONS IN
ENERGY CONSIDERATIONS IN
WASTEWATER MANAGEMENT
M&E5 SM Chap. 18 FINAL REV
WASTEWATER MANAGEMENT:
WASTEWATER MANAGEMENT:
WASTEWATER MANAGEMENT:
WASTEWATER MANAGEMENT:
FUTURE CHALLENGES AND OPPORTUNITIES
PROBLEM18-1
Solution
PROBLEM18-2
Solution
PROBLEM18-3
Solution
PROBLEM18-4
Solution
PROBLEM18-5
Solution
PROBLEM18-6
Solution
