Corrections for OWP Products
Page Number: 36 Paragraph 1, line 2 For: Section 1.51 Read: Section 1.5.1 |
Page Number: 54 Example 1 equation For: \(\eqalign{ Read: \(\eqalign{ |
Page Number: 59 Section 1.7, “Regulatory Requirements,” paragraph 1, line 3 For: statues Read: statutes |
Page Number: 151 Section 2.3.5.2, “Chemical Hazards,” paragraph 3, line 3 For: Figure 2.8 Read: Figure 2.9 |
Page Number: 295 Question 17, response b For: 23.9 gal/min Read: 19.4 gal/min |
Page Number: 453 Example 12, first equation on page For: \(\eqalign{ Read: \(\eqalign{ |
Page Number: 466 Example 17—US Customary equation For: \(\eqalign{ Read: \(\eqalign{ |
Page Number: 496 Figure 5.59, top of graphic For: MACRO RANGE Read: MICRO RANGE For: MICRO PARTICLE RANGE Read: MACRO PARTICLE RANGE |
Page Number: 506 Figure 5.73, bottom-right label For: memebrane Read: membrane |
Page Number: 829 Sidebar definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 1053 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 138 Example 9 equation For: \(\eqalign{ Read: \(\eqalign{ |
Page Number: 546 Paragraph 3, line 5 For: hese Read: these |
Page Number: 670 Example 3, Unknown column For: Vsl = daily volume of sludge, gal/d Read: Vsl = daily volume of sludge, gal |
Page Number: 670 Example 4, Unknown column For: Vsl = daily volume of sludge, gal/d Read: Vsl = daily volume of sludge, gal |
Page Number: 723 Example 25, number 2 equation, answer For: 607 lb/ft · h Read: 183 lb/ft · h |
Page Number: 834 Example 46, Known column, line 4 For: Cw,c = 30% moisture Read: Cw,compost = 30% moisture |
Page Number: 905 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 9 Section 1.2.1, “Overview of O&M Challenges,” paragraph 2, bullet 1, line 1 For: ewers Read: sewers |
Page Number: 17 Question 1 For: 1. What is another name for a wastewater collection system? Read: 1. What is another name for a wastewater collection system? |
Page Number: 26 Example 1, Residential flow equation (bottom of page) For: gpd Read: 85 gpd |
Page Number: 43 Figure 2.11, bottom third of figure, number 1, line 2 For: accesssible Read: accessible |
Page Number: 44 Line 7 For: Figures 2.14 and 2.15 Read: Figures 2.13 and 2.14 |
Page Number: 45 Line 11 For: Figures 2.14 and 2.15 Read: Figures 2.13 and 2.14 |
Page Number: 50 Line 6 For: Figures 2.17 and 2.19 Read: Figures 2.16 and 2.18 |
Page Number: 60 Figure 2.22, lower left-hand label, line 1 For: Exagerated Read: Exaggerated |
Page Number: 110 Line 8 For: Figure 3.6 Read: Figure 3.7 |
Page Number: 226 Sidebar information note, line 2 Transpose the quotation mark and the period. |
Page Number: 227 Sidebar information note, line 3 Transpose the right quotation mark and the comma. |
Page Number: 311 Figure 5.2 caption, credit line For: SRECO_FLEXIBLE Read: SRECO Flexible, Inc |
Page Number: 313 Figure 5.4 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 319 Section 5.2.1.4, “Cleaning Operation,” paragraph 2, line 2 For: pump Read: cleaning nozzle |
Page Number: 336 Figure 5.11 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 337 Figure 5.11 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 350 Figure 5.14 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 355 Figure 5.15 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 356 Figure 5.16 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 356 Figure 5.17 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 357 Figure 5.18 caption, credit line For: SRECO_FLEXIBLE, Inc Read: SRECO Flexible, Inc |
Page Number: 421 Section 6.1.5.1, “Working with AC Pipe,” paragraph 2, line 3 For: sulphates Read: sulfates |
Page Number: 462 Section 6.5.8, “Bedding, Backfilling, and Compaction,” paragraph 3, line 1 For: scrubs Read: shrubs |
Page Number: 480 Example 3, last paragraph For: The test time, 160 seconds, is greater than 61 seconds (the smaller of tQ and tq), so this section of pipe passes. Read: The test time, 160 seconds, is less than 282 seconds (the smaller of tQ and tq), so this section of pipe fails. |
Page Number: 481 Paragraph 1 (in the pink box) For: The test time of 225 is greater than the smaller of tQ and tq, therefore, this section of pipe passes. Read: The test time of 225 is less than the smaller of tQ and tq, therefore, this section of pipe fails. |
Page Number: 497 Question 47, responses a through d For: a. 300 GPD/in/mi Read: a. 350 GPD/in/mi |
Page Number: 499 Key Terms For: total dynamic head (TDM) Read: total dynamic head (TDH) |
Page Number: 552 Section A.7.8 title For: Pump Speed-Performance Relationships Read: Pump Speed–Performance Relationships |
Page Number: 561 Section A.8.3.1, “Graphs and Charts,” paragraph 2, line 11 For: yaxis Read: y-axis |
Page Number: 578 Example 63, equation, line 3 For: 454.5 g Read: 453.6 g
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Page Number: 578 Example 63, equation, line 4 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 587 Answer Key, Chapter 1, “Introduction to Wastewater Collection,” answer 16 For: a Read: b |
Page Number: 46 Figure 2.11, third label from bottom For: 2" cleanout/conection for blowoff valve Read: 2" cleanout/connection for blowoff valve |
Page Number: 143 First and second items under the first instance of “where,” (near top of page) For: Pout = power factor in hp Read: Pout = power output in hp |
Page Number: 149 First item under the second instance of “where,” (bottom of page) For: iunbalance[%] = current imbalance in percent Read: iunbalance[%] = current unbalance in percent |
Page Number: 564 Example 63, equation, line 4 For: 454.5 g Read: 453.6 g |
Page Number: 564 Example 63, equation, line 5 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 24 “ACTIVATED SLUDGE SYSTEMS” section, paragraph 1, lines 5 and 6 For: Processes Read: Systems |
Page Number: 28 Line 2 For: Processes Read: Systems |
Page Number: 85 Section 2.5.8, “Safety Valves,” paragraph 1, lines 4 and 5 For: “Chlorine Container” Read: “Chlorine Containers” |
Page Number: 167 Example 7, Unknown column For: velocity, ft/s Read: v = velocity, ft/s |
Page Number: 174 Section 3.5.3, “Vortex-Type Grit Chambers,” line 8 For: Figure 1.9 Read: Figure 1.8 |
Page Number: 192 Sidebar information note, line 5 For: Processes Read: Systems |
Page Number: 262 Example 1, Unknown column For: food to microorganism ratio, lb BOD/lb MLVSS • d Read: food to microorganism ratio, lb BOD/lb VSS • d |
Page Number: 326 Second line from the bottom For: Section 5.2.7.4, Process Inspection,” Read: Section 5.2.7.4, “Process Inspection,” |
Page Number: 328 Lines 16 and 17 For: a poor-settled sludge Read: a poorly settled sludge |
Page Number: 333 Second sidebar information note, line 4 For: Examinations Read: Examination |
Page Number: 335 Bullet 3 (under paragraph 5), line 2 For: Separations Read: Separation |
Page Number: 336 Sidebar information note, line 4 For: Record-keeping Read: Recordkeeping |
Page Number: 337 Table 5.5, “VSS” table head The VSS table head and its accompanying rule, which currently sit over the “Aer, %” column, should should extend to include the “Total Vol, lb” column. |
Page Number: 337 Table 5.5, footnote a For: Middle of three aerations tanks. Read: Middle of three aeration tanks. Aer, mg/L is the MLSS and Aer, % is the volatile fraction of the MLSS. |
Page Number: 337 Table 5.5, footnote b For: Multiply lb × 0.454 to obtain kg. Read: Total mass of volatile solids in all three aeration tanks, lb. Multiply lb × 0.454 to obtain kg. |
Page Number: 351 Section 5.5.3.4, “Stiff White Foam,” paragraph 1, line 1 For: young sludge or an underloaded system Read: young sludge or an overloaded system |
Page Number: 357 Line 4 For: Systems Read: System |
Page Number: 401 Paragraph 2, line 1 For: Figure 5.67 Read: Figure 5.71 |
Page Number: 401 Paragraph 4, line 1 For: Figure 5.67 Read: Figure 5.71 |
Page Number: 407 Section 5.7, “Startup and Shutdown,” paragraph 2, line 5 For: “Process Startup After Initial Construction,” Read: “Startup After Initial Construction,” |
Page Number: 407 Section 5.7, “Startup and Shutdown,” paragraph 2, lines 9 and 10 For: “Process Long-Term Shutdown and Startup Procedures” Read: “Long-Term Shutdown and Startup Procedures” |
Page Number: 407 Section 5.7, “Startup and Shutdown,” paragraph 2, lines 10 and 11 For: “Process Short-Term Shutdown and Startup Procedures,” Read: “Short-Term Shutdown and Startup Procedures,” |
Page Number: 413 Paragraph 3, line 5 For: Figure 5.68 Read: Figure 5.72
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Page Number: 413 Line 3 from the bottom For: Figure 5.69 Read: Figure 5.72 |
Page Number: 421 “SECONDARY CLARIFIERS” section, bullet 1 For: See Section 5.7.4.2, “Flow Control Gates, Valves, and Weirs,” for checking out the water control structures. Read: See “Flow Control Gates, Valves, and Weirs” in this section. |
Page Number: 431 Paragraph 2, line 1 For: “Equipment Startup and Shutdown,” Read: “Startup and Shutdown,” |
Page Number: 431 Section 5.7.7.1, “ASP Influent and Effluent Flow Control Equipment,” Paragraph 2, line 1 For: “Equipment Startup and Shutdown,” Read: “Startup and Shutdown,” |
Page Number: 432 Section 5.7.7.2, “Surface Aerators and Mixers,” Paragraph 1, line 4 For: “Equipment Startup and Shutdown,” Read: “Startup and Shutdown,” |
Page Number: 444 Section 5.8.5, “Secondary Clarifiers,” paragraph 2, line 2 For: scrapper Read: scraper |
Page Number: 548 Sidebar information note, line 4 For: Processes Read: Systems |
Page Number: 549 Table 6.11 caption For: FFBR Read: FBBR
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Page Number: 549 Table 6.11 column heads (2 instances) For: FFBR Read: FBBR |
Page Number: 549 Table 6.11, column 2 body (2 instances) For: FFBR Read: FBBR |
Page Number: 554 Sidebar information note, line 8 For: Processes Read: Systems |
Page Number: 555 Line 11 from the bottom For: Processes Read: Systems |
Page Number: 559 Line 7 For: Processes Read: Systems |
Page Number: 566 Lines 1 and 2 from the bottom For: “Activated Sludge (Secondary Treatment)” Read: “Activated Sludge Systems (Secondary Treatment)” |
Page Number: 567 Section 6.4.8, “Startup and Shutdown Procedures,” paragraph 2, line 1 For: MRRB Read: MBBR |
Page Number: 584 Section 7.3.2.1, “Free Chlorine,” pink box, line 1 For: hypochloric acid Read: hydrochloric acid |
Page Number: 663 Figure 7.29, “Radiation spectrum and UV lamp output” For: UV-A Read: UV-C For: UV-C Read: UV-A |
Page Number: 714 Example 1—Metric, number 2 equation For: \[0.077{{\left[ {persons} \right]} \over {{m^2}}}\] Read: \[0.077{{persons} \over {{m^2}}}\] |
Page Number: 715 Example 2—US Customary Units, paragraph following number 3 Delete:
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Page Number: 716 Example 2—US Customary Units, first paragraph on page For: In addition, the calculated organic (BOD) loading rate is 59.0 pounds per acre per day. This means the lagoon system continues to operate properly because the loading rate did not exceed the maximum 60 pounds per acre per day. Read: The increase in flow increases the organic (BOD) loading rate. That is, the lagoon has to treat more organic matter. The calculated organic (BOD) loading rate is 59.0 pounds per acre per day. This means the lagoon system continues to operate properly because the loading rate did not exceed the maximum 60 pounds per acre per day. |
Page Number: 730 Section 8.7.13, “Batch and Controlled Discharge Operations,” paragraph 3, line 6 For: ef-fluent Read: effluent |
Page Number: 731 “Check Your Understanding,” question 4 Delete the second question mark. |
Page Number: 758 Question 22, response b For: breading Read: breeding |
Page Number: 762 Section 9.2.1, “Laboratory Hazards,” paragraph 2, line 6 For: is Read: are |
Page Number: 771 Section 9.2.2.8, “Using Proper Laboratory Techniques,” paragraph 3, lines 4 and 5 For: To avoid splashing acid, always pour acid into water; do not pour water into acid. Read: To avoid splashing acid, always pour acid into water and mix the solution. Do not pour water into acid. |
Page Number: 790 Paragraph 5 (above Example 11), line 1 For: water or hydration Read: water of hydration |
Page Number: 794 Section 9.3.4.4, “Liquid Solutions—Dilution Ratio,” paragraph 2, lines 4 and 5 For: dilution ratio Read: dilution factor |
Page Number: 820 Equation in pink box For: 200 mg/L Read: 220 mg/L
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Page Number: 845 “TYPICAL VALUES” section, right column head Insert a space between the comma and μS. |
Page Number: 848 Table 9.10, right column For: Bromcresol Read: Bromocresol For: bromcresol Read: bromocresol |
Page Number: 926 Paragraph between the first 2 pink boxes, lines 1 through 3 For: SDI is defined as the weight in mg of solids per 100 mL of mixed liquor suspended solids (after 30 minutes of settling). Read: SDI is defined as the weight in g of solids per 100 mL of mixed liquor suspended solids (after 30 minutes of settling). |
Page Number: 965 “Rounding” sidebar, paragraph 1, line 14 For: tenths Read: tens |
Page Number: 994 Line 1 For: gages Read: gauges |
Page Number: 1022 Example 63, equation, line 4 For: 454.5 g Read: 453.6 g |
Page Number: 1022 Example 63, equation, line 5 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 25 “Check Your Understanding,” question 4 For: phosphorous Read: phosphorus |
Page Number: 45 Question 16 For: phosphorous Read: phosphorus |
Page Number: 47 “Learning Objectives,” item 2 For: phosphorous Read: phosphorus |
Page Number: 49 Paragraph 1, line 1 For: Phosphorous Read: Phosphorus |
Page Number: 49 Paragraph 4, line 2 For: phosphorous Read: phosphorus |
Page Number: 49 Example 1, line 3 For: phosphorous Read: phosphorus |
Page Number: 50 “Check Your Understanding,” question 1 For: phosphorous Read: phosphorus |
Page Number: 74 Figure 2.17, third orange row For: In two-stage activated sludge system, SVI of nitrification sludge is very high (greater than 250) Read: In 2-stage activated sludge systems, SVI of nitrification sludge is very high (greater than 250) |
Page Number: 77 Figure 2.19 caption For: Nitrification-denitrification Read: Nitrification–denitrification |
Page Number: 78 Figure 2.20 caption For: Nitrification-denitrification Read: Nitrification–denitrification |
Page Number: 89 Section 2.3, “Phosphorus Removal,” paragraph 1, lines 8 and 9; paragraph 2, lines 1 and 2 For: Phosphorous or phosphorous Read: Phosphorus or phosphorus |
Page Number: 91 Section 2.3.1, “Biological Phosphorus Removal,” multiple instances For: phosphorous Read: phosphorus |
Page Number: 91 Figure 2.28 caption For: Phosphorous Read: Phosphorus |
Page Number: 99 “Check Your Understanding,” questions 1, 2 (two instances), 3, and 4 For: phosphorous Read: phosphorus |
Page Number: 106 “Check Your Understanding,” questions 1, 3, and 4 For: phosphorous Read: phosphorus |
Page Number: 107 Section 2.3.3, title and line 1 For: Phosphorous Read: Phosphorus
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Page Number: 107 Lines 2 and 3 from the bottom For: phosphorous Read: phosphorus |
Page Number: 108 Multiple instances on the page For: phosphorous Read: phosphorus |
Page Number: 114 Figure 2.37 courtesy line For: Reprinted with permission of Patrick Wiley, Sanford Sewerage District, Sanford, Maine Read: Reprinted with permission of Patrick Wiley and the Sanford Sewerage District, Sanford, Maine |
Page Number: 115 Section 2.3.3.6, “Reviewing Plans and Specifications,” paragraph 1, line 9 For: phosphorous Read: phosphorus |
Page Number: 116 “Check Your Understanding,” questions 1, 2, 3, and 4 For: phosphorous Read: phosphorus |
Page Number: 122 Paragraph 5, line 2 For: phosphorous Read: phosphorus |
Page Number: 126 “Check Your Understanding,” questions 2 and 4 For: phosphorous Read: phosphorus |
Page Number: 134 Section 2.4.4, “Optimizing Nitrogen and Phosphorus Removal,” paragraph 2, line 1 For: phosphorous Read: phosphorus |
Page Number: 138 Paragraph 1, lines 3, 10, and 11 For: phosphorous Read: phosphorus |
Page Number: 147 “Check Your Understanding,” question 4 For: phosphorous Read: phosphorus |
Page Number: 149 Question 3, response d For: phosphorous Read: phosphorus |
Page Number: 150 Question 19, text and response c For: Phosphorous or phosphorous Read: Phosphorus or phosphorus |
Page Number: 151 Question 31 For: phosphorous Read: phosphorus |
Page Number: 161 Line 18 under “Metal Salts” For: principle Read: principal |
Page Number: 164 Figure 3.4 caption For: Dry polymer in 1,650-pound bag and liquid polymer in 55-pound barrels and 275-pound totes Read: Dry polymer in 1,650-pound bag and liquid polymer in 55-gallon barrels and 275-gallon totes |
Page Number: 165 Paragraph 2, line 3 For: principle Read: principal |
Page Number: 179 Line 4 under “Liquid Injection Systems” For: principle Read: principal |
Page Number: 182 Paragraph 1, line 10 For: principle Read: principal |
Page Number: 192 Section 3.2.4.2, “Performance Metrics,” line 1 For: principle Read: principal |
Page Number: 197 Example 7—Metric, number 1 equation For: 10[ft] Read: 10[m] |
Page Number: 204 Section 3.3, “Conditioning,” paragraph 2, line 8 For: so the this section will focus on Read: so this section will focus on |
Page Number: 238 Example 10, line 2 For: to to Read: to |
Page Number: 270 Figure 3.59, top of graphic For: MOLECUAR RANGE Read: MOLECULAR RANGE For: MACRO RANGE Read: MICRO RANGE For: MICRO PARTICLE RANGE Read: MACRO PARTICLE RANGE |
Page Number: 270 Figure 3.59 caption For: contaminant Read: contaminants |
Page Number: 284 Example 13, line 3 For: feet Read: foot |
Page Number: 284 Example 13, Known column For: Asurface = membrane surface area = 1,200 ft2 Read: A = membrane surface area = 1,200 ft2 For: Qpermeate = permeate flow rate = 25 gal/min Read: Qp = permeate flow rate = 25 gal/min |
Page Number: 284 Example 13 equation, line 1 For: Q Read: Qp |
Page Number: 286 Example 15, Known column (corrected version) Cf = feed concentration = 106 microorganisms/L |
Page Number: 298 Example 19, Known column For: F = temperature correction from standard 77°F = 0.742. Read: F = temperature correction from standard 77°F = 0.762. |
Page Number: 299 Example 20, line 1 For: Example 13 Read: Example 19 |
Page Number: 299 Example 20 equation For: membrane area [ft2] Read: A [ft2] |
Page Number: 300 Bullet 2 from the top, lines 1 and 2 For: (including fats, oils, grease surfactants and fatty acids) Read: (including fats, oils, grease, surface active agents, and fatty acids) |
Page Number: 304 Paragraph 4, line 7 For: principle Read: principal |
Page Number: 309 Question 48, line 1 For: producitivity Read: productivity |
Page Number: 309 Question 48, response c For: 114 gal/ft2/d Read: 118 gal/ft2/d |
Page Number: 318 Example 1, number 1, line 1 For: pound Read: pounds |
Page Number: 319 Example 1, number 3, first equation, line 2 For: 2,753 Read: 3,753 |
Page Number: 319 Example 1, number 3, first equation, line 2 For: 2,753 Read: 3,753 |
Page Number: 320 Example 2, Known column For: BODin Read: Cin For: BODout Read: Cout |
Page Number: 321 Example 3, Unknown column For: gal/d Read: gal |
Page Number: 322 Example 4, Unknown column For: gal/d Read: gal |
Page Number: 322 Example 4, paragraph before equation, line 1 For: voulme Read: volume |
Page Number: 325 Example 5, end of paragraph 1 Insert: Assume a specific gravity of 1.0 for the sludge. |
Page Number: 325 Example 5, end of Known column Insert: SGsl = specific gravity of the sludge = 1.0 |
Page Number: 326 Example 5, number 1 equation, line 1 For: Ps Read: Ps1 |
Page Number: 331 Example 7, end of paragraph 1 Insert: Assume a specific gravity of 1.0 for the sludge. |
Page Number: 331 Example 7, Known column For: Qs1 Read: Qsl |
Page Number: 331 Example 7, end of Known column Insert: SGsl = specific gravity of the sludge = 1.0 |
Page Number: 331 Example 7, number 1 For: Calculate the daily volume of the sludge (Qsl). Read: Convert the daily volume of the sludge (Qsl) from gallons per minute to gallons per day. |
Page Number: 340 Example 12, Unknown column For: Sludge withdrawal rate, lb/min Read: MRs, sl = sludge withdrawal rate, lb/min |
Page Number: 341 Example 12, number 2 For: Calculate the solids leaving the thickener Ms, sl in pounds per minute. Read: Calculate the solids leaving the thickener (Ms, sl) in pounds per minute. |
Page Number: 350 Example 18 equation For: Qin Read: Qsolids |
Page Number: 361 Example 21, number 2 equation For: Qinfluent Read: HLR |
Page Number: 361 Example 22, number 2 equation For: Qinfluent Read: HLR |
Page Number: 362 Example 23, line 1 For: basket Read: basket centrifuge |
Page Number: 367 Line 1 For: eficiency Read: efficiency |
Page Number: 367 Section 4.3.3.6, “Troubleshooting,” line 1 For: Since Read: Because |
Page Number: 371 Sidebar definition for “free water,” last line For: filtration and centrifugation. Read: filtration, and centrifugation. |
Page Number: 374 Example 25, number 2 equation, answer For: 607 lb/ft · h Read: 183 lb/ft · h |
Page Number: 378 Figure 4.17 caption For: Enclosed RDT with one of the access panels removed (left) and installed (right) Read: Enclosed RDT with one of the access panels installed (left) and removed (right) |
Page Number: 390 Figure 4.23 caption For: Most widely used cylindrical shaped anaerobic digester Read: Cylindrical anaerobic digesters |
Page Number: 390 Figure 4.24 caption For: digester Read: digesters |
Page Number: 431 “STRUVITE CONTROL” section, paragraph 1, line 9 For: vivianite (Fe3(PO4)2 Read: vivianite (Fe3(PO4)2)
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Page Number: 436 Sidebar information note, lines 2 and 3 For: Section 4.1. 4.3 Read: Section 4.1.4.3 |
Page Number: 436 Example 29, Unknown column, first item For: MTS = mass of total solids. lb Read: MTS = mass of total solids, lb
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Page Number: 443 Example 34, paragraph 1, line 4 For: ouput Read: output |
Page Number: 446 Example 37, number 2, second equation For: MTS, out [lb] Read: MTS, in [lb] |
Page Number: 452 Sidebar definition for “acid regression stage” For: acid regression stage Read: acid regression stage
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Page Number: 457 Section 4.4.1.14, “Example of Actual Operation,” paragraph 2, line 3 For: stystem Read: system |
Page Number: 462 First pink box For: biomass + oxygen → water + ammonium carbonate Read: biomass + oxygen → carbon dioxide + water + ammonium carbonate
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Page Number: 465 Table 4.15 source information (missing in earlier printings) Sources: J. C. Dyer, A. S. Vernick, and H. D. Feiler, Handbook of Industrial Wastes Pretreatment/Water Management Series, Garland STPM Press, New York, NY, 1981. |
Page Number: 466 “DIGESTION TEMPERATURE” section, paragraph 2, line 7 For: the temperature Read: the sludge temperature |
Page Number: 466 “DIGESTION TEMPERATURE” section, paragraph 2, lines 8–10 For: Degree-days is the multiplication of temperature 32°F (0°C) of sludge inside the digester and SRT (days). Read: To determine degree-days, multiply the sludge temperature (°C) and the SRT (days). |
Page Number: 480 Example 45, line 3 For: ton Read: ton of sludge solids |
Page Number: 481 Example 45, number 2 equation, line 1 For: + Read: × |
Page Number: 487 Example 46, end of Known column Insert: Pw,blend = 50% moisture |
Page Number: 487 Example 46, number 1, line 1 For: dewatered sludge Read: dewatered sludge (Pw,sludge) |
Page Number: 487 Example 46, Unknown column For: MRC Read: MRc |
Page Number: 488 Example 47, end of Known column Insert: Pw,blend = 50% moisture |
Page Number: 488 Example 47, number 1, line 1 For: dewatered sludge Read: dewatered sludge (Pw,sludge) |
Page Number: 496 Example 48, Known column, second item For: PS Read: Ps, in |
Page Number: 502 Figure 4.64 The photo shows a gravity belt thickener, not a belt filter press. |
Page Number: 504 Example 49, sentence before equation For: Determine the hydraulic loading in gallons per minute per meter. Read: Determine the hydraulic loading in gallons per meter per minute. |
Page Number: 509 Section 4.5.1.4, “Rotary Press,” paragraph 4, line 7 For: introuduces Read: introduces |
Page Number: 591 Section 5.1.4.5, “Disinfection Systems,” paragraph 3, line 1 For: principle Read: principal |
Page Number: 636 Section 5.3, “Motors,” paragraph 4, line 1 For: principle Read: principal |
Page Number: 687 Figure 5.79, first orange row For: idicated Read: indicated |
Page Number: 701 Second sidebar information note, line 3 For: Section 5.3 Read: Section A.5.3 |
Page Number: 713 Figure 5.88, credit line For: Reprinted with permission of Girard Industries, www.girardind.com Read: Reprinted with permission of Girard Industries, girardindustries.com |
Page Number: 738 Example 19—Metric, second equation For: \[A = {1 \over 2}B \times H{1 \over 2} \times 3\left[ m \right] \times 1.5\left[ m \right] = 2.25{\rm{ }}{m^2}\] Read: \[A = {1 \over 2}B \times H = {1 \over 2} \times 3\left[ m \right] \times 1.5\left[ m \right] = 2.25{\rm{ }}{m^2}\] |
Page Number: 745 Example 24—US Customary Units equation, line 4 For: 375 ft 3 Read: 3.75 ft 3 |
Page Number: 746 Figure A.15 For: cutoff type to the right of the graphic Read: H |
Page Number: 748 Information sidebar, paragraph 2, lines 10–14 For: For instance, in Example 27 on calculating the volume of a cone, the precise answer is 10,472 ft3, but it is also correct to say that the volume is about 10,500 ft3. Read: For instance, an operator calculated the volume of a cone, and the precise answer is 10,472 ft3. It is also correct to say that the volume is about 10,500 ft3. |
Page Number: 761 Example 43—US Customary Units, third equation (velocity, v) For: $$v\left[ {{{ft} \over s}} \right] = {{Q\left[ {{{f{t^3}} \over s}} \right]} \over {A\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = {{1.114\left[ {{{f{t^3}} \over s}} \right]} \over {0.5\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = 3.18{{ft} \over s} = 3.18\,fps$$ Read: $$v\left[ {{{ft} \over s}} \right] = {{Q\left[ {{{f{t^3}} \over s}} \right]} \over {A\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = {{1.114\left[ {{{f{t^3}} \over s}} \right]} \over {0.35\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = 3.18{{ft} \over s} = 3.18\,fps$$ |
Page Number: 764 Example 44—US Customary Units, second equation from the top, line 2 For: $$1.73{{ib} \over {i{n^2}}}$$ Read: $$1.73{{lb} \over {i{n^2}}}$$ |
Page Number: 836 Example 73, equation, line 3 For: 454.5 g Read: 453.6 g |
Page Number: 836 Example 73, equation, line 4 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 849 Answer Key (corrected version), Chapter 1, “Introduction to Wastewater Treatment,” answer 19 For: hydrogen sulfide (H2S), organic gases Read: hydrogen sulfide (H2S), organic gases |
Page Number: 849 Answer Key (corrected version), Chapter 2, “Nutrient Removal (Tertiary Treatment),” answer 8 For: alkalinity, DO, levels, oxic sludge retentation time Read: alkalinity, DO levels, oxic sludge retention time |
Page Number: 849 Answer Key (corrected version), Chapter 2, “Nutrient Removal (Tertiary Treatment),” answer 16 For: ammonia, gaseous ammonia Read: ammonium, gaseous ammonia |
Page Number: 849 Answer Key (corrected version), Chapter 2, “Nutrient Removal (Tertiary Treatment),” answer 19 For: alkalinity, DO levels, oxic sludge retention time Read: c |
Page Number: 849 Answer Key (corrected version), Chapter 2, “Nutrient Removal (Tertiary Treatment),” answer 20 For: b Read: a |
Page Number: 849 Answer Key (corrected version), Chapter 1, “Introduction to Wastewater Treatment,” answer 12 For: collection treatment, discharge/reuse Read: collection, treatment, discharge/reuse |
Page Number: 850 Answer Key (corrected version), Chapter 4, “Residual Solids Management” 1. g |
Page Number: 853 Glossary definition for “acid regression stage” For: acid regression stage A stage of anaerobic digestion during which the production of volatile acids is reduced and acetate and ammonia compounds form, causing the pH to increase. Read: acid regression stage A stage of anaerobic digestion during which the concentration of volatile acids is reduced and acetate and ammonia compounds form, causing the pH to increase. |
Page Number: 856 Glossary definition for “bound water” For: bound water Water contained within the cell mass of sludges or strongly held on the surface of colloidal particles. A cause of bulking sludge in the activated sludge process. Read: bound water Water contained within the cell mass of sludges or strongly held on the surface of colloidal particles. A cause of bulking sludge in the activated sludge process. Also see free water. |
Page Number: 863 Restore the missing definition between “free residual chlorination” and “friction loss”: free water The water particle that is not attached to the sludge solids. Free water can be removed using the physical processes such as gravity, filtration, and centrifugation. Also see bound water.
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Page Number: 864 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 884 For: Chemical phosphorous removal Read: Chemical phosphorus removal |
Page Number: 889 Second entry under “Phosphorus removal” For: phosphorous Read: phosphorus |
Page Number: 321 Sidebar definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 325 Figure 4.92 caption, credit line For: Reprinted with permission of YSI, a Xylem brand Read: Left: Reprinted with permission of Hach Company; right: Reprinted with permission of YSI, a Xylem brand |
Page Number: 332 Paragraph 2, line 7 For: Section 4.8 Read: Section 4.2 |
Page Number: 391 Sidebar information note, lines 3 and 4 For: Section A.8, “Analysis and Presentation of Data,” Read: Section A.9, “Data Analysis and Presentation,” |
Page Number: 395 Question 12, response d For: 1,052.4 lb/d Read: 682.9 lb/d |
Page Number: 540 Example 19—Metric, second equation For: \[A = {1 \over 2}B \times H{1 \over 2} \times 3\left[ m \right] \times 1.5\left[ m \right] = 2.25{\rm{ }}{m^2}\] Read: \[A = {1 \over 2}B \times H = {1 \over 2} \times 3\left[ m \right] \times 1.5\left[ m \right] = 2.25{\rm{ }}{m^2}\] |
Page Number: 547 Example 24—US Customary Units equation, line 4 For: 375 ft 3 Read: 3.75 ft 3 |
Page Number: 548 Figure A.15 For: cutoff type to the right of the graphic Read: H |
Page Number: 550 Information sidebar, paragraph 2, lines 10–14 For: For instance, in Example 27 on calculating the volume of a cone, the precise answer is 10,472 ft3, but it is also correct to say that the volume is about 10,500 ft3. Read: For instance, an operator calculated the volume of a cone, and the precise answer is 10,472 ft3. It is also correct to say that the volume is about 10,500 ft3. |
Page Number: 563 Example 43—US Customary Units, third equation (velocity, v) For: $$v\left[ {{{ft} \over s}} \right] = {{Q\left[ {{{f{t^3}} \over s}} \right]} \over {A\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = {{1.114\left[ {{{f{t^3}} \over s}} \right]} \over {0.5\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = 3.18{{ft} \over s} = 3.18\,fps$$ Read: $$v\left[ {{{ft} \over s}} \right] = {{Q\left[ {{{f{t^3}} \over s}} \right]} \over {A\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = {{1.114\left[ {{{f{t^3}} \over s}} \right]} \over {0.35\left[ {{\rm{f}}{{\rm{t}}^2}} \right]}} = 3.18{{ft} \over s} = 3.18\,fps$$ |
Page Number: 566 Example 44—US Customary Units, second equation from the top, line 2 For: $$1.73{{ib} \over {i{n^2}}}$$ Read: $$1.73{{lb} \over {i{n^2}}}$$ |
Page Number: 638 Example 73, equation, line 3 For: 454.5 g Read: 453.6 g |
Page Number: 638 Example 73, equation, line 4 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 651 Answer Key (corrected version), Chapter 4, “Instrumentation and Control” 1. treatment process, targeted effluent water quality standards |
Page Number: 652 Answer Key (corrected version), Chapter 4, “Instrumentation and Control” (continued) 13. d |
Page Number: 666 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 94 Second equation under “CONTAINER 1” For: 6.24 Read: 62.4 |
Page Number: 107 Example 20, second equation, line 1 For: $${C_{mix}} = {{{C_1} \times {V_1} + {C_2} \times {V_2}} \over {{V_1} \times {V_2}}}$$ Read: $${C_{mix}} = {{{C_1} \times {V_1} + {C_2} \times {V_2}} \over {{V_1} + {V_2}}}$$ |
Page Number: 159 Question 19, response c For: III Read: B |
Page Number: 238 Last paragraph, line 3 For: V-notch weir (3.33) Read: V-notch weir (Figure 3.33) |
Page Number: 260 Example 8—Metric, first equation after “Calculate the flow rate …,” line 2 For: 0.071.5 Read: 0.0751.5 |
Page Number: 283 Last item under “where,” For: td = number of days the cooling tower is operation per year Read: td = number of days the cooling tower is in operation per year |
Page Number: 283 Last paragraph, line 2 For: temperature Read: temperatures |
Page Number: 292 Question 37, response b For: 23.9 gal/min Read: 19.4 gal/min |
Page Number: 304 “Check Your Understanding,” question 4 For: operator Read: inspector |
Page Number: 310 “Check Your Understanding,” question 1 For: operator Read: inspector |
Page Number: 506 Question 38, responses a through d For: a. 8,000 gal/d Read: a. 423 min |
Page Number: 238 Table 5.6, Symptom 7, “Leakage at the Toe of the Mound,” “Explanation,” line 1 For: Figure 5.32 Read: Figure 5.31 |
Page Number: 7 Section 1.2.1.3, “Groundwater,” paragraph 1, line 3 For: Figure 1.1 Read: Figure 1.2 |
Page Number: 14 Sidebar definition for “detention time,” equation For: Time [d] Read: Time [h] |
Page Number: 19 Table 1.2, “Primary drinking water regulations,” “Inorganic Chemicals” For: Arsenic 0.05 mg/L Read: Arsenic 0.01 mg/L |
Page Number: 37 Figure 2.4 caption Delete the right parenthesis after “solids.” |
Page Number: 87 Paragraph 2, line 3 For: \({\raise0.5ex\hbox{$\scriptstyle {22}$} Read: \(2{\raise0.5ex\hbox{$\scriptstyle 2$} |
Page Number: 128 Example 5, paragraph 1, line 1 For: 60-Hz submersible Read: 60 Hz submersible |
Page Number: 134 Method 2, number 1 equation, line 1 For: 0.875 Read: 0.785 |
Page Number: 160 Section 2.12, “Math Assignment,” bullet 3 For: • A.3, “Volume” (A.5.3.1 through A.5.3.6) Read: • A.5.3, “Volume” (A.5.3.1 through A.5.3.6) |
Page Number: 187 Figure 3.7 caption, credit line For: Muerer Read: Meurer |
Page Number: 214 Information sidebar, line 4 Add a period to the end of the sentence. |
Page Number: 214 Second bulleted list, bullet 3, line 2 For: short-ci-rcuiting Read: short-circuiting |
Page Number: 275 Question 8, responses a through d For: a. 0.26 MGD Read: a. 26 lb/d |
Page Number: 510 “WHAT IS TESTED” section, table column head For: Common Range, NTU Read: Common Range, pH |
Page Number: 552 Figure 6.30, bottom of figure, items to the right of “where” For: xs Read: xs For: nj Read: nj For: zj Read: zj For: zs Read: zs |
Page Number: 554 Last paragraph, line 3 For: you can you can Read: you can |
Page Number: 554 Last paragraph, lines 5 through 7. For: For instance, if you dilute the sample in Example 4 above by 100 before running the three-dilution test, you can expect results like 4-3-3 or 4-4-2 or 5-1-1, all of which can be read directly from Table 6.4. Read: For instance, if you dilute the sample in Example 22 by 100 before running the three-dilution test, you would expect to get a 5-1-1 result, which can be read directly from Table 6.4. |
Page Number: 579 Section 6.6, “Math Assignment,” bullets 2 and 3 For: • A.6.10, “Laboratory Procedures” (English system) Read: • A.9.6, “Laboratory Procedures” (English system) |
Page Number: 588 Section 7.2.1.2, “System Growth Rate,” line 5 For: forecast Read: forecasted |
Page Number: 615 Example 8, number 5 equation For: \[{\rm{t}}\left[ {{\rm{yr}}} \right]\, = {{{\rm{Initial}}\,{\rm{Cost}}\left[ $ \right]} \over {{\rm{Cost}}\,{\rm{Savings}}\left[ {{$ \over {{\rm{yr}}}}} \right]}} = {{$ 9,730.00} \over {$ 1,656.12}} = 5.9\,{\rm{yr}}\] Read: \[{\rm{t}}\left[ {{\rm{yr}}} \right]\, = {{{\rm{Initial}}\,{\rm{Cost}}\left[ $ \right]} \over {{\rm{Cost}}\,{\rm{Savings}}\left[ {{$ \over {{\rm{yr}}}}} \right]}} = {{$ 9,730.00} \over {{{$ 1,656.12} \over {{\rm{yr}}}}}} = 5.9\,{\rm{yr}}\] |
Page Number: 662 Section A.5.7, “Velocity and Flow Rate,” equation in pink box after first paragraph For: V Read: v |
Page Number: 662 Example 30 equation For: V Read: v |
Page Number: 662 Example 31 equation For: V Read: v |
Page Number: 667 Equations under the graphic For: p0 Read: p0 For: p1 Read: p1 For: p2 Read: p2 For: p3 Read: p3 For: p4 Read: p4 |
Page Number: 668 Example 38, equation below paragraph 3 For: Pavg Read: pavg |
Page Number: 673 “Writing Numbers in the SI System” sidebar, paragraph 1, line 2 For: based on SI system Read: based on the SI system |
Page Number: 684 Section A.7.6, “Pump Characteristics,” paragraph 2, lines 5 and 6 For: If plotted on a graph, the curve appears as follows: Read: If plotted on a graph, the curve appears as indicated in the Head/Capacity graph. |
Page Number: 690 Section A.7.8 title For: Pump Speed-Performance Relationships Read: Pump Speed–Performance Relationships |
Page Number: 699 Section A.8.3.1, “Graphs and Charts,” paragraph 2, line 11 For: yaxis Read: y-axis |
Page Number: 703 Paragraph above the second graph, lines 5 and 6 For: the dark line in the following figure Read: the red line in the following graph |
Page Number: 703 Paragraph above the second graph, line 7 For: gray line Read: blue line |
Page Number: 703 Graph 2 The vertical axis (y-axis) should be labeled “Mean Daily Flow (MGD)” and the horizontal axis (x-axis) should be labeled “Year.” |
Page Number: 708 First pink box, number 7 equation For: 100 mI Read: 100mL |
Page Number: 716 Example 63, equation, line 3 For: 454.5 g Read: 453.6 g |
Page Number: 716 Example 63, equation, line 4 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 724 Example 67 equation For: \[{\rm{r}} = {{{{\rm{S}}_{{\rm{XY}}}}} \over {\sqrt {{{\rm{S}}_{{\rm{XX}}}}{{\rm{S}}_{{\rm{YY}}}}} }} = {{34} \over {\sqrt {28 \times } \,119}} = 0.59\] Read: \[{\rm{r}} = {{{{\rm{S}}_{{\rm{XY}}}}} \over {\sqrt {{{\rm{S}}_{{\rm{XX}}}}{{\rm{S}}_{{\rm{YY}}}}} }} = {{34} \over {\sqrt {28 \times 119} }} = 0.59\] |
Page Number: 729 Example 11, number 2 equation For: 300 gpm Read: 3,000 gpm |
Page Number: 735 Example 3, number 3 For: kilograms per day (lb/d) Read: kilograms per day (kg/d) |
Page Number: 735 Example 3, number 3 equation, line 2 For: 62.4 lb/d Read: 62.4 kg/d |
Page Number: 745 Answer Key (corrected version), Chapter 4, “Disinfection” 1. a |
Page Number: 746 Answer Key (corrected version), Chapter 4, “Disinfection” (continued) 26. c |
Page Number: 746 Answer Key, Chapter 5, “Safety,” answer 10 For: c Read: b |
Page Number: 746 Answer Key, Chapter 7, “Introduction to Small System Management,” answer 22 For: d Read: multiply, divide |
Page Number: 746 Answer Key, Chapter 7, “Introduction to Small System Management,” answer 29 For: 398.00 Read: $398.00/mo |
Page Number: 758 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 787 “OSH Act of 1970 (Occupational Safety and Health Act of 1970),” page listing For: 500 Read: 439, 500 |
Page Number: 55 Figure 2.1, “Treatment of segregated metal finishing wastestreams” For: From metal plating plating facility Read: From metal plating facility For: pH adjust tank Read: pH adjustment tank |
Page Number: 57 Table 2.3, “Conventional chemical treatment methods,” missing table note aAdapted from Metal Finishing Plating Buyers Guide, TMSI Contractors |
Page Number: 67 Line 8 (under the first pink box) For: water solution Read: water solutions |
Page Number: 76 Example 13, line 1 For: 4 percent or 1 normal sodium hydroxide solution Read: 4 percent (1 N) sodium hydroxide solution |
Page Number: 76 Example 13, sentence before the equation For: Convert 4 percent to milligrams per liter. Read: Convert the 4 percent sodium hydroxide solution to milligrams per liter. |
Page Number: 108 Example 21, line 1 For: 1.0 Read: 1 |
Page Number: 136 Example 1, paragraph 1, line 4 For: 2 N Read: 2 N |
Page Number: 136 Example 1, number 1 For: Determine normality Read: Determine the normality |
Page Number: 137 Example 3, number 1 For: Determine normality Read: Determine the normality |
Page Number: 139 Example 6, line 3 For: 1 N Read: 1 N |
Page Number: 144 Example 12, number 3 equation, line 1 For: $${\rm{t}}\left[ h \right] = {{{{\rm{M}}_{{H_2}S{O_4}}}\left[ {lb} \right] \times {{gal} \over {8.34\,lb}} \times 100\% } \over {{{\rm{F}}_{{H_2}S{O_4}}}\left[ {{{gal} \over h}} \right]{{\rm{S}}_{{H_2}S{O_4}}}\left[ \% \right]}}$$ Read: $${\rm{t}}\left[ h \right] = {{{{\rm{M}}_{{H_2}S{O_4}}}\left[ {lb} \right] \times {{gal} \over {8.34\,lb}} \times 100\% } \over {{{\rm{F}}_{{H_2}S{O_4}}}\left[ {{{gal} \over h}} \right] \times {{\rm{S}}_{{H_2}S{O_4}}}\left[ \% \right]}}$$
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Page Number: 153 Example 22, number 2 equation, line 3 For: 3.15 Read: 31.5 |
Page Number: 154 Equation in first pink box For: 8.34 gal Read: 8.34 lb |
Page Number: 154 Equation in second pink box For: VSludge (2 instances) Read: Vsludge For: SSludge (2 instances) Read: Ssludge |
Page Number: 75 Figure 1.18, lower right corner, paragraph under “Detection,” line 6 For: contaminantion Read: contamination |
Page Number: 94 Example 2, Unknown column, after line 1 Insert: Enondebt = nondebt expense |
Page Number: 95 Example 2, number 2 equation For: OE[$] Read: TOE[$] |
Page Number: 95 Example 2, number 2 equation For: $625,300 Read: $612,100 For: $1,353,700 Read: $1,366,900 |
Page Number: 95 Example 2, number 3 equation For: $1,353,700 Read: $1,366,900 For: 1.72 Read: 1.7 |
Page Number: 106 Table 2.4, “List and Description of Factors Commonly Used to Evaluate Asset Condition,” “Structural Defects and Physical Condition,” line 1 For: a more likely to fail Read: are more likely to fail |
Page Number: 106 Table 2.4, “List and Description of Factors Commonly Used to Evaluate Asset Condition,” “Quality of Materials and Construction,” lines 3–5 For: For example, improperly sloped and bedded sewer lines will be impeded gravity flow and prevent the asset from adequately performing its intended function. Read: For example, improperly sloped and bedded sewer lines will experience impeded gravity flow that will prevent the asset from adequately performing its intended function. |
Page Number: 13 Table 1.2, “Primary drinking water regulations,” “Inorganic Chemicals” For: Arsenic 0.05 mg/L Read: Arsenic 0.01 mg/L |
Page Number: 17 The page number (17) and running head (“Water Quality in Distribution Systems”) are missing. |
Page Number: 55 Table 2.2, “Troubleshooting water quality problems in storage tanks and distribution systems” Replace the table with:
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Page Number: 127 Example 6, lines 3 through 5 For: According to Table 3.2, the allowable leakage is 30 gallons per day per mile of pipe per inch (gal/d · mi · in) of diameter. Read: The allowable leakage is 30 gallons per day per mile of pipe per inch (gal/d · mi · in) of diameter. |
Page Number: 128 Example 7, lines 3 through 5 For: According to Table 3.2, the allowable leakage is 1.45 gallons per hour for each 100 joints (gal/h · 100 joints) of 6-inch (in) pipe. Read: The allowable leakage is 1.45 gallons per hour for each 100 joints (gal/h · 100 joints) of 6-inch (in) pipe.
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Page Number: 147 Section 3.8.1, “Displacement Meters,” paragraph 1, line 3 For: 15 mm Read: 15 cm |
Page Number: 165 Question 16, lines 4 through 6 For: According to Table 3.1, the allowable leakage is 30 gallons per day per mile of pipe per inch of diameter. Read: The allowable leakage is 30 gallons per day per mile of pipe per inch of diameter. |
Page Number: 252 Section 4.9.1, “Disinfection of Mains,” paragraph 2, number 1, line 1 For: Liquid chlorine contains 100 percent available chlorine and is packaged in 100-pound, 150-pound, or 1-ton (45, 68, or 909 kg) steel cylinders. Read: Gaseous chlorine contains 100 percent available chlorine and is packaged in 100-pound, 150-pound, or 1-ton (45, 68, or 909 kg) steel cylinders. |
Page Number: 295 Section 5.3.3.2, “Reactions with Water,” first pink box, line 1 For: Hypochloric Acid Read: Hydrochloric Acid |
Page Number: 464 Number 3 (toward the bottom of the page), line 2 For: Table 6.8 Read: Table 6.7 |
Page Number: 538 Section 7.10.3.2 title For: Cryptosporidium in water systems Read: Cryptosporidium in Water Systems |
Page Number: 585 “Appendix Outline,” A.9 and A.10 For: A.9 Typical Water Treatment Plant Problems (English System) 672 Read: A.9 Typical Water Distribution System Problems (English System) 672 |
Page Number: 607 “Rounding” sidebar (top right), paragraph 1, line 14 For: tenths Read: tens |
Page Number: 647 Section A.8.3.1, “Graphs and Charts,” paragraph 2, line 11 For: yaxis Read: y-axis |
Page Number: 664 Example 63, equation, line 3 For: 454.5 g Read: 453.6 g |
Page Number: 664 Example 63, equation, line 4 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 688 Example 3, number 3 For: kilograms per day (lb/d) Read: kilograms per day (kg/d) |
Page Number: 688 Example 3, number 3 equation, line 2 For: 62 lb/d Read: 62 kg/d |
Page Number: 716 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 5 Table 1.2, “Primary Drinking Water Regulations,” “Inorganic Chemicals” For: Arsenic 0.05 mg/L Read: Arsenic 0.01 mg/L |
Page Number: 20 Table 1.5, “Chemical Types and Characteristics,” “Coagulants” Replace the “Coagulants” section with: |
Page Number: 67 Sidebar definition for “detention time,” equation For: Detention Time [d] Read: Detention Time [h] |
Page Number: 97 Equation at bottom of page For: Volume[g] Read: Volume[gal] |
Page Number: 133 Sidebar definition for “detention time,” equation For: Detention Time [d] Read: Detention Time [h] |
Page Number: 150 Figure 3.12, “Plot of settled water turbidity vs. cationic polymer dosage” The vertical axis (y-axis) should be labeled “Settled Water Turbidity, TU” and the horizontal axis (x-axis) should be labeled “Cationic Polymer Dosage, mg/L.” |
Page Number: 161 Sidebar equation For: –2.1 lb Read: 2.1 lb |
Page Number: 174 Last paragraph, line 3 For: la-boratory-grade Read: laboratory-grade |
Page Number: 188 Example 18, Known column For: Volumes of Setled Microsand Read: Volumes of Settled Microsand |
Page Number: 189 Example 18, number 2 equation, middle portion For: 1,7000 [gal/L] Read: 1,700 [g/L] |
Page Number: 189 Example 18, number 2 equation, answer For: 2.6 gal/L Read: 2.6 g/L |
Page Number: 202 Question 23, responses 1 through 4 For: 1. 1.9 gal/L Read: 1. 1.9 g/L |
Page Number: 203 Chapter Outline For: Chaper Review 256 Read: Chapter Review 256 |
Page Number: 204 Section 4.1, “Presedimentation,” paragraph 4, line 6 For: there servoir Read: the reservoir |
Page Number: 213 Section 4.3.1.3, “Circular and Square Basins,” line 6 For: problem Read: problems |
Page Number: 221 Figure 4.21, “Flow-through times for various types of sedimentation basins” The vertical axis (y-axis) should be labeled “Actual Dye Concentration/Concentration If All Dye Mixed in Entire Basin” and the horizontal axis (x-axis) should be labeled “Actual Time/Calculated Detention Time.” |
Page Number: 236 Number 3 equation, line 1 For: Alum Needing Alkalinity = [mg/L] Total Alum [mg/L] Read: Alum Needing Alkalinity [mg/L] = Total Alum [mg/L] |
Page Number: 237 Example 8 equation For: $$\eqalign{ Read: $$\eqalign{ |
Page Number: 257 Question 10, line 3 For: 2.0 GPM Read: 2.0 MGD |
Page Number: 281 Figure 5.12 note, line 1 For: headloss Read: head loss |
Page Number: 282 Figure 5.13, “Typical filter effluent turbidity data” The horizontal axis (x-axis) should be labeled “Filtration Time (hours).” |
Page Number: 313 Figure 5.19, “Illustration of cumulative particle counts and differential particle counts” For: 2 - 5 (2 instances) Read: 2–5 For: 5 - 20 (2 instances) Read: 5–20 For: Cummulative Read: Cumulative |
Page Number: 334 Line between the first and second pink boxes For: where Read: or |
Page Number: 367 Example 3, number 4 For: gallons (g) Read: gallons (gal) |
Page Number: 393 Section 6.7.2, “Operation,” line 1 For: chloride dioxide generator Read: chlorine dioxide generator |
Page Number: 424 Figure 6.29, top of graphic For: Mixed Oxidant Solution Read: Mixed-Oxidant Solution For: Elecrtrolytic Cell Read: Electrolytic Cell |
Page Number: 426 Example 7, number 2, last line of note For: one in Example 7 Read: one |
Page Number: 426 Example 8, Known column, line 1 For: F = Chlorinator Setting = 7.2 lb/d Read: Clfeed = Chlorinator Setting = 7.2 lb/d |
Page Number: 426 Example 8, end of Known column Insert: t = Time = 100 h |
Page Number: 427 Example 8, number 1 equation, line 1 For: T Read: t |
Page Number: 430 Example 12, number 2 For: chlorine required (Clrequired) Read: chlorine required (Clrequired) |
Page Number: 436 Question 35, responses 1 through 4 For: 1. 11.5 lb/d Read: 1. 1.6 % |
Page Number: 440 Sidebar definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 451 Chemical reation (cathode reaction) in the pink box, line 2 For: $${{\rm{O}}_2} + 4\,{{\rm{e}}^ - } + 2\,{{\rm{H}}_2}{\rm{O}} \to 4\,{\rm{OH}}$$ Read: $${{\rm{O}}_2} + 4\,{{\rm{e}}^ - } + 2\,{{\rm{H}}_2}{\rm{O}} \to 4\,{\rm{O}}{{\rm{H}}^ - }$$ |
Page Number: 458 Table 7.4, note below table, line 1 For: Langelier Index = pH − pHS Read: Langelier Index = pH − pHS |
Page Number: 482 Section 7.8, “Math Assignment” Delete bullet 2: A.7, “Pumps” |
Page Number: 543 Figure 9.1 note For: poper Read: proper |
Page Number: 547 Example 9 Insert sentence at the end of paragraph 1: Because you get 1 Na+ for every NaCl, 0.025 mol/L of Na+ requires 0.025 mol/L of NaCl. |
Page Number: 547 Example 9 Delete the last paragraph. |
Page Number: 547 Section 9.2.3.3, “Normality,” items under “Where,” For: M = Molar Concentration (Molarity) Read: N = Normality |
Page Number: 547 Sidebar definition for “N (normal)” (corrected version) A normal solution contains 1 gram equivalent weight of reactant (compound) per liter of solution. The equivalent weight of an acid is that weight that contains 1 gram atomic weight of ionizable hydrogen or its chemical equivalent. For example, the equivalent weight of sulfuric acid (H2SO4) is 49 (98 divided by 2 because there are 2 replaceable hydrogen ions). A 1.0 N solution of sulfuric acid would consist of 49 grams of H2SO4 dissolved in enough water to make 1 liter of solution. |
Page Number: 548 Example 10 Replace Example 10 with: How much sodium carbonate (Na2CO3) would you need to make 1.00 L of 0.15 N solution? For sodium carbonate, z is equal to 2 because 2 hydrogens can replace the sodium atoms on the molecule (i.e., these are hydrogen reaction sites). The molarity (M) of the desired solution is: $$M = {N \over {\rm{z}}} = {{0.30} \over 2} = 0.15{{{\rm{mol}}} \over {\rm{L}}}$$ The molecular weight (MW) of Na2CO3 is: $${\rm{MW}} = \left( {2 \times 23} \right) + 12 + \left( {3 \times 16} \right) = 106{{\rm{g}} \over {{\rm{mol}}}}$$ Therefore, the mass needed for a 0.15 M solution is: $$0.15\left[ {{{{\rm{mol}}} \over {\rm{L}}}} \right] \times 106\left[ {{{\rm{g}} \over {{\rm{mol}}}}} \right] = 15.9{{\rm{g}} \over {\rm{L}}}$$ |
Page Number: 551 “Corrosive Materials” section, “Miscellaneous Corrosive Chemicals” subsection, line 1 Insert a right parenthesis between “ferric chloride” and the comma that follows. |
Page Number: 560 “WHAT IS TESTED” section, table column head For: Common Range, NTU Read: Common Range, pH |
Page Number: 564 Example 12, third equation For: \({{\rm{V}}_{{\rm{after}}\,{\rm{dilution}}}} = {{\rm{V}}_{{\rm{standard}}}} - {{\rm{V}}_{{\rm{dilution}}\,{\rm{water}}}}\) Read: \({{\rm{V}}_{{\rm{after}}\,{\rm{dilution}}}} = {{\rm{V}}_{{\rm{standard}}}} + {{\rm{V}}_{{\rm{dilution}}\,{\rm{water}}}}\) |
Page Number: 568 “Where” list under the equation in the pink box, second item For: \({N_{{\rm{N}}{{\rm{a}}_2}{\rm{C}}{{\rm{O}}_2}}}\) Read: \({N_{{\rm{N}}{{\rm{a}}_2}{\rm{C}}{{\rm{O}}_3}}}\) |
Page Number: 569 Example 13, number 1, third equation For: \[{{\rm{A}}_{\rm{p}}} = {10^{ - 4}}N \times 50,000{{{\rm{mg}}} \over N} = 5{{{\rm{mg}}} \over {\rm{L}}}\] Read: \[{{\rm{A}}_{\rm{p}}} = {10^{ - 4}}N \times 50,000{{{\rm{mg}}} \over {{\rm{L}} \cdot N}} = 5{{{\rm{mg}}} \over {\rm{L}}}\] |
Page Number: 569 Example 13, number 2, second equation For: $${{\rm{A}}_{\rm{t}}} = 0.00136{\rm{ }}N \times 50,000{{{\rm{mg}}} \over N} = 68{{{\rm{mg}}} \over {\rm{L}}}$$ Read: $${{\rm{A}}_{\rm{t}}} = 0.00136{\rm{ }}N \times 50,000{{mg} \over {{\rm{L}} \cdot N}} = 68{{{\rm{mg}}} \over {\rm{L}}}$$ |
Page Number: 572 Example 15 Replace Example 15 with: To estimate the hardness of a water sample from a well, a sample of that well water was collected for a titration test. The results from the titrant standardization were as follows: Vstandard = Volume of standard CaCO3 solution = 25 mL The results from the titration test of the well water sample were as follows: Vsample = volume of the sample = 25 mL Estimate the hardness of the well water in milligrams per liter as CaCO3. Solution: This is a two-step process: First, use a standard solution of CaCO3 of 1 mg/mL concentration to determine how much titrant (EDTA) is needed. This is a buffer solution (B). Second, use the water sample titration information to estimate the hardness. So, to estimate how many milligrams are equivalent to 1 milliliter of EDTA solution with the 1 mg/mL standard solution of CaCO3, use the following equation: \(\eqalign{& B\left[ {{{mg\,CaC{O_3}} \over {mL\,EDTA}}} \right] & = {{{V_{{\rm{standard}}}}\left[ {mL} \right] \times {C_{{\rm{standard}}}}\left[ {{{mg} \over {mL}}} \right]} \over {{V_{EDTA}}\left[ {mL} \right]}} \cr & & = {{25\left[ {mL} \right] \times 1.00\left[ {{{mg} \over {mL}}} \right]} \over {24.3\left[ {mL} \right]}} \cr & & = 1.03{{mg\,CaC{O_3}} \over {mL\,EDTA}} \cr} \) Then, using the sample titration results, calculate hardness (H) using the following equation: \(\eqalign{ |
Page Number: 575 b. Reagents, paragraph following numbered list, line 2 For: manganeses Read: manganese |
Page Number: 604 Last paragraph on page (between Example 23 and Figure 9.32) For: Interpreting the five-dilution test is a bit tricky, but you should not have to do it often. After you have determined the general range of coliform counts for a water source, in subsequent samples you can you can dilute the original to get into the range of counts covered by a three-dilution test. For instance, if you dilute the sample in Example 4 above by 100 before running the three-dilution test, you can expect results like 4-3-3 or 4-4-2 or 5-1-1, all of which can be read directly from Table 9.4. Multiply the MPN Index by 100 to account for the initial dilution of the sample. Read: Interpreting the five-dilution test is a bit tricky, but you should not have to do it often. After you have determined the general range of coliform counts for a water source, in subsequent samples you can dilute the original to get into the range of counts covered by a three-dilution test. For instance, if you dilute the sample in Example 22 by 100 before running the three-dilution test, you would expect to get a 5-1-1 result, which can be read directly from Table 9.4. Multiply the MPN Index by 100 to account for the initial dilution of the sample. |
Page Number: 628 Table 9.8, “Chloride,” “Vol. Req. (mL)” column For: 50 Read: 500 |
Page Number: 628 Table 9.8, “Chlorine, Total Residual,” “Vol. Req. (mL)” column For: 500 Read: 50 |
Page Number: 633 Key Terms For: total dynamic head (TDM) Read: total dynamic head (TDH) |
Page Number: 642 Example 3, paragraph 2, line 1 For: indicated Read: indicate
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Page Number: 667 Example 41, last equation For: HP Read: Hp |
Page Number: 668 Paragraph 5 (last paragraph of section), line 2 For: kW-hr Read: kWh |
Page Number: 669 “Writing Numbers in the SI System” sidebar, paragraph 1 For: Which of the following is the correct way to write the number based on SI system? Read: Which of the following is the correct way to write the number based on the SI system?
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Page Number: 685 Paragraph 4, line 3 For: wireto-water efficiency Read: wire-to-water efficiency |
Page Number: 686 Section A.7.8 title For: Pump Speed-Performance Relationships Read: Pump Speed–Performance Relationships |
Page Number: 695 Section A.8.3.1, “Graphs and Charts,” paragraph 2, line 11 For: yaxis Read: y-axis |
Page Number: 712 Example 63, equation, line 3 For: 454.5 g Read: 453.6 g |
Page Number: 712 Example 63, equation, line 4 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 718 Table at the bottom of the page, column header for third column For: Dependent Variable (Bod) Equations Read: Dependent Variable (BOD) Equations |
Page Number: 770 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |
Page Number: 775 Glossary definition for “N (normal)” (corrected version) A normal solution contains 1 gram equivalent weight of reactant (compound) per liter of solution. The equivalent weight of an acid is that weight that contains 1 gram atomic weight of ionizable hydrogen or its chemical equivalent. For example, the equivalent weight of sulfuric acid (H2SO4) is 49 (98 divided by 2 because there are 2 replaceable hydrogen ions). A 1.0 N solution of sulfuric acid would consist of 49 grams of H2SO4 dissolved in enough water to make 1 liter of solution. |
Page Number: 801 For: Giardia lamblia Read: Giardia lamblia |
Page Number: 337 Figure 5.1, top of graphic For: MOLECUAR RANGE Read: MOLECULAR RANGE For: MACRO RANGE Read: MICRO RANGE For: MICRO PARTICLE RANGE Read: MACRO PARTICLE RANGE |
Page Number: 812 Example 63, equation, line 4 For: 454.5 g Read: 453.6 g |
Page Number: 812 Example 63, equation, line 5 For: 1,492 lb/d Read 1,494 lb/d |
Page Number: 836 Glossary definition for “galvanic cell” (revised) An electrolytic cell capable of producing electric energy by electrochemical reaction. The decomposition of materials in the cell causes an electric (electron) current to flow from anode to cathode. |