Math for Distribution System Operators: Practice Problems to Prepare for Water Treatment Operator Certification Exams

by John Giorgi

Overview

Most water operators cite mathematics as the subject giving them the most difficulty on their operator certification exams, as well as on the job. This math study text is designed to help water distribution operators improve their math skills, pass certification exams, perform their jobs better, and advance their careers.

The book provides hundreds of math problems in all areas of water distribution operations, from beginner to advanced. Each problem is immediately followed by the answer and the method for solving the problem. Many problems include explanatory comments to aid your understanding of the mathematical logic behind the solution.

Appendixes provide common conversion factors, a summary of the equations used in the book, chemistry tables, maximum contaminant level charts, and abbreviations to which you can refer when working out the problems.

Take your operator examswith confidence and improve your on-the-job performance.

Product Details

ISBN-13:	9781583214558
Publisher:	American Water Works Association
Publication date:	03/13/2007
Edition description:	New Edition
Pages:	300
Product dimensions:	8.50(w) x 11.00(h) x 0.64(d)

Table of Contents

List of Tables     xi
Acknowledgments     xiii
Preface     xv
Introduction     xvii
Distribution Grade 1     1
Conversion Problems     1
Percent Conversions     4
Temperature Conversions     5
Percent and Parts per Million Conversion Problems     6
Average Calculations     7
Percent Calculations     9
Solving Ratios and Determining Proportions     11
Perimeter Determinations     13
Circumference, Radii, and Diameter Determinations     14
Pressure Problems     16
Area Problems     18
Volume Determinations     21
Flow Problems     23
Detention Time Calculations     26
Flushing Time Problems     28
Density Problems     30
Specific Gravity of Liquids     32
Meter Accuracy Calculations     33
Calculations for Chlorine Demand and Residual     33
Dosage Calculations     34
Distribution Grade 1 Test     44
Solutions to Distribution Grade 1 Test     46
Distribution Grade 2     51
Conversion Problems     51
Temperature Conversions     54
Percent and Parts per Million Conversion Problems     55
Average Calculations     56
Percent Calculations     57
Percent Removal Calculations     58
Percent Mixture     59
Circumference, Radii, and Diameter Determination     60
Area Problems     61
Volume Determinations     64
Detention Time Calculations     69
Watershed Supply Calculations     72
Pressure Problems     73
Flow Problems     77
Density Calculations     79
Specific Gravity of Liquids     81
Meter Accuracy Calculations     82
Calculations for Chlorine Demand and Residual     83
Dosage Calculations     84
Pump Discharge Problems     90
Pumping Calculations     91
Specific Yield     94
Water Consumption     95
Distribution Grade 2 Test     96
Solutions to Distribution Grade 2 Test     99
Distribution Grade 3     105
Conversion Problems     105
Temperature Conversions     106
Percent and Parts per Million Conversion Problems      107
Percent Calculations     108
Percent Removal Calculations     109
Area Problems     111
Volume Determinations     114
Average Calculations     120
Detention Time Calculations     121
Watershed Supply Calculations     124
Pressure Problems     125
Flow Problems     126
Flushing Time Problems     130
Density Calculations     131
Specific Gravity of Liquids     133
Meter Accuracy Calculations     134
Ratio Problems     134
Calculations for Chlorine Dose, Demand, and Residual     136
Dosage Problems     137
Percent Mixture Problems     147
Specific Yield and Drawdown Calculations     149
Well Drawdown Calculations     150
Pump Discharge Problems     151
Pumping Calculations     152
Water Rate Service Problems     157
Distribution Grade 3 Test     159
Solutions to Distribution Grade 3 Test     162
Distribution Grade 4     169
Percent Calculations     169
Volume Determinations     170
Detention Time Calculations     172
Pressure Problems     174
Meter Flow Determinations     179
Flow Problems     180
Flushing Time Problems     184
Density Calculations     187
Specific Gravity of Liquids     188
Ratio Problems     189
Dosage Problems     190
Corrosion Problems     207
Specific Yield and Drawdown Calculations     207
Percent Mixture Problems     209
Determining Percent Strength or Concentration of a Solution     213
Pumping Discharge Problems     215
Pumping Calculations     217
Net Positive Suction Head Calculations     224
Estimating Water Flow from a Pipe     225
Calculating the 90th Percentile for Lead and Copper     229
Hydraulic Press Calculations     230
Kilowatt Determinations     232
Hazen-Williams Determinations     233
Corrosion Rates Based on Coupons     238
Milliamp Signal Calculations     240
Distribution Grade 4 Test     241
Solutions to Distribution Grade 4 Math Test A     244
Appendixes     251
Bibliography     277
Additional Resources     279