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RecommendedRecommended Standards Standards for …

2018 Edition Recommended Standards for Water Works Great Lakes Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers Illinois Indiana Iowa Michigan Minnesota Missouri New York Ohio Ontario Pennsylvania Wisconsin Recommended Standards For Water Works 2018 Edition Policies for the Review and Approval of Plans and Specifications for Public Water Supplies A Report of the Water Supply Committee of the Great Lakes--Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers MEMBER STATES AND PROVINCE. Illinois Indiana Iowa Michigan Minnesota Missouri New York Ohio Ontario Pennsylvania Wisconsin Published by: Minnesota's Bookstore Communications Media Division 660 Olive Street St.

4.3.3 Diatomaceous earth filtration 52 4.3.4 Slow sand filters 55 4.3.5 Direct filtration 57 4.3.6 Deep bed rapid rate gravity filters 59 4.3.7 Aerobic Bio-filtration of Surface Water 59 4.4 DISINFECTION 62

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1 2018 Edition Recommended Standards for Water Works Great Lakes Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers Illinois Indiana Iowa Michigan Minnesota Missouri New York Ohio Ontario Pennsylvania Wisconsin Recommended Standards For Water Works 2018 Edition Policies for the Review and Approval of Plans and Specifications for Public Water Supplies A Report of the Water Supply Committee of the Great Lakes--Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers MEMBER STATES AND PROVINCE. Illinois Indiana Iowa Michigan Minnesota Missouri New York Ohio Ontario Pennsylvania Wisconsin Published by: Minnesota's Bookstore Communications Media Division 660 Olive Street St.

2 Paul, MN 55155. Copyright 2018 by the Great Lakes - Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers This book, or portions thereof, may be reproduced without permission from the author if proper credit is given. This Page Intentionally Left Blank TABLE OF CONTENTS. FOREWORD i POLICY STATEMENT ON PRE-ENGINEERED WATER TREATMENT PLANTS iii POLICY STATEMENT ON AUTOMATED/UNATTENDED OPERATION OF SURFACE WATER. TREATMENT PLANTS v POLICY STATEMENT ON BAG AND CARTRIDGE FILTERS FOR PUBLIC WATER. SUPPLIES vii INTERIM STANDARD ON ULTRAVIOLET DISINFECTION TREATMENT FOR PUBLIC. WATER SUPPLIES x POLICY STATEMENT ON AEROBIC BIOLOGICAL TREATMENT OF GROUNDWATER. SOURCES FOR PUBLIC WATER SUPPLIES xv POLICY STATEMENT ON ANOXIC BIOLOGICAL TREATMENT FOR PUBLIC.

3 WATER SUPPLIES xviii INTERIM STANDARD ON ARSENIC REMOVAL OF GROUNDWATER SOURCES FOR. PUBLIC WATER SUPPLIES xxii POLICY STATEMENT ON DESIGN CONSIDERATIONS FOR THE OPTIMIZATION OF. RAPID RATE filtration AT SURFACE WATER TREATMENT PLANTS xxiv POLICY STATEMENT ON AQUIFER STORAGE AND RECOVERY FOR PUBLIC. WATER SUPPLIES xxviii PART 1 - SUBMISSION OF PLANS. GENERAL 1. ENGINEER'S REPORT 1. General Information 2. Extent of water works system 2. Justification of project 2. Soil, groundwater conditions, and foundation problems 2. Water use data 2. Flow requirements 3. Sources of water supply 3. Proposed treatment processes 4. Sewerage system available 4. Waste disposal 4. Automation 4. Project sites 4. Financing 5. Future extensions 5. Pumping Facilities 5.

4 Storage Facilities 5. Security, Contingency Planning, and Emergency Preparedness 5. PLANS 6. General layout 6. Detailed plans 6. SPECIFICATIONS 8. DESIGN CRITERIA 8. REVISIONS TO APPROVED PLANS 8. ADDITIONAL INFORMATION REQUIRED 9. PART 2 - GENERAL DESIGN CONSIDERATIONS. GENERAL 10. DESIGN BASIS 10. PLANT LAYOUT 10. BUILDING LAYOUT 10. LOCATION OF STRUCTURES 11. ELECTRICAL CONTROLS 11. STAND-BY POWER 11. SHOP SPACE AND STORAGE 11. LABORATORY FACILITIES 11. TESTING EQUIPMENT 11. PHYSICAL FACILITIES 12. MONITORING EQUIPMENT 12. SAMPLE TAPS 12. FACILITY WATER SUPPLY 13. WALL CASTINGS 13. METERS 13. PIPING COLOR CODE 13. DISINFECTION 14. OPERATION AND MAINTENANCE MANUAL 14. OPERATOR INSTRUCTION 14. SAFETY 14. SECURITY 14. FLOOD PROTECTION 16.

5 CHEMICALS AND WATER CONTACT MATERIALS 16. OTHER CONSIDERATIONS 16. PART 3 - SOURCE DEVELOPMENT. GENERAL 17. SURFACE WATER 17. Quantity 17. Quality 17. Minimum treatment 18. Structures 18. Intake Chemical Treatment 19. Impoundments and reservoirs 20. GROUNDWATER 20. Quantity 20. Quality 21. Location 22. General well construction 22. Testing and records 27. Aquifer types and construction methods Special conditions 28. Well pumps, discharge piping and appurtenances 30. PART 4 TREATMENT. GENERAL 36. MICROSCREENING 36. Design 36. CLARIFICATION 36. Presedimentation 37. Coagulation 37. Flocculation 38. Sedimentation 38. Solids contact unit 40. Tube or plate settlers 42. High rate clarification processes 43. filtration 44. Rapid rate gravity filters 44.

6 Rapid rate pressure filters 51. Diatomaceous earth filtration 52. slow sand filters 55. Direct filtration 57. Deep bed rapid rate gravity filters 59. Aerobic Bio- filtration of Surface Water 59. DISINFECTION 62. Contact time and point(s) of application 62. Residual chlorine 62. Testing equipment 63. Chlorine 63. Chloramines 64. Ozone 66. Chlorine dioxide 73. Ultra violet light 74. Other disinfecting agents 74. SOFTENING 74. Lime or lime-soda process 74. Cation exchange process 75. Water quality test equipment 78. ANION EXCHANGE TREATMENT 78. Pre-treatment requirements 78. Design 79. Exchange capacity 79. Number of Units 79. Type of Media 79. Flow Rates 79. Freeboard 79. Miscellaneous Appurtenances 79. Cross Connection Control 80.

7 Construction materials 80. Housing 80. Preconditioning of the media 80. Waste Disposal 80. Water quality test equipment 80. AERATION 80. Natural draft aeration 80. Forced or induced draft aeration 81. Spray aeration 81. Pressure aeration 82. Packed tower aeration 82. Other methods of aeration 85. Protection of aerators 85. Disinfection 85. Bypass 85. Corrosion control 85. Quality control 86. Redundancy 86. IRON AND MANGANESE CONTROL 86. Removal by oxidation, detention and filtration 86. Removal by the lime-soda softening process 86. Removal by manganese coated media filtration 87. Removal by ion exchange 87. Biological removal 87. Sequestration by polyphosphates 87. Sequestration by sodium silicates 88. Sampling taps 88. STABILIZATION & CORROSION CONTROL 88.

8 Corrosion Control Study 89. Instrumentation 89. Carbon Dioxide Addition 89. Acid Addition 90. Phosphates 90. pH/Alkalinity Adjustment 91. Split Treatment 92. Aeration 92. Other Treatment 93. Water Unstable Due to Biochemical Action in Distribution System 93. Chloride to Sulfate Mass Ratio (SCMR) 93. TASTE AND ODOR CONTROL 93. Flexibility 93. Chlorination 93. Chlorine dioxide 93. Powdered activated carbon 93. Granular activated carbon 94. Copper sulfate and other copper compounds 94. Aeration 94. Potassium permanganate 94. Ozone 94. Advanced oxidation processes 95. Other methods 95. MEMBRANE TECHNOLOGIES FOR PUBLIC WATER SUPPLIES 95. Pilot study/preliminary investigations 95. General design considerations 95. Systems treating surface water or GWUDI 98.

9 PART 5 - CHEMICAL APPLICATION. GENERAL 100. Plans and specifications 100. Chemical application 100. General equipment design 100. Chemical Information 101. FEED EQUIPMENT 101. Feeder redundancy 101. Control 102. Dry chemical feeders 102. Positive displacement solution pumps 102. Liquid chemical feeders - siphon control 103. Cross-connection control 103. Chemical feed equipment location 103. In-plant water supply 103. Storage of chemicals 104. Bulk liquid storage tanks 104. Day tanks 105. Feed lines 106. Handling 106. Housing 106. CHEMICALS 107. Shipping containers 107. Specifications 107. Assay 107. OPERATOR SAFETY 107. Ventilation 107. Respiratory protection equipment 107. Chlorine leak detection 107. Other protective equipment 107.

10 SPECIFIC CHEMICALS 108. Chlorine gas 108. Acids and caustics 109. Sodium chlorite 109. Sodium hypochlorite 110. Ammonia 111. Potassium permanganate 113. Fluoride 113. Activated Carbon 115. PART 6 - PUMPING FACILITIES. GENERAL 116. LOCATION 116. Site protection 116. PUMPING STATIONS 116. Suction well 116. Equipment servicing 117. Stairways and ladders 117. Heating 117. Ventilation 117. Dehumidification 118. Lighting 118. Sanitary and other conveniences 118. PUMPS 118. Suction lift 118. Pump Priming 118. BOOSTER PUMPS 119. Duplicate pumps 119. Metering 119. Inline booster pumps 119. Individual home booster pumps 119. AUTOMATIC AND REMOTE CONTROLLED STATIONS 119. APPURTENANCES 119. Valves 119. Piping 120. Gauges and meters 120. Water seals 120.


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