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FOREWORD.....................................................................................................................................v
10 ENGINEERING REPORTS AND FACILITY PLANS
10. General............................................................................................................................. 10-1
11. Engineering Report Or Facility Plan................................................................................ 10-1
12. Pre-Design Meeting ....................................................................................................... 10-12
20 ENGINEERING PLANS AND SPECIFICATIONS
20. Plans And Support Documents ........................................................................................ 20-1
21. Specifications................................................................................................................... 20-5
22. Revisions To Approved Plans.......................................................................................... 20-5
30 DESIGN OF SEWERS
31. Approval Of Sewers......................................................................................................... 30-1
32. Design Capacity And Design Flow.................................................................................. 30-1
33. Details Of Design And Construction ............................................................................... 30-1
34. Manholes.......................................................................................................................... 30-7
35. Inverted Siphons .............................................................................................................. 30-8
36. Sewers In Relation To Streams........................................................................................ 30-9
37. Aerial Crossings............................................................................................................. 30-10
38. Protection Of Water Supplies ........................................................................................ 30-10
40 WASTEWATER PUMPING STATIONS
41. General............................................................................................................................. 40-1
42. Design .............................................................................................................................. 40-1
43. Suction-Lift Pump Stations.............................................................................................. 40-7
44. Submersible Pump Stations - Special Considerations ..................................................... 40-8
45. Screw Pump Stations - Special Considerations ............................................................... 40-9
46. Alarm Systems............................................................................................................... 40-10
47. Emergency Operation .................................................................................................... 40-10
48. Instructions And Equipment .......................................................................................... 40-14
49. Force Mains ................................................................................................................... 40-14
50 WASTEWATER TREATMENT FACILITIES
51. Plant Location .................................................................................................................. 50-1
52. Quality Of Effluent .......................................................................................................... 50-1
53. Design .............................................................................................................................. 50-1
54. Plant Details..................................................................................................................... 50-4
55. Plant Outfalls ................................................................................................................... 50-6
56. Essential Facilities ........................................................................................................... 50-7
57. Safety ............................................................................................................................. 50-10
58. Laboratory...................................................................................................................... 50-14
60 SCREENING, GRIT REMOVAL, AND FLOW EQUALIZATION
61. Screening Devices............................................................................................................ 60-1
62. Comminutors.................................................................................................................... 60-5
63 Grit Removal Facilities.................................................................................................... 60-6
64. Preaeration ....................................................................................................................... 60-8
65. Flow Equalization ............................................................................................................ 60-8
70 SETTLING
71. General............................................................................................................................. 70-1
72. Design Considerations ..................................................................................................... 70-1
73. Sludge And Scum Removal ............................................................................................. 70-5
74. Protective And Service Facilities..................................................................................... 70-6
80 SLUDGE PROCESSING, STORAGE, AND DISPOSAL
81. General............................................................................................................................. 80-1
82. Process Selection ............................................................................................................. 80-1
83. Sludge Thickeners............................................................................................................ 80-1
84. Anaerobic Sludge Digestion ............................................................................................ 80-2
85. Aerobic Sludge Digestion.............................................................................................. 80-10
86. High pH Stabilization .................................................................................................... 80-13
87. Sludge Pumps And Piping ............................................................................................. 80-16
88. Sludge Dewatering......................................................................................................... 80-17
89. Sludge Storage And Disposal ........................................................................................ 80-21
90 BIOLOGICAL TREATMENT
91. Trickling Filters ............................................................................................................... 90-1
92. Activated Sludge.............................................................................................................. 90-6
93. Wastewater Treatment Ponds ........................................................................................ 90-19
94. Other Biological Systems .............................................................................................. 90-29
100 DISINFECTION
101. General........................................................................................................................... 100-1
102. Chlorine Disinfection..................................................................................................... 100-1
103. Dechlorination................................................................................................................ 100-6
104. Ultraviolet Disinfection ................................................................................................. 100-9
105. Ozone Disinfection ...................................................................................................... 100-11
110 SUPPLEMENTAL TREATMENT PROCESSES
111. Phosphorus Removal By Chemical Treatment .............................................................. 110-1
112. High Rate Effluent Filtration ......................................................................................... 110-5
APPENDIX HANDLING AND TREATMENT OF SEPTAGE AT
A WASTEWATER TREATMENT PLANT................................................................ A-1
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