MIL-HDBK-1005/9A
Page
3.8.5
Pump Stations . . . . . . . . . . . . . .
. 113
3.9
Oily Wastewater Treatment . . . . . . . .
. 114
3.9.1
General . . . . . . . . . . . . . . . . .
. 114
3.9.2
Treatment Requirements. . . . . . . . . .
. 115
3.9.2.1
Discharge to Publicly Owned
Treatment Works . . . . . . . . . . . . .
.
115
3.9.2.2
Discharge to Navigable Water . . . . . .
.
119
3.9.2.3
Redundancy . . . . . . . . . . . . . . .
.
119
3.9.3
Sulfide Control . . . . . . . . . . . . .
.
120
3.9.4
Dissolved Metals Removal . . . . . . . .
.
124
3.9.5
Emulsified Oil Treatment . . . . . . . .
.
125
3.10
Design Criteria for Oil-Water Separators
and Appurtenances
...........
.
129
3.10.1
General
................
.
129
3.10.1.1
Processes . . . . . . . . . . . . . . . .
.
129
3.10.1.2
Equipment . . . . . . . . . . . . . . . .
.
130
3.10.1.3
Equalization (Surge Tank) . . . . . . . .
.
130
3.10.1.4
Grit Removal . . . . . . . . . . . . . .
.
130
3.10.2
Load Equalization Tank (LET) . . . . . .
.
130
3.10.2.1
Basis of Sizing . . . . . . . . . . . . .
.
131
3.10.2.2
Layout . . . . . . . . . . . . . . . . .
.
131
3.10.2.3
Sloping Bottom . . . . . . . . . . . . .
.
136
3.10.2.4
Sludge Scraping Mechanism
.......
.
136
3.10.2.5
Oil Skimmer
..............
.
136
3.10.2.6
Sample Taps
..............
.
138
3.10.2.7
Water Supply . . . . . . . . . . . . . .
.
138
3.10.2.8
Corrosion Protection . . . . . . . . . .
.
138
3.10.3
API Separator
.............
.
139
3.10.4
Induced Gravity Separator . . . . . . . .
.
139
3.10.4.1
Parallel Plate Separator . . . . . . . .
.
142
3.10.5
Skimming Dam . . . . . . . . . . . . . .
.
144
3.10.5.1
Diversion Pond . . . . . . . . . . . . .
.
150
3.10.6
Dissolved Air Flotation (DAF) and Induced
Air Flotation (IAF) . . . . . . . . . . .
.
150
3.10.6.1
Pressurization Method
.........
.
150
3.10.6.2
Design Parameters . . . . . . . . . . . .
.
151
3.10.6.3
Chemical Conditioning
.........
.
152
3.10.7
Polishing Treatment Alternatives . . . .
.
152
3.10.7.1
Multimedia Filtration
.........
.
159
3.10.7.2
Coalescing Filtration
.........
.
160
3.10.7.3
Activated Carbon Adsorption
......
.
160
3.10.8
Sludge Dewatering and Disposal . . . . .
.
163
3.10.8.1
Sludge Drying Beds . . . . . . . . . . .
.
163
3.10.8.2
Drying Lagoons . . . . . . . . . . . . .
.
166
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