Above Ground Oil Water Separators (ECOS)

Oil water separators are used to separate oils and solids from a variety of wastewater discharges. Above ground oil water separators will remove large quantities of free or mechanically emulsified oils from a waste stream. Our units can process oily wastewater at rates between 2 to 70 gallons per minute. Request a Quote

System Design

Ecologix oil water separators use parallel corrugated plate technology that causes oil droplets to increase in size, and separate more quickly. We offer a unique inclined plate design, called HD Q-PAC. The Q-PAC is made of a structure of interconnecting plates with many crossing points. As the oil/water mixture flows through the separator, new droplets coalesce with retained droplets and form larger droplets. The enlarged droplets rise to the surface and decant from the separator. All system designs meet or beat the guidelines of API-421 and ASTM-D19.31.11.4.

Design Features

  • Stainless Steel construction
  • Compact size
  • No chemicals, absorbent, or filter cartridges
  • 99.99% removal of free oil >20 microns
  • No moving parts
  • No power consumption
  • Meets EPA Method 413.2 and European Standard EN 858-1
  • High surface area - 132 ft² per 1ft³

Process Illustration

Above Ground Oil Water Separator Process Illustration

Oil Water Separator Available Models (Flow rates based on oil at 0.9 specific gravity)

Model Number Description Flow Rate GPM Dimensions Capacity Gallons
AGS-1SS
Flat Bottom
2 - 5 16"W X 28"H X 52"L 60
AGS-1SS-30V
W / Sump
2 - 5 16"W X48"H X 52"L 75
AGS-1SS-HP
W / Sludge Hopper
2 - 5 16"W X 48"H X 52"L 75
AGS-1SS-30V-HP
W / Sump & Sludge Hopper
2 - 5 16"W X 48"H X 52"L 82
AGS-2SS
Flat Bottom
3 - 10 28"W X 28"H X 52"L 120
AGS-2SS-60V
W / Sump
3 - 10 28"W X 48"H X 52"L 174
AGS-2SS-HP
W / Sludge Hopper
3 - 10 28"W X 48"H X 52"L 134
AGS-2SS-60V-HP
W / Sump & Sludge Hopper
3 - 10 28"W X 48"H X 52"L 188
AGS-3SS
Flat Bottom
5 - 15 40"W X 28"H X 52"L 180
AGS-3SS-90V
W / Sump
5 - 15 40"W X 28"H X 52"L 270
AGS-3SS-HP
W/ Sludge Hopper
5 - 15 40"W X 48"H X 52"L 200
AGS-3SS-90V-HP
W / Sump & Sludge Hopper
5 - 15 40"W X 48"H X 52"L 360
AGM-1SS
Flat Bottom
3 - 10 16"W X 28"H X 64"L 75
AGM-1SS-30V
W / Sump
3 - 10 16"W X 48"H X 64"L 105
AGM-1SS-HP
W / Sludge Hopper
3 - 10 16"W X 48"H X 64"L 89
AGM-1SS-30V-HP
W / Sump & Sludge Hopper
3 - 10 16"W X 48"H X 64"L 119
AGM-2SS
Flat Bottom
6 - 20 28"W X 28"H X 64"L 150
AGM-2SS-60V
W / Sump
6 - 20 28"W X 48"H X 64"L 195
AGM-2SS-HP
W/ Sludge Hopper
6 - 20 28"W X 48"H X 64"L 178
AGM-2SS-60V-HP
W / Sump & Sludge Hopper
6 - 20 28"W X 48"H X 64"L 223
AGM-3SS
Flat Bottom
9 - 30 40"W X 28"H X 64"L 225
AGM-3SS-90V
W / Sump
9 - 30 40"W X 48"H X 64"L 279
AGM-3SS-HP
W / Sludge Hopper
9 - 30 40"W X 48"H X 64"L 267
AGM-3SS-90V-HP
W / Sump & Sludge Hopper
9 - 30 40"W X 48"H X 64"L 321
AGM-1SS-1H
Flat Bottom
6 - 20 16"W X 40"H X 64"L 86
AGM-1SS-36V-1H
W / Sump
6 - 20 16"W X 60"H X 64"L 142
AGM-1SS-HP-1H
W / Sludge Hopper
6 - 20 16"W X 60"H X 64"L 96
AGM-1SS-36V-HP-1H
W / Sump & Sludge Hopper
6 - 20 16"W X 60"H X 64"L 152
AGM-2SS-1H
Flat Bottom
12 - 40 28"W X 40"H X 64"L 172
AGM-2SS-73V-1H
W / Sump
12 - 40 28"W X 60"H X 64"L 217
AGM-2SS-HP-1H
W / Sludge Hopper
12 - 40 28"W X 48"H X 64"L 194
AGM-2SS-73V-HP-1H
W / Sump & Sludge Hopper
12 - 40 24"W X 58"H X 64"L 239
AGM-3SS1H
Flat Bottom
18 - 60 40"W X 40"H X 64"L 258
AGM-3SS-118V-1H
W / Sump
18 - 60 40"W X 60"H X 64"L 325
AGM-3SS-HP-1H
W / Sludge Hopper
18 - 60 40"W X 60"H X 64"L 290
AGM-3SS-118V-HP-1H
W / Sump & Sludge Hopper
18 - 60 40"W X 60"H X 64"L 357
AG-1SS
Flat Bottom
9 - 30 16"W X 40"H X 88"L 157
AG-1SS-38V
W / Sump
9 - 30 16"W X 60"H X 88"L 172
AG-1SS-HP
W / Sludge Hopper
9 - 30 16"W X 60"H X 88"L 185
AG-1SS-38V-HP
W / Sump & Sludge Hopper
9 - 30 16"W X 60"H X 88"L 200
AG-2SS
Flat Bottom
18 - 60 28"W X 40"H X 88"L 314
AG-2SS-75V
W / Sump
18 - 60 28"W X 60"H X 88"L 340
AG-2SS-HP
W / Sludge Hopper
18 - 60 28"W X 60"H X 88"L 343
AG-2SS-75V-HP
W / Sump & Sludge Hopper
18 - 60 28"W X 60"H X 88"L 369
AG-3SS
Flat Bottom
27 - 90 40"W X 40"H X 88"L 471
AG-3SS-113V
W / Sump
27 - 90 40"W X 60"H X 88"L 540
AG-3SS-HP
W / Sludge Hopper
27 - 90 40"W X 60"H X 88"L 550
AG-3SS-113V-HP
W / Sump & Sludge Hopper
27 - 90 40"W X 60"H X 88"L 619
AG-4SS
Flat Bottom
36 - 120 52"W X 40"H X 88"L 628
AG-4SS-150V
W / Sump
36 - 120 52"W X 60"H X 88"L 680
AG-4SS-HP
W / Sludge Hopper
36 - 120 52"W X 60"H X 88"L 750
AG-4SS-150V-HP
W / Sump & Sludge Hopper
36 - 120 52"W X 60"H X 88"L 802
AG-4SS-1H
Flat Bottom
60 - 170 52"W X 52"H X 88"L 840
AG-4SS-240V-1H
W / Sump
60 - 170 52"W X 72"H X 88"L 900
AG-4SS-1H-HP
W / Sludge Hopper
60 - 170 52"W X 72"H X 88"L 960
AG-4SS-240V-HP-1H
W / Sump & Sludge Hopper
60 - 170 64"W X 72"H X 88"L 1010

Oil Water Separator Available Options

Sludge Hopper Option

Oil water separators designed with the sludge hopper option allow for the natural settling of heavy solids. The hopper has a port that can be connected to a sludge transfer pump.

Clean Water Sump Option

Oil water separators designed with the clean water sump allow for a float swith and submersible pump for pumping clean water into a different location.

Sump and Sludge Hopper

Oil water separators can be built with both sludge hopper and clean water sump to perform multiple tasks in a single unit.

Oil Containment Chamber

Captured oil can be collected for resale or reuse. The optional oil containment compartment has an upper and lower port for pulling oil out of the holding chamber.

Oil Containment with Sight Glass Option

Oil water separators can be modified with sight glasses to allow for visual inspection of clean water sump and oil containment tank levels.

Fabrication

The oil water separator is a special purpose, prefabricated, parallel-corrugated plate, rectangular, gravity displacement, type oil water separator. The separator is comprised of a tank containing an inlet compartment, separation chamber, sludge chamber, and clean water outlet chamber.

Tank

The tank is built of a single wall construction conforming to ASTM A240, type 304 stainless steel. Welds are in accordance with AWS D1.1 to provide a watertight tank that will not warp or deform under load.

Pipe Connections

All connections 3" and smaller are FNPT couplings. All connections 4" and larger are flat face flanges with ANSI 150 pound standard bolt circle. Use flanged piping connections that conform to ANSI B16.5.

Separator Corrosion Protection (for carbon steel only)

After shop hydrostatic test has been successfully completed, a coating system is applied to the interior and exterior surfaces of the separator. Interiors and exteriors are sandblasted to SSPC-SP10 & SSPC-SP6; Interior lined with Tnemec Series 61 liner to 9 mils MDFT; Exterior coated with polyamide epoxy to 6 mils MDFT.

Lifting Lugs

The tank is provided with properly sized lifting lugs for handling and installation.

Covers

The tank comes with a vapor tight cover for vapor control. Gas vents and suitable access openings to each compartment are provided. The covers are constructed of the same material as the tank and are fastened in place. A gasket is provided for vapor tightness. 304 SS Latches will are provided for cover attachment.

Inlet Compartment

The inlet chamber is comprised of a non-clog diffuser to distribute the flow across the width of the separation chamber. The inlet compartment is of sufficient volume to effectively reduce influent suspended solids, dissipate energy and begin separation. The media sits elevated on top of a sludge baffle. The sludge baffle is provided to retain settleble solids and sediment from entering the separation chamber.

Separation Chamber

The oil separation chamber contains HD Q-PAC Coalescing Media containing a minimum of 132 square feet per cubic foot of effective coalescing surface area. The medias needle like elements (plates) are placed at 90 degrees to the horizontal or longitudinal axis of the separator. Spacing between these elements are spaced 3/16" apart for the removal of a minimum of 99.9% of free droplets 40 micron in size or greater. The elements are positioned to create an angle of repose of 90 degrees to facilitate the removal of solids that may tend to build up on the coalescing surfaces, which would increase velocities to the point of discharging an unacceptable design flow rate shall be maintained throughout the separator packed bed including entrance and exit so as to prevent re-entrainment of oils with water. Flow, through the polypropylene coalescing media, is a crossflow perpendicular to the vertical media elements such that all 132 square feet/cubic foot of coalescing media surfaces point upwards, so as not to be available for contact with the crossflowing oily water. The media shall has a minimum void of 87% void volume to facilitate sludge and dirt particles as they fall off the vertical elements and settle in the sludge compartment. The media, when installed in crossflow oil water separator, meets US EPA Method 413.2 and also European Standard 858-1 for oil water separators.

Baffles

An oil retention, underflow weir, and overflow weir are positioned to prevent re-suspension of settled solids.

Sludge Chamber

The sludge chamber is located prior to the coalescing compartment for the settling of any solids. It prevents any solids from entering the clean water chamber. (Larger amounts of solids can be collected in a sludge hopper as an option.)

Oil Skimmer

The oil separation chamber comes with a rotatable pipe skimmer for gravity decanting of the separated oil to an integral product storage tank or an external product storage tank.

Clean Water Chamber

The tank comes equipped with a clean water chamber which allows the water to leave the separator by pumped / gravity flow through the clean water outlet port.

Vents

1" vents are provided with vent piping to the atmosphere.