ECOS Above Ground Oil Water Separators
Oil water separators are systems used as an efficient method to separate oils and some solids from a variety of wastewater discharges. They are typically installed in industrial and maintenance areas and receive oily wastewater. Our line of above ground oil water separators will assist in the removal of large quantities of free oil from your wastewater before any further treatment step you may have in your process. We have above ground oil water separators with flow rates ranging from 2 to 70 gallons per minute and capacities up to over 1000 gallons.
AHP | BORS | CS | ECOS | Hopper | HQB | OilFree
System Design
Ecologix oil/water separators use parallel corrugated plate technology that causes oil droplets to increase in size, thereby speeding the gravity separation process according to Stokes’ Law. We offer a unique inclined plate design design, called HD Q-PAC, with an internal structure of interconnecting plates having many crossing points between adjacent plates; as the oil water mixture flows through the separator, new droplets coalesce with retained droplets to form larger droplets. The enlarged droplets are released, and they rise to the surface where they decant from the separator. Since the Stokes’ Law calculations presume a zero velocity flow through the HD Q-PAC Plates, a Reynold’s Number less than 500 will ensure optimum separation in the oil water separator. Ecologix offers Oil/Water Separators for separation treatment of groundwater from free phase LNAPL and DNAPL contaminants. All system designs meet or exceed the guidelines of API-421 and ASTM-D19.31.11.4.
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Features & Benefits
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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.
PROFESSIONAL ASSOCIATIONS
