coalescing media

June 3, 2022
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FABRICATION: The clarifier/separator is a special purpose prefabricated inclined plate and parallel corrugated plate, rectangular, gravity displacement, type unit. The clarifier/separator shall be comprised of a tank containing an inlet compartment, sludge chamber, a separation compartment, and clean water outlet chamber.

TANK:  The tank shall be a single wall construction of 11 gauge stainless steel conforming to ASTM A240, type 304 stainless steel. Welding will be in accordance with AWS D1.1 to provide a watertight tank that will not warp or deform under load.

PIPE CONNECTIONS: All pipe connections 3” and smaller are FNPT couplings. All connections 4“ and larger are flat face flanges with ANSI 150 pound standard bolt circle.

LIFTING LUGS:  The tank shall be provided with properly sized lifting lugs for handling and installation.

COVERS:  The tank will be provided with vapor tight covers for vapor control. Gas vents and suitable access openings to each compartment will be provided. The covers shall be constructed of marine grade aluminum and will be fastened in place. A gasket shall be provided for vapor tightness. 3/8-16 bolts and threaded knobs will be provided for cover attachment.

INLET COMPARTMENT & INCLINED PLATES:  The inlet chamber shall be comprised of a non-clog diffuser to distribute the flow across the width of the chamber. The inlet compartment shall be of sufficient volume to effectively reduce influent suspended solids, dissipate energy and begin separation. The inclined plates will sit elevated on top of a sludge chamber. As the water moves upwards the suspended particles have their upwards velocity interrupted by the inclined plates. These particles drop down and slide down the inclined plate and join larger previously settled particles in sludge hopper. The sludge compartment will be provided to retain settleable solids.

SEPARATION CHAMBER:  The oil separation chamber shall contain 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) shall be at 90 degrees to the horizontal or longitudinal axis of the separator. Spacing between these elements shall be spaced 3/16” apart for the removal of a minimum of 99.9% of free droplets 20 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 effluent.

Laminar flow with a Reynolds Number of less than 500 at a maximum designed 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 shall be crossflow perpendicular to the vertical media elements such that all 132 square feet/cubic foot of coalescing media is available for contact with the coalescing surfaces.

None of the coalescing media surfaces shall be pointing upward so as not to be available for contact with the cross-flowing oily water. The media shall have a minimum 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 OWS shall meet US EPA Method 413.2 and also European Standard 858-1.

BAFFLES:  The tank shall be provided with an oil retention & underflow weir, and overflow weir. The underflow weir will be positioned to prevent re-suspension of settled solids.

SLUDGE CHAMBER:  The sludge chamber shall be located prior to the coalescing compartment for the settling of any solids. It shall also prevent any solids from entering the clean water chamber.

OIL SKIMMER:  The clarifier compartment and the oil separation compartment will be provided with rotatable pipe skimmers for gravity decanting of the separated oil to a product storage tank.

CLEAN WATER CHAMBER:  The tank will be provided with a clean water chamber which allows the water to leave the separator by pumped flow through the clean water outlet port.

VENTS: 2″ vents will be provided for vent piping to atmosphere.

PUMP TRANSFER SYSTEM:  The system is provided with either an electric powered or air-powered diaphragm transfer pump. Electric motor can be 110V/240V/480V. Pump is installed near the SPT system. A screen should be placed on the pump intake to reduce the amount of solids entering the system.

PUMP CONTROL PANEL:  The control panel for the pump will be housed in a NEMA-4X enclosure. The controls may include a Main Disconnect Switch, an Emergency Stop switch, a Manual/off/auto pump switch, 24-volt control relay, Circuit Breaker, motor contactor and overload, and Green run, red fault panel lights.  It may be UL certified, if needed.

OPTIONAL POLISHING PACK:  A final water polishing pack with a stainless steel flow dissipator plate and oil absorbent bags may be provided with the system if local municipalities have sewer effluent requirements.

OPTIONAL OZONE SYSTEM:  The system may be provided with an ozone generator to reduce odors.

SPT Specifications Size Chart

  SPT-10 SPT-20 SPT-30 SPT-50 SPT-75 SPT-100
Flow Rate 1-10 GPM 1-20 GPM 1-30 GPM 1-50 GPM 1-75 GPM 1-100 GPM
Tank Capacity 300 Gal 652 Gal 645 Gal 968 Gal 1419 Gal 1931 Gal
Sludge Volume 27 Gal 27 Gal 45 Gal 85 Gal 85 Gal 85 Gal
Ozone Generation Optional Optional Optional Optional Optional Optional
Product Tank 40 Gal 40 Gal 40 Gal 75 Gal 75 Gal 75 Gal
Polishing Pack Optional Optional Optional Optional Optional Optional
Approx. dimensions, FT 3’W x 8’L x 5’H 4’W x 8.5’L x 6’H 4’W x 9’L x 6’H 4’W x 9.75’L x 6’H 4.5’W x 10’L x 7’H 5.3’W x 10.5’L x 7.3’H
Construction Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel

June 15, 2021
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In some applications, a higher efficiency media is required for environmental concerns. This media uses its high surface to volume ratio to provide extremely efficient oil/ water/ solids separation.

This media is constructed of oleophilic coalescing plates arranged in a cross-fluted configura­tion that provides between 31–69 square feet of oil coalesc­ing surface and 7–17 square feet of solids settling area per cubic foot of media. Each plate has a series of angled ribs, which are sloped from the bottom of the separa­tion chamber to the top at a 60° angle establishing a com­pound inclined surface.

  • Available in stainless steel, PVC, HPVC, polypropylene and stainless steel
  • Vertical slant rib plate spacing of ½”, ¾” or 1 ¼” with slant ribs alternating direction by 90°
  • Supplied in 1’ cubes with optional stainless steel frames for easy installation and removal

The separator and media design maintains a sinusoidal laminar flow throughout the media so the maximum amount of oil separation is achieved. Coalesced oil can flow unimpeded along the plate surfaces to the top of the separator where it is easily removed.

Give us a call at 800-453- 8639 for more information!


June 10, 2021
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Our standard media has vastly superior properties compared to the traditional media used in oil-water separators. These properties result in a more efficient and effective separation than that attained by traditional coalescing media.

  • A larger amount of surface area per cubic foot of media allows for greater oil drop coalescence. This media has 132 ft2/ft3 surface area for oil droplets to contact. Other typical coalescing media have about 48 ft2/ft3 to 68 ft2/ft3.
  • A more efficient first step separation reduces the need for a second polishing step. Our media removes 99.9% of oil droplets 20 microns in size and larger. This meets EPA Method 1664 Revision A and European Standard EN 858-1.
  • An open design eliminates trapping of particles and subsequent clogging of water channels. Oil water separators with this media require fewer maintenance shut-downs and separates oil and water faster.
  • Where higher-than-normal operating temperatures are required, our media outperforms its competitors. It works effectively in temperatures up to 212°F, versus a maximum temperature of about 120°F for competing media.

Give us a call at 800-453- 8639 for more information!


March 8, 2018
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New CF-CP Media (Cross-Flow/Corrugated Plate) Oil Water Separator Media
Image of our New CF-CP Media (Cross-Flow/Corrugated Plate)
Oil Water Separator Media

In many washing applications, solids are a main component of the washing process. Heavy solids such as rocks and muck are often washed off and fall onto the wash pad where they can be easily removed. Other, finer settleable and suspended solids, however, often become entrained in the oily wash wastewater. Separating these settleable or suspended solids from the oily wash water is critical so that they do not clog the separator media and interfere with the oil water separation process.

To insure our oil water separators work well in a high solids environment without clogging, we have introduced a new coalescing media with a corrugated, cross-flow design.

This new media design is both unique and simple. As the water enters the separator, the flow is directed evenly across the surface of the media plates. The solids are captured and fall to the trough area of the corrugated plates below and the oils rise and stick to the trough area of the plates above. This design maintains laminar flow throughout the media so the oil and solids do not remix. Since the plates are smooth, the solids slide down the corrugated plates to the hopper area where they can be easily removed. Separated oil flows upwards along the plates to the top of the separator where it can be removed.

  • Available in stainless steel, PVC, HPVC and polypropylene
  • Plate spacing of ½”, ¾” or 1 ¼” depending on application
  • Supplied in blocks for easy installation and removal

By coupling high efficiency separation with easy maintenance, this new media will ensure your oil water separator
operates at peak performance for years to come.

Give us a call at 800-453- 8639 for more information!

CF-CP Media (Cross-Flow/Corrugated Plate) Oil Water Separator Media
Introduced a new coalescing media with a corrugated, cross-flow design.
CF-CP Media (Cross-Flow/Corrugated Plate) Oil Water Separator Media
Site View of our new coalescing media with a corrugated, cross-flow design.

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At WashBaySolutions.com, we have been specializing in high tech, custom-engineered solutions to complex washing and wastewater issues since 1991.
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