Above-Ground Water/Oil/Solids Separator – WOS Series

Above-Ground Water/Oil/Solids Separator – WOS Series

Above-Ground Water/Oil/Solids Separator – WOS Series

*SPECIAL ORDER ITEM.  Please contact our offices at 330-753-8394 for additional information, custom quotes, installation, or to place an order.


Mechanical Water/Oil/Solids Separators are designed to remove free oils from wash water before discharging into your sanitary sewer.  The water/oil/solids separators will reduce the amount of suspended solids while removing hydrocarbons to meet local sanitary sewer discharge requirements.


  • Ozone
  • Stainless-steel tank
  • Capability of handling oil and solids
  • Takes up an extremely small footprint
  • Easy to maintain
  • CSA approved control panel which meets the requirements of the US and Canadian standards for an Industrial Control Panel
  • 1.0 HP surface-mount sump pump


  • Continuous Recirculation – recirculates back to the pit to prevent water from becoming stagnant
  • 230V, 1 ph – Upgrades 120V model to operate at 230V
  • 460V, 3 ph – Upgrades 208-230V model to operate at 460V

Process and Flow Description:

  1. Surface-Mount Sump Pump – Untreated wash water is introduced into the system via a 1.0 HP surface-mount sump pump, which is included with the system.
  2. Corona Discharge Ozone System – As the wash water is pumped into the oil/water/solids separator and it is injected with a high concentration of ozone via a corona discharge ozone injector system for a “quick kill” of live bacteria on contact.  Ozone also breaks up emulsified oils, allowing them to coalesce and float to the top of the tank for separation into the oil decanter.
  3. Three Stage Stainless-Steel Tank – As the water flows through the stainless-steel three stage oil/water/solids separator, it changes the overall flow direction several times as it flows around four vertical baffles.  The water is slowed down and fine silt and solids drop to the bottom of the tank.
  4. Bio-Film Generative Media – As the water progresses through hundreds of square-feet of honey-combed-shaped meshed oleophilic (oil-attracting) coalescing media, it will change directions countless times.  In this process, mechanically emulsified oil particles are attracted from the water to the oleophilic media and float to the surface.
  5. Oil Skimmer/Decanter – Once the oil floats to the water’s surface, it is them skimmed into an oil decanter for easy disposal.
  6. Sloped Solids Trap – Fine silt and particles are dropped to the bottom of the sloped stainless-steel tank for easy flushing and disposal.
  7. Discharge Port – Once the water has been treated, it flows into the final chamber of the stainless-steel tank and then through a 2-inch drain line to a sanitary sewer drain in the floor.
  8. Electrical Control Panel – CSA listed NEMA-4 rated corrosion-proof control panel for safe and reliable operation.


***Models Available with Flow Rates of 0-15 GPM & 0-30 GPM ***


The WOS Series is perfect for the following applications:

  • Rental Yards
  • Heavy Equipment Dealers
  • Trucking Facilities
  • Military Bases
  • Truck Rental Fleets
  • Diesel Repair Facilities
  • Forklift Washing Operations
  • Aircraft Maintenance and Restoration
  • Shipyards
  • Municipalities/ State DOTs
  • Oil Fields
  • Engine Rebuilders and Manufacturers


The Importance of a Proper Pit System

  • Once equipment is washed, the untreated wash water flows into your pit system.  A proper pit system for your application is the first step in proper wash water treatment an a critical element in any wash water recycle system.  Please contact us at 330-753-8394 to determine the pit system configuration that works best for your application.

Flow rate, coalescing media, tank holding capacity, in-line strainer pump, power requirements, and weight/dimensions vary depending on which model is best for your application.  Please contact our office at 330-753-8394 so we can help determine which best fits your needs.