Model OWS Oil Water Separator

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In many manufacturing processes, coolants, quenchants and other aqueous solutions become contaminated with tramp, lube and hydraulic oils which detrimentally affect the process. In addition, catch basins, storm sewers and retention ponds are often mixed with motor oil, gasoline and other hydrocarbons which prevent the safe discharge to surface waters.

To effectively remove these contaminants, Filtertech manufactures its Model OWS Oil Water Separator. The OWS uses uniquely-designed tube packs which separate and remove tramp oils and other hydrocarbon contaminants from the aqueous solution.  Our OWS is manufactured in a wide range of sizes to accommodate many applications. In addition, the OWS is available in various materials of construction and optional features.

Mode of Operation

The contaminated aqueous solution would drain by gravity or be pumped to the Model OWS Oil Water Separator. The aqueous solution enters the OWS through an inlet port onto a distribution plate which evenly distributes the solution along the total width of the separator while at the same time slowing down the solution's velocity. This allows the heavier solids to fall to the bottom of the separator while the larger oil droplets rise to the liquid surface.

The aqueous solution then passes over the solids dam and flows through the coalescing tube packs which consist of many polypropylene tubes that are closely packed. As the solution travels the tortuous path through the tube packs, the oil droplets only need to rise a short distance to come into contact with the tube above. Since the polypropylene is oleophilic (oil attracting), the oil droplets readily adhere to the tube surface.

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Over time, the oil droplets which collect on the tube surfaces and will coalesce together to form larger droplets which make their way to weep holes in the tube. The large oil droplets are then released from the tubes and float to the surface of the liquid. The accumulated oil layer on the surface of the liquid is then decanted through adjustable overflow weirs and directed to a waste oil tank for disposal.

Similar to the oil droplets, the smaller solids in solution will settle on top of the tubes and eventually fall through weep holes to the sloped bottom of the tank. Discharge drains are located along the bottom of the tank for quick removal of the solids.

The clean oil and dirt-free water exits the opposite end of the tube packs and passes under an oil dam and is then discharged through a final adjustable overflow weir and drains away from the separator by gravity.

An optional transfer sump compartment is also available if elevation does not permit a gravity drain.