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Oil Water Separator (OWS)

FLOAT TO THE TOP

Designed to API 421 and 620 standards, Ellis engineers will work to select the best model and materials of construction to maximize oil separation while minimizing O&M costs.

PACKING A PUNCH

Oil coalescing media packs are available in an array of materials to best suit the application needs of cost, material temperature, corrosion resistance, and chemical compatibility.

KEEPING IT QUIET

The OWS has been engineered with no moving parts. Maintenance is minimized while efficiency is maximized with the simplistic design.

There are many reasons to separate oil from waste streams. In some cases it can be valuable oil being recovered, polished, and sold. In other cases it can be hazardous oil that may contaminate surface and groundwater if not properly recovered at the source. No matter what the application, there is a world of oil and liquids to be separated.

The Ellis Oil Water Separator (OWS) has been engineered to deliver the best quality separation at lowest O&M cost. Other technologies can be expensive, noisy, energy consumptive, and do not always work. The OWS works efficiently while maximizing the cheapest work force known to man, gravity.

How it works

The beauty of the OWS design lay within the simplicity. As shown in the figure below the feed enters the OWS on the left (for reference) and is immediately directed downward. The feed then flows upward through a media pack. Inside the pack the de-emulsified oil begins to coalesce and float upwards and over a baffle into an isolated oil collection chamber.

OWS-moving-drawing

The clean liquid that does not float is decanted off the side over an adjustable weir at a liquid level slightly lower than the floating oil. Any solids that may enter with the feed are separated early in the process and collect in the sludge chamber.

One may wonder, what exactly causes the oil to coalesce inside the media pack? The simple answer lay within Stoke’s Law (below). The law suggests that the only practical parameter to influence the oil separation rate is the oil droplet size. By doubling the size of the oil droplet we square the rise/separation rate.

Stokes-law-rate-of-rise-graph

How can Ellis make oil droplets bigger without adding chemicals or additional heat inside the OWS? The answer is, again, simple: a specially designed Ellis media pack (below). The coalescing media material is usually made from oleophilic material that’s assembled in a crisscross honeycomb fashion. As the oily feed travels through the pack, different flow paths collide and the oil particles stick together and grow in size. Any heavy solids that are too dense to make this upward path and will inherently slide back down through the pack into the sludge chamber.OWS_dot images

 

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OWS Sizing & general information

Model-GPMWidth (ft)Length (ft)Height (ft)Coalescing Area (ft²)Settling Area (ft²)Empty Weight (lbs)
OWS-152.57.24330821,200
OWS-302.57.256701671,400
OWS-502.58.261,0002501,800
OWS-753.58.261,5103772,200
OWS-1003.58.27.12,0105022,500
OWS-1505.58.27.13,3608403,800
OWS-2006.58.27.14,0301,0074,300
OWS-2508.58.27.25,3701,3425,900
OWS-3009.58.27.26,0401,5106,500
OWS-4006.513.67.18,0602,0107,800
OWS-5008.513.67.110,7402,6809,300
OWS-6009.513.67.112,1003,02511,200
OWS-8007.2171116,1204,03013,200
OWS-10009.2171121,5005,36016,000
OWS-120010.2171124,1606,04018,500
OWS-150010.22511.530,2407,56021,200
OWS-200011.22811.540,32010,10027,500
OWS-250011.23211.547,05011,75030,400
OWS-300011.23811.553,75013,44031,700
OWS-350011.23612.358,20014,60033,200
OWS-400011.23813.374,00018,50035,600
OWS-450011.24214.381,30020,33039,600
OWS-500011.24415.388,70021,20043,200

*Above information is subject to change.

Applications

  • Algae Removal
  • Animal Food Production
  • Dairy & Mil Byproducts
  • Dyeing & Finishing Textiles
  • Energy Production Byproducts Treatment & Conditioning
  • Food Packaging & Processing byproducts
  • Frozen Food Processing
  • Groundwater Remediation
  • Heavy Metal Removal
  • Industrial & Commercial Laundries
  • Industrial Floor Wash-down Solids Separation & Conditioning
  • Juice Separation & Conditioning
  • Meat Packing & Processing Byproducts
  • Oil & Petrochemical Production
  • Pre-biologic Pressing Treatment/Conditioning
  • Preparation of Parts for Painting
  • Pulp & Paper Production
  • Secondary Biological Solids Removal
  • Secondary Sludge Thickening (Industrial & Municipal)
  • Steel Mill Production
  • Storm Water Runoff
  • Vehicle & Fleet Washing

 

OPTIONAL FEATURES

Materials of Construction Coalescing Media Solids Discharge Auger Intake & Discharge Pumping Controls Freeze Protection Covers & Hatches Intake Heat Conditioning OSHA Safety Guards & Catwalks