University of Minnesota
Minnesota Technical Assistance Program
http://www.mntap.umn.edu
612.624.1300

Emulsified Oil and Water-Separating Products

The build-up of emulsified waste oil can contaminate aqueous cleaning solutions. This oil can decrease the solution’s cleaning capability. Separating oil from the water is an effective technique for extending the usefulness of process fluid or in pre-treating the wastewater prior to sewering.

Conventional oil-water separation methods, such as gravity separation and coalescence, are generally used for mechanically dispersed oil. Typically, emulsions formed in cleaning solutions have smaller droplets making them more stable, and conventional removal methods cannot split the emulsion.

Ultrafiltration and chemical treatment are two effective separation methods. Ultrafiltration membranes can isolate emulsified oil droplets from water. As a result, ultrafiltration produces a reusable oil-free solution and an oil-rich concentrate. Chemical treatment requires adding a combination of either a salt or a polymer with an acid to destabilize the emulsion, allowing the oil to separate from the water. Additional separation equipment, such as a skimmer, is used in conjunction with emulsion-breaking chemicals.

These related reference lists are also available from MnTAP: Coolant Maintenance Equipment and Supplies [#4] and Centrifuge Equipment and Services [#2].

MnTAP maintains this list of products for separating emulsified oil and water solely as a service to Minnesota companies. This is not a complete list of suppliers or products and does not represent an endorsement by MnTAP. By providing this list, MnTAP does not represent that the products do or do not ensure compliance with environmental and safety laws in any specific application.

Company

Local Representative

Notes

Alkota Cleaning Systems, Inc.
Alcester, SD
800.255.6823

American Pressure, Inc.
Robbinsdale, MN
763.521.4442

Portable and large-scale systems for reuse of wash water.

Edje Tech Services
Wellington, OH
800.242.0525

 

Ultrafiltration to recover 50-20,000 gpd of synthetic coolant, wash water, or mop water.

Infinitex
Clarence Center, NY
716.741.8381

 

Units are available to process more than 50 gpd standard units. Can recycle wastewater.

Koch Membrane Systems, Inc.
Wilmington, MA
888.677.5624

 

Konsolidator filtration systems process over 5,000 gpd. Wide range of applications including cleaning and machine fluid recycle. Recovery rates of 90-99% are common.

PRAB
Kalamazoo, MI
800.968.7722

 

Ultrafiltration systems extend wash water, rinse water, and coolant.

Sanborn Technologies
Walpole, MA
508.660.9150

 

Ultrafiltration to recover 50-20,000 gpd of synthetic coolant, wash water, or mop water.

Company Contact List

Alken-Murray Corp.
Flint Hills, VA
540.636.1236

Beckart Environmental
Kenosha, WI
262.656.7680

Chemtall Oakite
Berkeley Heights, NJ
800.526.4473

TramFloc, Inc.
Tempe, AZ
480.491.6895 | 800.613.6803

Taskem, Inc.
Cleveland, OH
216.351.1500

Taskem (Local Representative)
W.D. Forbes Company, Minneapolis, MN
612.378.1917

 

#6 | 11/2010

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