Selective and Non-Selective Skimmers
Elastec drum and disc skimmers are made with an oleophilic (oil-attracting) material and are selective. This means oil adheres to the drum or disc and is separated from the water’s surface. Selective skimmers recover a higher concentration of oil and very little water. They are the most efficient floating oil skimmers to clean up a spill incident.
Non-selective skimmers do not discriminate between oil and water. Weirs (gravity oil skimmers) and suction skimmers collect oil, water and anything else on the surface.
Tested at Ohmsett
Elastec skimmers are performance tested at Ohmsett, one of the largest oil spill testing facilities in the world. It is located at the Naval Weapons Station Earle Waterfront in the United States. Ohmsett follows the American Society for Testing and Materials (ASTM) standard F-2709-08 Standard Test Method for Determining Nameplate Recovery Rate of Stationary Oil Skimmer Systems.
Brush Drum Skimmer
Elastec offers an oleophilic brush oil skimmer. Brush oil skimmers can be ideal for use in heavy, viscous oils, or situations in which the oil has started to emulsify. The brush drum works by skimming the oil from the surface of the water where the brushes are then scraped off and oil is collected in a sump where it can be pumped into a storage unit.
Oil Skimmer Frequently Asked Questions
What are oil skimmers?
Oil skimmers are devices that pickup oil floating on the surface of water
Whats different types of oil skimmers are there?
There are many different kinds of skimmers depending on the application, from simple weir / suction heads to large offshore units. They can be categorized into oleophilic (selective such as a drum skimmer) or weir.
How much oil can they pickup?
It depends greatly on the size and type of oil skimmer. Small industrical skimmers such as tubes or belts may only recover a few gallons per minute whereas large offshore skimmers such as the X150 can pickup thousands. Skimmer performance can be verified by ASTM standards (ASTM F2709). Learn about ASTM Standards for oil skimmers.
How efficient are they?
Selective (oleophlic) skimmers can pickup as little as 2 % water whereas a weir or suction skimmer may pickup 50%.
How do I know which skimmer is right for me?
Send us details of your application and we will help you choose. We typically need to know;
- 1. Operating environment – industrial (separators, collection ponds), inland (rivers, streams), coastal or offshore.
- 2. Oil type and amount that needs to be collected (continuous or instantaneous release)
- 3. Power or compressed air available
- 4. Resources available to deploy equipment – eg boats, crane or truck
- 5. Corrosive or Hazardous environment
- 6. Continuous duty or emergency response
ASTM Standards for Oil Skimmers
The following links offer information related to ASTM International standards for oil skimmers.
- F631-15(2020) Standard Guide for Collecting Skimmer Performance Data in Controlled Environments
- F1084-08(2018) Standard Guide for Sampling Oil/Water Mixtures for Oil Spill Recovery Equipment
- F1607-95(2018) Standard Guide for Reporting of Test Performance Data for Oil Spill Response Pumps
- F1778-97(2020) Standard Guide for Selection of Skimmers for Oil-Spill Response
- F1780-18 Standard Guide for Estimating Oil Spill Recovery System Effectiveness
- F2008-00(2018) Standard Guide for Qualitative Observations of Skimmer Performance
- F2709-19 Standard Test Method for Determining a Measured Nameplate Recovery Rate of Stationary Oil Skimmer Systems
- F3350-18 Standard Guide for Collecting Skimmer Performance Data in Ice Conditions