Vacuum Separation

This technique takes advantage of the fact that the vapor pressure of water is lower than that of most turbine oils. In this technique, the contaminated oil/water mixture is passed through a vacuum chamber where the water is literally drawn out of the oil as a vapor. This approach can work well with most turbine oils, except those that contain volatile ingredients. In vacuum separation, the volatile ingredients would be removed right along with the water. This type of system can be effective, but it is very expensive to operate.