Skimmer/coalescer system for removing and separating tramp oil from an aqueous coolant

Abstract From the Canadian patent

A skimmer/coalescer system includes a skimmer which skims a two-component liquid from the surface of a liquid mixture in a tank, and a pump which pumps the skimmed liquid to a coalescer for separating and collecting a lower density liquid component from the mixture and returning the rest of the liquid to the tank. The skimmer includes a housing submerged below the liquid surface in the tank, an outlet operatively connected to the pump and an intake which supplies liquid to the housing by gravity. The intake includes a vertically movable inlet which remains adjacent the liquid surface regardless of liquid level changes in the tank thereby to, skim near the surface where the lower density …