Coalescing media is used in the operation of coalescers such as oil/water separators. The media is oriented within the coalescer vessel such that the contaminated fluid flows horizontally across the media. As oil droplets contact the surface of the media, they become attached due to the oleophilic nature of the media material. The droplets begin to coalesce, forming bigger droplets and increasing in buoyancy, the larger droplets then begin to rise to the top of the vessel. As more oil gathers at the top of the vessel, two distinct fluid layers form: a layer of water and a layer of oil.
The majority of volume (upwards of 95%) of coalescing media is open space. The flow rate capacity of the media is determined by the surface area, which, in turn, is dependent on the size and number of openings. Different opening sizes are available to accommodate a large range of flows, as are some different materials of construction.
When selecting coalescing media, the water flow rate and contaminant of concern are important, as they determine the required surface area and materials of construction.
MLE Equipment uses PVC coalescing media manufactured by Brentwood Industries, and polypropylene media manufactured by Lantec Products. Please see the provided specification sheets and manuals for more detailed information on coalescing media.
