TS series oil water separators are classified as coalescing type separators (CPS), where oil droplets in suspension in the moving water stream are removed in a coalescing process by the separating media.
The separating media in the two stages of the separator provides a random packed mass of polypropylene rings with a maximized ratio of surface area to volume. The mass of rings fully occupy the compartments of the two separation stages providing high surface area with the necessary open area to allow the waste water stream to pass through. The random placement of the packing ensures that the waste water cannot “channel” and avoid passing through the media rings. In the separating process the oil droplets carried in the waste water stream must pass through the maze of polypropylene rings. The gentle flow used, in conjunction with and high surface area and depth of the bed in both compartments, ensures that the majority of oil droplets, however small, impinge on a ring surface. The droplet velocity reduces to zero and gravity takes control. As additional oil droplets impinge on the ring the droplets ‘coalesce’ together and grow in size. As the droplet volume increases the buoyancy also increases. This increasing buoyancy drives the droplets to top surface. As the oil level grows on the top surface it overflows to a waste oil collection container. Similarly, but in reverse sequence, the solids particles impinge on the ring surfaces and lose their velocity. Gravity will draw them to the base of the unit as their particle size increases. Upon passing through the treatment system, created by the two stage packed media coalescing process, water is now treated and via separator outlet is ready for disposal or to commence next stage of treatment.
