Coalescer cartridge and coalescer for oily water

Claim 1

The coalescing means of claim 1 wherein said hydrophilic web of randomly dispersed fibers is disposed in spaced relation relative to said bed of fibers.

Claim 9

The method for separating a mixture of dispersed fine droplets of oil from a flowing stream of water comprising the steps of (1) passing the mixture through a lipophilic web of a coalescing medium to produce larger size droplets of oil; (2) passing said mixture including said larger size droplets and larger sized oil-surface bubbles of water emerging from the downstream side of said lipophilic web through a hydrophilic web of said coalescing medium; (3) breaking said larger sized oil-surfaced bubbles of water in said lipophilic web to form a second plurality of larger size droplets of oil on the discharge side of said hydrophilic web; (4) passing said mixture including said first and second plurality of larger size droplets of oil through a plurality of parallel horizontal contiguously disposed ducts which act to prevent turbulent flow at high flow rates of said stream; (5) further coalescing and separating by gravity said oil droplets on the surfaces of said ducts as said flowing stream moves horizontally through said ducts; (6) moving the coalesced oil droplets horizontally from one end of each duct to its opposite end; (7) intercepting the horizontally flowing coalesced oil droplets as they leave the discharge end of each of said ducts and directing the coalesced and preliminary gravity separated oil transversely from the end of the duct and upwardly therefrom to a final gravity separation chamber; and (8) continuing the flow of water in a horizontal direction outwardly from the end of said ducts.