A process and apparatus for the separation of mixtures of liquids and finely divided suspended particles to produce a liquid product stream having a reduced concentration of finely divided suspended particles. The process and apparatus use a generally vertical separator vessel having a feed inlet distributor located in a lower locus of the vessel which directs the feed mixture in an upward direction in order to initially flow through a multiplicity of vertical and intersecting baffles located in the upper locus of the vessel and then to flow through a horizontal baffle having a multiplicity of holes to allow passage of the liquid and located above and adjacent to the vertical baffles.