Abstract: Apparatus for removing solids from a liquid/solid mixture includes a plurality separation compartment formed by a plurality of weir partitions. According to one aspect of the invention, a lamella clarifier is positioned within one of the compartments. According to another aspect of the invention, a drain trough extends along the bottom of the apparatus and a plurality of drain pipes are connected to the trough. The drain pipes are connected to a common manifold pipe which in turn is connected to an inlet of a pump. The pump may be activated to remove separated solids that accumulate in the trough at the bottom of each compartment.