Abstract: A mixture containing solid and liquid components is saturated with a polyelectrolyte compound, over-flocculating the solids contained therein and causing the solids to coalesce into masses or globules. These coalesced masses may then be separated from the liquid component, yielding substantially separated phases.

Abstract: Apparatus for cleaning sediment from basins comprises a suction system that withdraws particulate-laden liquid from the bottom of the basin. A pump providing the suction transports the particulate-laden liquid to a first vessel or catch tank where primary settling of the particulate can occur. A second pump withdraws particulate laden liquid from the catch tank and directs a high velocity flow of particulate laden coolant through separator apparatus for primary separation of particulate matter. The discharge of effluvia of the primary separator is conducted to a second vessel or tank. A third pump withdraws liquid from the lowermost portion of the second vessel and forces a high velocity flow through a secondary system for further separation of particulate matter from the liquid. The discharge of the second separator system is conducted to a third vessel or tank.