PROBLEM TO BE SOLVED: To provide a solid-liquid separation treatment apparatus which effectively peels the adherend on the surface of a membrane to suppress a fall in the flux density of a membrane filtering speed or a rise in membrane difference pressure and reducing the work labor such as lifting labor or the like required when the membrane is washed with chemicals or replaced, and a solid-liquid separation treatment system. SOLUTION: The solid-liquid separation treatment apparatus is equipped with a casing 12 having an inflow port 20 of water to be treated, an outflow port 10 of concentrated water and an outflow port 14 of filtered water, an ascending flow producing part for converting the inflow water to be treated to an ascending flow in the casing 12, flat membrane modules 24 arranged so as to allow the ascending flow to flow through the gap between the flat membrane modules 24, sedimentary carriers 18 sealed in the casing 12, smaller than the distance between the membrane modules 24 and having a specific gravity of 1.2-3.0 and a sedimentation flow channel 28 for sedimenting the sendimentary carriers 18 rising the gap between the flat membrane modules 24 by the ascending flow. COPYRIGHT: (C)2009,JPO&INPIT
