A separator comprising: a separation chamber; a plurality of inclined parallel plates (200,300,400,500) of the separation chamber each having a top end, a bottom end, a first longitudinal side and a second longitudinal side, wherein each plate of the plurality of inclined parallel plates includes: a contacting surface (202,302,402,502) for contacting the slurry; a lower surface (204,304,404,504) opposite the contacting surface; and, a pair of opposed upturned edges (220,230) upturned on the first and second longitudinal sides of the plurality of inclined parallel plates in a direction of the contacting surface (202,302,402,502), the pair of opposed upturned edges (220,230) forming a settling space, and in contact with the lower surface (204,304,404,504) of another plate of the plurality of inclined parallel plates forming a separation space (352,352,452,552) defined by the contacting surface (202,302,402,502), the pair of opposed upturned edges, and the lower surface of the another plate(204,304,404,504), characterized in that each upturned edge (220,230) comprises a first portion (206,207) extending toward the another plate, and a second portion (208,209) contacting the another plate. a separation chamber; a plurality of inclined parallel plates (200,300,400,500) of the separation chamber each having a top end, a bottom end, a first longitudinal side and a second longitudinal side, wherein each plate of the plurality of inclined parallel plates includes: a contacting surface (202,302,402,502) for contacting the slurry; a lower surface (204,304,404,504) opposite the contacting surface; and, a pair of opposed upturned edges (220,230) upturned on the first and second longitudinal sides of the plurality of inclined parallel plates in a direction of the contacting surface (202,302,402,502), the pair of opposed upturned edges (220,230) forming a settling space, and in contact with the lower surface (204,304,404,504) of another plate of the plurality of inclined parallel plates forming a separation space (352,352,452,552) defined by the contacting surface (202,302,402,502), the pair of opposed upturned edges, and the lower surface of the another plate(204,304,404,504), characterized in that each upturned edge (220,230) comprises a first portion (206,207) extending toward the another plate, and a second portion (208,209) contacting the another plate. a contacting surface (202,302,402,502) for contacting the slurry; a lower surface (204,304,404,504) opposite the contacting surface; and, a pair of opposed upturned edges (220,230) upturned on the first and second longitudinal sides of the plurality of inclined parallel plates in a direction of the contacting surface (202,302,402,502), the pair of opposed upturned edges (220,230) forming a settling space, and in contact with the lower surface (204,304,404,504) of another plate of the plurality of inclined parallel plates forming a separation space (352,352,452,552) defined by the contacting surface (202,302,402,502), the pair of opposed upturned edges, and the lower surface of the another plate(204,304,404,504), characterized in that each upturned edge (220,230) comprises a first portion (206,207) extending toward the another plate, and a second portion (208,209) contacting the another plate.