A separator for separating solids from a slurry comprising - a rotating container (103, 203) comprising a side wall and two end walls (123a, 123b) where said rotating container (103, 203) is arranged on a support; where said rotating container (103, 203) is rotatably connected to said support; - said rotating container is provided with at least a first inlet for the slurry and at least a first opening; - said rotating container (103, 203) comprises at least one second opening for a first filtrate; - a feed and screw press (141,241,145,245) being provided inside said rotating container (103, 203), wherein said feed and screw press comprises a tube in which in the direction of the flow a feed screw and then a press screw are located and wherein said tube comprises around said press screw at least one hole (148, 248), wherein said feed and screw press comprises a funnel on said tube for receiving a first retentate for feeding said feed screw, wherein the first retentate is transported by the feed screw into the screw press, where said first retentate is pressed to produce a second retentate and draining off a second filtrate through said at least one hole (148, 248) into said rotating container; - at least one lift paddle (137a, 137b, 237) being provided inside said rotating container (103, 203) where a first part of said lift paddle is arranged along an inner surface of said side wall of said rotating container (103, 203) so that during rotation of the rotating container the first retentate is lifted via said at least one lift paddle and slides into said funnel due to gravity, - a transport screw (143, 243) is arranged through said first opening of said rotating container, coaxially with and downstream to said press screw (145, 245), wherein a first outlet is provided at the end of said transport screw for discharging said second retentate, wherein said transport screw is capable of rotating independently of said feed and press screws and can be controlled independently from said feed and screw press. - a rotating container (103, 203) comprising a side wall and two end walls (123a, 123b) where said rotating container (103, 203) is arranged on a support; where said rotating container (103, 203) is rotatably connected to said support; - said rotating container is provided with at least a first inlet for the slurry and at least a first opening; - said rotating container (103, 203) comprises at least one second opening for a first filtrate; - a feed and screw press (141,241,145,245) being provided inside said rotating container (103, 203), wherein said feed and screw press comprises a tube in which in the direction of the flow a feed screw and then a press screw are located and wherein said tube comprises around said press screw at least one hole (148, 248), wherein said feed and screw press comprises a funnel on said tube for receiving a first retentate for feeding said feed screw, wherein the first retentate is transported by the feed screw into the screw press, where said first retentate is pressed to produce a second retentate and draining off a second filtrate through said at least one hole (148, 248) into said rotating container; - at least one lift paddle (137a, 137b, 237) being provided inside said rotating container (103, 203) where a first part of said lift paddle is arranged along an inner surface of said side wall of said rotating container (103, 203) so that during rotation of the rotating container the first retentate is lifted via said at least one lift paddle and slides into said funnel due to gravity, - a transport screw (143, 243) is arranged through said first opening of said rotating container, coaxially with and downstream to said press screw (145, 245), wherein a first outlet is provided at the end of said transport screw for discharging said second retentate, wherein said transport screw is capable of rotating independently of said feed and press screws and can be controlled independently from said feed and screw press.