An apparatus for applying pressure to an edge surface comprises a frame, a first roller, a second roller, a rotation-control member, a first biasing member, and a second biasing member. The first roller and the second roller are coupled to the frame and are rotatable relative to the frame. At least one of the first roller or the second roller is translatable relative to the frame. The rotation-control member is movable relative to the frame, controlling rotation of the first roller and the second roller relative to the frame. The first biasing member is coupled to the frame and is configured to operate in tension. The second biasing member is positioned, in compression, between the frame and the rotation-control member.

An apparatus for applying pressure to at least a portion of an edge surface of a workpiece comprises a frame, a first roller, a second roller, a rotation-control member, a first biasing member, and a second biasing member. The first roller and the second roller are coupled to and are rotatable relative to the frame while at least one of the first roller or the second roller is translatable relative to the frame. The rotation-control member is coupled to and is movable relative to the frame, controlling rotation of the first roller and the second roller. The first biasing member is coupled to the first roller and to the second roller and configured to operate in tension. The second biasing member is positioned, in compression, between the frame and the rotation-control member.

A separating machine separates a food source material into first and second food portions. The separating machine a separating arrangement with a roller assembly; a belt assembly including a belt; a drum assembly including a drum, and holes extending between the surfaces of the drum. The drum assembly is arranged proximate to the belt assembly to define a separation area. The belt assembly is arranged relative to the belt assembly such that the food source material delivered by the inlet assembly into the separation area is pressed by the belt against the outer surface of the drum and the first food portion is pressed through the holes into the drum interior, thereby separating the first and second food portions. The separating machine further includes a belt tensioning device configured to reposition at least a portion of the roller assembly to adjust a tension of the belt.

A soft material separator (1) has a perforated drum (2) A pressing band (3) is guided along a circumferential section (19) of the perforated drum (2) and can be operated together with the perforated drum (2). A feed zone (7), from which a substance mixture (14) consisting of substance components (12, 13) of different consistencies is drawn in between the perforated drum (2) and the pressing band (3) to separate the substance components (12, 13). For optimization in terms of wear and energy consumption without any or without significant losses in effectiveness of the device, a detection system (9) is provided to quantitatively determine the fill level of the feed zone (7), and a control apparatus (10) which is connected to the detection system (9) is provided to adjust the speed of the perforated drum (2) and of the pressing band (3) depending on the fill level.

An apparatus for applying pressure to at least a portion of an edge surface, which bridges opposing faces of a workpiece, comprises a frame, a first roller, a second roller, a rotation-control member, a first biasing member, and a second biasing member. The first roller and the second roller are coupled to the frame, are rotatable relative to the frame about a first pivot axis, and are translationally fixed relative to the frame. The rotation-control member is coupled to and is movable relative to the frame, controlling rotation of the first roller and the second roller relative to the frame. The first biasing member is coupled to the first roller and to the second roller and is configured to operate in tension. The second biasing member is positioned, in compression, between the frame and the rotation-control member.

A method and system of treatment of agricultural and industrial wastewaters that contain high concentrations of suspended solids, nitrogen, and phosphorus compounds is disclosed. The method and system includes pre-treating the wastewater, controlling the amount of coagulants used, and controlling the mean velocity used for mixing, surface loading rate, and solids loading rate. The method and system functions as a sedimentation unit and gas flotation unit (solid/liquid separator). The pH of the effluent wastewater is stabilized within the separator by ensuring that there is sufficient alkalinity to buffer the wastewater. Sufficient gas is produced in the coagulation reactions to float and concentrate the solids, which results in as high as 99 percent reduction in suspended solids, a 96 percent reduction of the phosphorus concentration, and a 50 percent reduction of the nitrogen concentration in the effluent from the separator.

A method and system of treatment of agricultural and industrial wastewaters that contain high concentrations of suspended solids, nitrogen, and phosphorus compounds is disclosed. The method and system includes pre-treating the wastewater, controlling the amount of coagulants used, and controlling the mean velocity used for mixing, surface loading rate, and solids loading rate. The method and system functions as a sedimentation unit and gas flotation unit (solid/liquid separator). The pH of the effluent wastewater is stabilized within the separator by ensuring that there is sufficient alkalinity to buffer the wastewater. Sufficient gas is produced in the coagulation reactions to float and concentrate the solids, which results in as high as 99 percent reduction in suspended solids, a 96 percent reduction of the phosphorus concentration, and a 50 percent reduction of the nitrogen concentration in the effluent from the separator.

An apparatus (100) for applying pressure to at least a portion of an edge surface (192) of a workpiece (190) comprises a frame (110), a first roller (120), a second roller (130), a rotation-control member (140), a first biasing member (150), and a second biasing member (160). The first roller (120) and the second roller (130) are coupled to and are rotatable relative to the frame (110) while at least one of the first roller (120) or the second roller (130) is translatable relative to the frame (110). The rotation-control member (140) is coupled to and is movable relative to the frame (110), controlling rotation of the first roller (120) and the second roller (130). The first biasing member (150) is coupled to the first roller (120) and to the second roller (130) and configured to operate in tension. The second biasing member (160) is positioned, in compression, between the frame (110) and the rotation-control member (140).

An apparatus (100) for applying pressure to at least a portion of an edge surface (192), which bridges opposing faces (194) of a workpiece (190), comprises a frame (110), a first roller (120), a second roller (130), a rotation-control member (140), a first biasing member (150), and a second biasing member (160). The first roller (120) and the second roller (130) are coupled to the frame (110) and are rotatable relative to the frame (110). At least one of the first roller (120) or the second roller (130) is translatable relative to the frame (110) along a first axis (101). The rotation-control member (140) is movable relative to the frame (110), controlling rotation of the first roller (120) and the second roller (130) relative to the frame (110). The first biasing member (150) is configured to operate in compression along a second axis (102). The second biasing member (160) is positioned, in compression, between the frame (110) and the rotation-control member (140).

An apparatus (100) for applying pressure to an edge surface (192) comprises a frame (110), a first roller (120), a second roller (130), a rotation-control member (140), a first biasing member (150), and a second biasing member (160). The first roller (120) and the second roller (130) are coupled to the frame (110) and are rotatable relative to the frame (110). At least one of the first roller (120) or the second roller (130) is translatable relative to the frame (110). The rotation-control member (140) is movable relative to the frame (110), controlling rotation of the first roller (120) and the second roller (130) relative to the frame (110). The first biasing member (150) is coupled to the frame (110) and is configured to operate in tension. The second biasing member (160) is positioned, in compression, between the frame (110) and the rotation-control member (140).