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WO/2006/107984A1 |
A collector for removing sediment from a waterway. The collector has a housing (24) with an opening (38) and an internal cavity (44) for receiving particles. Means for adjusting the type of sediment is provided. An inlet (120) communicat...
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WO/2006/093214A1 |
A transportation system and a transportation method. The transportation system comprises a siphon tube (S) sucking out dredged sediment (1) in a large capacity water storage pond (D) such as a dam together with water by a siphon action a...
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WO/2006/071010A1 |
The present invention relates to a fishway block, capable of allowing even fish having poor swimming ability to easily migrate upstream and downstream by reducing the speed of water flow. The fishway block comprises a bottom panel (13), ...
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WO/2005/124032A1 |
The invention relates to a device for guiding fish past a hydro power plant which is placed in a river and which comprises a weir and at least one turbine arranged in the weir, which device comprises: -a funnel-shaped collecting bin with...
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WO/2005/103390A1 |
A bottom seal (9) at the lower end of a step screen (1) adapted to convey solid particles and other objects positioned in flowing water (2). The step screen has a grating (3) comprising alternately fixed and movable lamellar rods (4, 5) ...
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WO/2005/102494A1 |
A waste water filter has a perforated conveyor made up of a plurality of segments. Each of the segments has a shelf portion to lift trapped filtered material. Drive chains on opposite sides of the conveyor rotate the conveyor in an oblon...
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WO/2005/100779A1 |
The invention relates to an system (10) that can be installed and fixed in flowing inland water or sea water, said system being provided with a device (11) that can be rotatably driven by flowing water and comprises a peripherally fixed ...
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WO/2005/097290A1 |
The invention relates to a screening grid for discharging solids from a liquid flow. Said grid comprises a driveable screening strip (5) that can be inserted into the liquid flow and comprises two lateral link chains (9) between which ca...
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WO/2005/080690A1 |
The invention relates to hydropower engineering and can be used for a concrete dam provided with a spillway opening which is embodied in the body thereof for passing maximum or submuximum flood discharges in the impossibility of sending ...
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WO/2005/066420A1 |
Provided are a system and method for preventing the inflow of marine organisms into seawater intakes of power stations. The system includes a marine organism lifting apparatus for lifting the marine organisms and a marine organism discha...
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WO/2005/054584A1 |
A flood gate (10) has a fixed plate with four flow apertures (24, 26, 28, 30). A rotatable plate (62) is mounted on a shaft (82) for rotation relative to the fixed plate (12). The rotatable plate (62) has four flow apertures (64, 66, 68,...
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WO/2005/051514A1 |
The invention relates to a cleaning device for a blocked trash screen (14) through which waste water (2) flows in a waste water installation, and which is used to extract contaminants carried by the waste water (2). The inventive cleanin...
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WO/2005/040500A2 |
A water filtration panel and a system containing the same are disclosed. The water filtration panel include a substantially rigid frame having a first face, a second face, and an inner dimension; a sheet of fabric material that permits w...
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WO/2005/033422A2 |
The invention relates to a method for dredging without the significant causing of pollution nor significant consumption of water. The invention concerns the field of civil engineering, the dredging of impoundments and of watercourses. Co...
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WO/2005/033420A1 |
The present invention relates to an automatic variable fishway. More particularly, an automatic variable fishway by water level sensed of the invention can automatically vary its height to uniformly maintain the quantity of water drained...
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WO/2005/019548A1 |
A drive system (6) for driving a screen in a fluid screening system comprises a hydraulic or pneumatic motor (301) coupled to a drive shaft of the screen (2). The system (6) is sized to provide the torque required to drive the screen thr...
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WO/2005/019672A2 |
A drive system for driving a screen (2) in a fluid screening system comprises an electric gear motor (101) equipped with a mechanical torque limited coupling (103). The system is sized to provide the torque required to drive the screen t...
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WO/2005/014937A2 |
An apparatus or biopassage (A) includes a housing (20) dimensioned for receipt in a waterway during an increased flow event. The housing has a passage: (26) that provides a region of reduced flow generally irrespective of the flow exte...
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WO/2005/007975A1 |
The invention relates to a fish pass which is used to overcome a dam level. Said fish pass comprises an upstream water inlet (2) and a downstream water outlet (3) and basins (4) arranged there between, one behind the other and on alterna...
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WO/2005/005733A2 |
The invention relates to a water-permeable dam which can be used to control a permanent flow of water and the water flow velocity. The inventive device comprises adjacent water-filled (2) shafts which are hydraulically-interconnected by ...
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WO/2004/101105A1 |
Disclosed is a fine-screened grid wherein a screening grate (2) is provided. A slider (3) is guided on said grid grate. The slider (3) is disposed on a slider arm (15) which, together with a guide lever (9), forms a knee lever, thereby e...
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WO/2004/094733A1 |
An anti-flooding device with possible displacement of the waters for the exploitation of water energy comprising a double closing system with an outer or inner cylindrical element with automatic, serai-automatic or manual operation, cons...
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WO/2004/083530A1 |
The inventive fish-passing facility comprises blocks which are arranged across a stream, offset with respect to each other along said stream and form side holes in fish channels by the side faces thereof. Fish-resting chambers disposed a...
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WO2004009911B1 |
A safe and effective fish ladder for assisting fish in overcoming dams, especially in the upstream direction is described. The ladder comprises a series of relatively vertical open pools, which decrease in size in the upstream direction,...
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WO/2004/046466A1 |
A deposit conveying mechanism capable of efficiently conveying deposits. It comprises a suction port (12), a vertical pipe (13), a horizontal pipe (14) extending transversely substantially horizontally, the horizontal pipe (14) being sup...
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WO2003046292A9 |
Present invention relates to a spilway of a hydro power plant dam, weir or similar hydraulic structure with improved dissipation object. To this aim, in the area of at least one sidewall (4', 4'') of the spilway at least one dissipation ...
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WO2003084877B1 |
A system (20) for removing sediment from a waterway (22) includes a collector housing (24) dimensioned for receipt in the waterway (22), having an opening (38) that receives water and sediment therethrough.
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WO/2004/028976A2 |
An automatic screening apparatus for removing debris from a liquid stream includes a drive mechanism mounted to a support frame. A screen connects to the support frame and collects debris while allowing the liquid to flow through. The dr...
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WO/2004/018975A2 |
An automated metering gate having a semicircular shaped flow control leaf gate (24) which is automatically controlled to permit undershot and overshot water flow. The flow control leaf gate is included in a flow control structure (10) wh...
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WO/2004/007846A2 |
A fish test circuit (1)for the evaluation of waterway barrier bypass systems is shown and described, the circuit including a conduit (10) having at least one bypass system test station (20), and preferably a plurality of separate bypass ...
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WO/2003/083223A1 |
In the present invention, a cylinder (4) for opening and closing a water gate body (1) is installed in a sealed space (1a) of the water gate body (1), so that a possibility for malfunction of the cylinder by foreign objects is greatly de...
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WO/2003/062535A1 |
Apparatus for making fish wandering possible upwards or downwards past a waterfall, for instance a waterfall having a turbine apparatus therein, or in an available salmon ladder, and in which a fish wandering channel (3) is provided asid...
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WO/2003/059487A1 |
A bar screen system for fluid channels has individually removeable bars (26). The bars are connected to at least two screenfield bar holders (33, 35). Each holder has a plurality of slots (32) in which the bars insert. A removeably mount...
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WO/2003/031335A2 |
An automatic debris removal system for screening an effluent screen. The system comprises a support frame (22), screening bucket (18) positionably connected to the frame, and a camming system (64, 66) attached to the frame and the bucket...
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WO/2003/023148A1 |
Apparatus (10) is defined for regulating the level of liquid on a first side of a barrier (12) with respect to a moveable level of liquid on a second side of the barrier. The apparatus includes an inlet conduit (30) for positioning on th...
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WO/2003/023149A1 |
A fishladder (10) for use along a waterway includes a channel having a bottom wall (16), a pair of opposing, upwardly extending sidewalls (18a, b) and opposing open ends. A series of projections (20) are disposed along the channel betwee...
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WO/2003/010390A1 |
A sluice system includes a body having an inner space, an upper stream pipe for allowing water to flow into the inner space of the body, a lower stream pipe for discharging water from the main body, a fish compartment having a fish entra...
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WO/2002/057549A1 |
The present invention relates to a self-cleaning filter grating which is constructed such that the grating consists of discrete parallel stay-shaped filter elements, which may be moved alternately relative to each other, thereby ensuring...
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WO/2002/053843A1 |
A fishway installed at the head part between the upstream and downstream sides of a river crossing structure, comprising a stepped water channel part and side wall parts gradually rising upward from both right and left sides of the stepp...
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WO/2002/046543A1 |
The invention relates to a device, especially a step rake with stationary and moveable blades whose movement enables separation materials to be separated and removed from a liquid flowing through said rake.The lower ends of the blades ar...
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WO/2002/018720A1 |
A screen assembly in which the screen (10) is in the form of an inverted semi-circular trough the foul flow (A) to be screened approaching the underside of the screen so that debris which is filtered falls away from the screen by gravity...
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WO/2002/016698A1 |
The invention provides a control gate (10) adapted to be installed across a channel (12) for liquids. Control gate (10) has a barrier member (22) that is pivotally mounted at or adjacent the base (20) of flow channel (12) and at least on...
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WO/2001/088291A1 |
A self-cleaning device, especially for trash screening, has the shape of a grate (1). Before the grate, above the surface of in-flowing raw liquid, a screening container (7) is placed, whose one side wall is rotary fixed at its bottom ed...
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WO/2001/077442A1 |
The invention relates to a device for diverting fish migrating downstream, comprising a step in the flow, arranged perpendicular to the direction of flow and situated in the floor of a turbine inlet channel, with one or several funnel-sh...
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WO/2001/074152A1 |
A device for facilitating the passage of at least one partial material flow and possibly separating of another partial material flow, being a constituent of a material flow, which device has the form of a grating, built from a number of ...
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WO/2001/075240A1 |
The present invention relates to an up-flow rake bar screen having a multiplicity of bars which are parallel to one another and which are spaced from one another across the screen. At least a portion of each bar is curved so that, when t...
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WO/2001/042568A1 |
A deposit discharge system, comprising a discharge tube (10) having a suction port (12) opened so as to face a water bottom face (29), a straight tube part (13) extending upward from the suction port (12), and a discharge port (18) commu...
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WO/2001/032991A1 |
The present invention relates to an automatic water gate which is installed in a canal such as an irrigation canal of a river or a relatively small reservoir so as to maintain a stored water level within a certain extent, and an object t...
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WO/2001/030481A1 |
Apparatus for use in a sewerage system having a channel (20) for sewage flow (22), the channel (20) having an overflow weir (24) over which an excess flow is discharged when the flow in the channel (20) exceeds a predetermined level, in ...
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WO/2001/025546A1 |
Method and apparatus for fish migration past dams and other water barriers. A preferred embodiment (100) comprises a conduit (101) passing from downstream side (22) of water barrier (10) to upstream side (21) of the barrier, flow-control...
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