Apparatus for removal and collection of duckweed from a body of water comprising an engine, a turbine duckweed collection assembly having a housing with a duckweed collection inlet, a duckweed discharge outlet, and a well located between collection inlet and discharge outlet, a series of spaced elements supported on a rotatable shaft and located within well with the shaft connected to the combustible engine to rotationally drive spaced elements within well to create a vortex pumping action in the body of water drawing free floating duckweed into collection inlet, through well and out from discharge outlet, a platform supporting combustible engine and turbine duckweed collection assembly in an upright condition, and a collection manifold assembly connected to discharge outlet and includes a water permeable collection bag receiving and collecting duckweed while allowing water to escape therethrough and return back to the body of water.

The invention relates to a separation device for removing objects from a water flow, comprising a separation screen and a channel which forms an inlet and an outlet for the separation screen, wherein, during operation, a head water having a head water level can be provided in the inlet upstream of the separation screen and a tail water having a tail water level can be provided in the outlet downstream of the separation screen, wherein the outlet comprises an outlet cross-section for the water flow. The separation device is characterised by a damming body, which can be adjusted via an actuator, for immersion into the outlet, said damming body being able to be adjusted at least between a first position and a second position, wherein the outlet cross-section is smaller in the first position and the outlet cross-section is larger in the second position, and comprising a control device, wherein the control device includes a first operating mode, in which the flow rate in the area of the separation screen is increased by bringing the damming body from the first position to the second position, wherein the control device includes a second operating mode, in which the flow rate in the area of the separation screen is changed by bringing the damming body from the second position to a third position, wherein the outlet cross-section in the third position is smaller or larger than in the second position, and wherein the control device is configured to automatically activate the first and/or the second operating mode. The invention also relates to a method for operating such a separation device.

A barrage with a function of collecting floating garbage on a water surface is provided. It includes a first dam body as a main body of the barrage provided with multiple built-in low water level drainage channels and high water level drainage channels, a second dam body provided with multiple notches for converging floating garbage on the water surface, a garbage collecting and storing equipment arranged between the first dam body and the second dam body and a solar power generating equipment. The garbage collecting and storing equipment maintains running of the garbage conveyor belt by utilizing electric energy provided by the solar power generating equipment, thereby collecting garbage in a garbage pool beside the barrage. It not only has conventional functions of the barrage, but also greatly saves cost of manually salvaging garbage and avoids water pollution caused by accumulation of garbage on the river surface.

A barrage with a function of collecting floating garbage on a water surface is provided. It includes a first dam body as a main body of the barrage provided with multiple built-in low water level drainage channels and high water level drainage channels, a second dam body provided with multiple notches for converging floating garbage on the water surface, a garbage collecting and storing equipment arranged between the first dam body and the second dam body and a solar power generating equipment. The garbage collecting and storing equipment maintains running of the garbage conveyor belt by utilizing electric energy provided by the solar power generating equipment, thereby collecting garbage in a garbage pool beside the barrage. It not only has conventional functions of the barrage, but also greatly saves cost of manually salvaging garbage and avoids water pollution caused by accumulation of garbage on the river surface.

A gripper device comprises a gripper with a gripper arm rotatable around a rotation axis such that the gripper is movable between an open end position and a closed end position, and a hoisting device connected to the gripper and comprising a first cable and a second cable which are each connected with their one outer end to the gripper and are each connected with their other outer end to respectively a first and second hoisting means for raising and lowering the gripper with the cables, wherein each hoisting means is, driven by a separate drive, wherein a controller transmits the same control signal to both drives for the purpose of raising or lowering the gripper, and each drive comprises a motor with internal slippage or a slippage coupling so that synchronous running of the hoisting means is automatically realized.

A conveyor belt filter device for mechanically cleaning a polluted liquid includes an endless filter belt formed by pivotably interconnected filter elements, the filter elements having edges that extend parallel to the joint axes and a filter gap that has a gap seal sealing the filter gap formed between opposing edges of adjacent filter elements, said gap seal having a compressible sealing strip arranged on one filter element edge, wherein an inflow strip is arranged at the opposite edge, the flow impinging on the inflow surface of the inflow strip, said inflow strip extending parallel to the sealing strip and having a sealing surface located opposite of the inflow surface and is in contact with the sealing strip, a movement gap formed between a strip edge of the inflow strip, said strip edge extending parallel to the sealing strip, and the filter element edge provided with the sealing strip.

The present invention relates to a rotary screening apparatus, and more particularly, a rotary screening apparatus which is installed in an open channel such as drain pump station, water supply intake station, irrigation channel, sewage treatment plant and dam etc. to allow smooth removal of inclusion.

The present discloses a waste screening apparatus comprising: a main body; a waste screener vertically and tiltedly disposed in the main body to screen wastes in the input water and to allow waste-removed water to be discharged through water discharge holes defined in both side faces of the main body respectively, wherein the waste screener vertically circulates in a conveyor manner, wherein the input water is input to a front, rear and bottom of the waste screener; wherein the main body includes: both side walls having the water discharge holes defined therein respectively to allow waste-removed water to be discharged out from the waste screener therethrough; and a rear blocking wall disposed at a rear of the waste screener to be spaced from the waste screener, wherein the input water passes through front and rear portions of the waste screener with wastes being removed from the input water, and, then, is discharged out through the water discharge holes defined in the both side walls respectively.

A product that is an apparatus for removing debris from water containing such debris using a perforated plate, a backer plate, and a skimmer, positioned adjacent the back of the perforated plate to provide a means of removing debris from the perforated plate without scraping the debris from the perforated plate, the skimmer bar and the backer plate being synchronized in their movement.

A system for reducing contaminants in body of water is shown and described. The system has a first land mass located within a body of water. A sediment trap, located on the floor of the body of water, is configured to collect sediment. Enclosed within the first land mass is a tussock mass area, surrounding a central area, and configured for collecting sediment and building a second land mass. The central area of the system is configured for removing contaminants from sediment. Sediment is moved from the sediment trap to the central area by a first ingress conduit and a pumping system. Filtered water migrates from the central area to outside the first land mass via an egress conduit; contaminated sediment is sequestered in the central area enclosed by the tussock mass area.