A precast dam structure includes at least two precast segments coupled together via linkages and a flow path structure. The flow path structure defines a flow path having an intake port and a draft port and is associated with at least one of the at least two precast segments. The flow path structure is configured to provide a change in flow direction, either internally or externally, from the at least one of the at least two precast segments.

A fence includes a wall panel portion having an upper edge and a lower edge, and a plurality of tubular pockets running across the wall panel between the upper edge and the lower edge. The tubular pockets each configured to receive a mounting post. The upper edge and the lower edge can each include a channel in which a draw cord is threaded. The fence can further include an apron portion extending from the lower edge of the wall panel portion. Methods of installing the fence are also provided.

A sediment retaining structure in water courses including a net which is arranged transversely so as to occupy all the bed of the water course. At least one opening having a width less than the width of the bed is formed on the bottom of the net which delimits at least one side thereof.

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.

Garbage collection apparatus for the collection of plastic from a surface of a waterbody with a waterflow. The garbage collection apparatus comprises a base and a horizontal beam mounted pivotably around a vertical axis on the base. Said horizontal beam is mounted displaceably in vertical direction on the base, where said horizontal beam on an underside comprises a collection device for collecting plastic floating on the surface of the waterbody. The collection device extends vertically away from the horizontal beam and extends horizontally in a direction opposite the direction of the water flow in the waterbody, which collection device comprises one of either bars or mesh, where said garbage collection apparatus comprises a first actuator for displacing the horizontal beam in or into vertical direction and where said collection device is connected rotatably to the horizontal beam and where the rotation axis of the collection device relative to the beam is parallel to a main axis of the horizontal beam and where the garbage collection apparatus comprises a controller. Method for removing plastic from the surface of a waterbody with a water flow, with a garbage collection apparatus.

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.

The present invention relates to an economical debris flow blocking dam structure and a construction method thereof. The present invention aims to provide an economical debris flow blocking dam structure with simple structural design, construction convenience, safety, reliability and strong practicality, and a construction method thereof, to reduce concrete usage amount and save investment. A technical solution of the present invention is as follows: the structure has an excavated foundation surface, and a dam body of the blocking dam is composed of a key wall arranged at a dam toe, dam body concrete wrapped on an outer surface of the whole blocking dam, concrete masonry block stones filled inside the blocking dam, and a plurality of drain holes formed in the dam body in a top and twin-side bottom shape; an open and centralized overflow weir is arranged on the top of the blocking dam; an overflow surface has a horizontal middle and extends to two sides along a longitudinal slope i of 10-20%; and the key wall is anchored on the foundation surface through joint bars stretching into bedrock, and an anti-scouring pit is formed close to a downstream side of the key wall. The present invention is applicable to blocking structures of debris flow gully control and other similar engineering.

A continuous belt screen assembly and related methods of controlling flow through the continuous belt screen assembly. The continuous belt screen assembly has a base, opposed sides, an inlet and at least one outlet. The assembly, in use, is arranged in a channel having a pair of opposed walls and containing a liquid. A flow restrictor for the continuous belt screen assembly includes a body mountable to a downstream end of the assembly to restrict the liquid flowing out of the at least one outlet. The body defines at least a portion of at least one aperture configured to control a level of the liquid upstream of the body.

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.