Hydraulic Dredges

 

Hydraulic dredges are the go-to method to for dredging lakes, rivers, ponds, and streams.  Dredges can run continuously and pump large volumes of sediment through a pipeline, eliminating the need to transport sediment in less efficient methods.  The slurry discharged from the end of the pipeline is usually dewatered, a process that separates the sediment from the water.  Ponds, belt presses, dewatering screens, and geosynthetic dewatering tubes are common dewatering methods.  Once the slurry is dewatered clean water can be returned to the source to maintain the water level if necessary - hydraulic dredging.

A hydraulic dredge is placed into the water and floats.  It generally has a cable traverse system that it can move along, a winch/cable system with spuds, walking spuds, or a type of paddle wheel propulsion.  A dredge consists of a cutterhead, ladder, pontoons, operator station, engine (diesel or electric), and a pump.  Once in place the dredge is connected to a pipeline.  The cutterhead is lowered beneath the water surface and the pump is engaged.  The cutterhead rotates to loosen the sediment so that it is vacuumed into the pump and discharged through the pipeline.  The operator has many gauges, meters, and devices to determine the location and amount of material being dredged - mechanical dredging.

Choose for strength, innovation and flexibility with a complete service package. From design, engineering and manufacturing to assembly and service for your dredging application. Generally, speaking a cutterhead dredge is ideal for many types of sediments and the smaller point of contact can utilize its power to cut or remove various types of consolidated materials such as sand or gravel.  The cutterhead can be used as a means to screen larger debris from entering the suction line and pump.  An auger dredge is more advantageous when covering a large area with low density sludge or clay sediment. For more information please visit our site https://www.Pacificmaritimegroup.com/