![]() ![]() The water-jetting system breaks the material and feeds the pump or dredge without tearing or puncturing the liner, which is possible if a cutterhead could do. Water-Jetting systems are ideally used in liner dredging applications where ponds, basins and sumps are lined with plastic poly, concrete, or clay liners. Water jetting systems usually come equipped with a number of nozzles which can blast water several hundred psi. Water-Jetting Systems are nozzles attached to the suction of a pump that shoots high-pressure water jets to break up consolidated material, increasing the amount of material fed to the pump or dredge. The cutterhead is mainly used for beach dredging, river dredging or any other type of shallow water dredging of up to about 30-ft and without a liner present. The rotating cutterhead breaks up consolidated material such as compacted sand, mud, and sludge, helping feed material into the pump. These cutterheads usually rotate between 15 to 60 rpm and are equipped with specially designed cutter teeth around the attachment. CutterheadsĬutterheads are used when there is a fixed boom such as a ladder dredge or excavator with a slurry pump attachment. ![]() The four primary methods of agitating material while pumping or dredging are the use of cutterheads, water-jetting systems, augers, or mixers. Sediment agitation is important in applications in which the material is densely consolidated, has a liner, or in situations where optimal solids content versus water ratio is crucial. For these materials, it is important to determine the best method to agitate the target material for optimal pumping and dredging. In dredging and pumping applications, sometimes you may encounter sediment that is hard and densely packed, making it difficult to pump. ![]()
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