What is the typical depth range and dredging capacity of a cutter suction dredger?

A cutter suction dredger typically operates in a depth range of 10 to 25 meters and has a dredging capacity of up to 15,000 cubic meters per hour. This type of dredging vessel is equipped with a rotating cutter head at the end of a suction pipe that cuts through sediment and debris and transports it to the surface for disposal. Cutter suction dredgers are commonly used for various types of dredging operations, including port and harbor maintenance, land reclamation, and underwater excavation.

More info: https://oiltech.nl

What are the main components of a cutter suction dredger and what are their functions?

Cutter Suction Dredger

 A cutter suction dredger is a type of dredging vessel used to excavate and remove material from the seabed, riverbed or lakebed. The main components of a cutter suction dredger include:

    Cutterhead: This is a rotating mechanical device mounted on the front of the dredger that is used to cut and break up hard materials such as rocks and clay. The cutterhead is powered by electric motors or hydraulic systems.

    Suction pipe: This is a large diameter pipe that is used to suck up the material that has been cut by the cutterhead. The suction pipe is connected to the dredger's pump, which creates a vacuum that draws the material up into the dredger.

    Pump: This is a large centrifugal pump that is used to transport the material from the suction pipe to the discharge pipeline. The pump is driven by an electric motor or a diesel engine.

    Discharge pipeline: This is a long, flexible pipe that is used to transport the dredged material from the dredger to the designated disposal area. The discharge pipeline is equipped with a variety of valves, including gate valves and butterfly valves, to control the flow of material.

    Spuds: These are long steel poles that are lowered into the seabed or riverbed to anchor the dredger in place during operation. The spuds can be raised and lowered by hydraulic systems, allowing the dredger to move from one location to another.

    Control room: This is the central command center where the dredger's operator controls and monitors the dredging process. The control room is equipped with a variety of sensors, gauges, and computer systems that provide real-time information about the dredger's performance.

Overall, the cutter suction dredger works by cutting and breaking up the material with the cutterhead, sucking it up with the suction pipe, transporting it with the pump, and discharging it through the discharge pipeline. The spuds keep the dredger in place while the operator controls the process from the control room.

More info here: https://oiltech.nl/

 

What is a jet suction dredger, and how does it work?

 Jet Suction Dredger

A jet suction dredger is a type of vessel used in dredging, which is the process of removing sediments and debris from the bottom of bodies of water such as rivers, lakes, and harbors. The vessel is equipped with a powerful pump, which creates a high-velocity jet of water that is used to loosen the sediment and debris from the bottom. The dredger then uses suction to draw the loosened material into a large holding tank, where it can be transported away from the site.

The process of using a jet suction dredger starts with the vessel positioning itself over the area that needs to be dredged. The dredger then lowers a long tube, called a suction pipe or suction arm, to the bottom of the water body. The pump on the dredger creates a high-velocity jet of water, which is directed through a nozzle at the end of the suction pipe. The water jet loosens the sediment and debris from the bottom, and the suction created by the pump draws the material up into the suction pipe and into the holding tank on the dredger.

Once the holding tank is full, the dredger transports the material to a designated location, where it can be offloaded and disposed of or reused. This process can be repeated until the entire area has been dredged to the desired depth or level.

Jet suction dredgers are often used in harbor maintenance, where they can remove sediment and debris that has accumulated around piers, docks, and shipping channels. They can also be used in environmental remediation projects, where contaminated sediment needs to be removed from water bodies.

Interested to dredge your Harbor or Marina? Feel free to contact us!

✴ Read more about this post on: https://oiltech.nl/en/dredgers/suction-dredger

 

Efficient and Eco-Friendly Jet Suction Dredgers for Waterways

A high-tech and environmentally-friendly dredging equipment, the jet suction dredger, breaks down sediment and rocks in waterways using high-pressure water jets. The material is then transported to a designated storage area via a suction pipe, making it a preferred option over other types of dredgers that use mechanical cutting heads or buckets. Our specially designed jet suction dredgers are efficient and versatile, and are ideal for cleaning reservoirs, sand stocks, docks, piers, and harbors.

Using a high-pressure water jet to break down the sand layer, the jet suction dredger removes solids with the sand pump and discharges them to a designated area on land. Customizable to meet specific dredging depth, working capacity, and discharge distance needs, the dredger is powered by a main diesel engine that provides energy to the gravel, sand, slurry dredge pump, and the hydraulic system. The maximum dredging depth for the jet suction dredger is 15 meters.

Offering suction dredgers ranging from 6 inches to 20 inches in various sizes, we base our standard pump selection and system design on WEIR production and pipeline analysis sheets, which use Warman Dredge pumps.

 https://www.oiltech.nl/en/dredgers/suction-dredger