In the latest edition of the Terra et Aqua magazine, International Association of Dredging Companies (IADC) presented an interesting story on the ‘Monitoring of Settling and Consolidation of Mud after Water Injection Dredging in the Calandkanaal’.
As regular maintenance and relocation of sediment deposits are highly expensive, Port authorities seek more efficient solutions for reducing the costs and CO2 emissions of maintenance dredging.
One solution, water injection dredging (WID), is carried out for maintaining the sediment deposits which predominantly consist of clay and silt.
So far, WID proves to be a cheaper solution by leaving the sediment in place, eliminating substantial costs of the relocation.
Optimising current maintenance strategies can substantially reduce the costs and CO2 emissions.
Water injection dredging (WID) can be efficiently applied for fluidising and transporting the sediment within the port area.
The IADC paper presents the results of testing WID at the Calandkanaal and efficiency of WID compared to TSHD in the Calandkanaal.
In order to assess the cost and CO2 efficiency of WID and TSHD, researchers had to analyse available historical dredged volumes and CO2 emissions from the fuel consumption data from the last two years.
To read the whole story please go to https://www.iadc-dredging.com/article/monitoring-dredging-calandkanaal/.