Underwater cable robot

The underwater cable robot will be developed by TECNALIA and CNRS-LIRMM as an upgrade of the COGIRO cable robots used in industrial plants that will be adapted to the MAELSTROM marine underwater activities. 

How does it work?
The underwater cable robot is composed by:

  • A floating platform to support the underwater cable robot and the industrial equipment.
  • 8 cables rolled onto winches and connecting the floating platform to an underwater mobile robot head. By controlling the length and tension of the cables, we can remotely control the position and orientation of the robot head accurately.
  • A set of sensors for underwater perception to provide visual-feedback.
  • The seabed robot will have 2 modes of operation, using different tools mounted on the robot head: 
    • A drudge to collect smaller litter on the seabed as well as floating plastics in the water column. To provide selective cleaning, the power of the drudge is regulated.
    • gripper and hook to grasp larger litter like tires, parts of boats, fishing nets etc.  These items will be deposited in a basket, itself lifted on the floating platform by a crane.

Where is the underwater cable robot tested?
MAELSTROM will validate the underwater cable robot in the Venice Lagoon as well as in the coastal area around Venice. 

Bubble Barrier

Developed by The Great Bubble Barrier, the Bubble Barrier consists of an innovative and smart technology which can intercept plastic pollution in rivers before it reaches the ocean.

How does it work?
The Bubble Barrier comprises of three main components: the bubble curtain, the compressor, and the catchment system.

The three components are designed to work together to create an optimal solution at each location.

The Bubble Barrier, designed to operate continuously (24/7), is tailored specifically to the waterway and installed with a catchment system matched to the river properties.

  • The bubble curtain is created by pumping air through a perforated tube on the bottom of the waterway.
  • This bubble curtain creates an upward current which directs the suspended plastics to the surface of the water, preventing it from flowing downstream.
  • The system is placed diagonally in the river, making use of the natural flow of the river: this way, the plastic waste is directed to the side and into the catchment system at the riverbank, where it is retained and removed from the water.

Where is The Great Bubble Barrier tested?
MAELSTROM will implement, test and validate the Bubble Barrier in a suitable location in Portugal.