Anti-waste system at sewer outlets
Invented 20 years ago by our team, the best retention system in the world.

Discover Thalassa: A retention net, a barrier against waste
The Thalassa is a waste recovery system that has been invented and implemented for over 15 years. It is the pioneering anti-waste net for sewer outlets.
The system is made of a custom-woven, knotless mesh, which gives it high resistance and incomparable ease of cleaning. Its shock emptying system makes the work of operators easier. Hoops are integrated into the net to keep it in place with an optimal opening even at high flow rates, which allows for a better holding capacity.
2 to 10m3
Containment capacity.
Stainless Steel
Integrated rings to maintain optimal placement.
France
Entirely made in France.
Custom-Made
Tailored manufacturing.


Effective solutions for anti-waste at stormwater outlets
V₂O Marine offers innovative solutions to prevent pollution in aquatic environments with its outlet retention net. Specifically designed for stormwater drainage networks, this product intercepts waste before it reaches rivers, watersheds, or natural environments.
A High-performance net for sustainable water management
The outlet net from V₂O Marine acts as a protective filter by capturing debris and pollutants carried by stormwater runoff. Installed at discharge points in drainage networks, this net retains solid waste such as plastics, sludge, and organic residues, preventing their dispersion into rivers and groundwater. By limiting the spread of effluents, it helps preserve water quality and reduce impacts on receiving environments.
A solution adapted to urban Infrastructures
With its robust design, this net integrates seamlessly into stormwater drainage systems in urban and rural areas. It is ideal for managing runoff from impervious surfaces such as parking lots or roads, where the risk of flooding and overflow is high during heavy rains. Its preventive installation in drainage infrastructure, such as retention basins or storm overflow chambers, facilitates the management of stormwater during periods of precipitation.
A Commitment to Ecosystem Preservation
By intercepting waste before it enters aquatic environments, this net reduces accidental pollution and protects biodiversity. It also lessens the treatment burden on wastewater plants and preserves ecosystems in sensitive areas. This system allows clean water to be discharged while meeting the requirements of development projects and flood management.
Multiple benefits for sustainable management
The outlet net from V₂O Marine contributes to integrated stormwater management. It helps reduce urban pollution, facilitates the drainage of collected water, and improves the sizing of hydraulic infrastructure. Its durability makes it an essential tool for project managers seeking to combine performance and environmental respect.
With this net, V₂O Marine provides a reliable and eco-friendly solution for managing waste at stormwater outlets and protecting water resources.