Our obligation is to protect and improve our waters, and to prevent negative effects of human activities
Water environment services
WATER IS OUR LIFE
This is what we do
Bubble curtains Silt curtains Sediment treatment
The bubble curtiains prevent damage from explosions and pile driving, Silt curtains prevent particle spreading from worksites into waters
All installations and services are tested in real life, effects are controlled and documented. Silt curtains effects are monitored by automatic tubidity buoys, bubble curtains by noise detectors, sediment treatment by sample and flow analysis
Scroll down if you want to know more.
This is how it works and looks
Photo by: Dronefoto Ålesund
The bubble curtain let compressed air out into the water column through a number of small orifices. The great number of small bubbles created rises slowly to the surface. The sum of the surface area and volume of the air bubbles affects the water environment in a number of ways, and can help;
- reduce noise and pressure vawes
- transport bottom water to surface
- prevent ice
- stop silt and debree
The Waens bubble curtain construction makes it easy to transport, assemble and mount. Powerful installations can be mounted by small crafts, without the need for barges and cranes.
Human activity at shores and in waterways mix particles from land or seabed sediments. The particles may carry pollutants and will cloud the water. The silt curtain provide a physical barrier, letting water through, holding the particles back.
The right solution
We supply solutions for every challenge from the single curtain for a excavated pipe landing to complexe curtains in streaming waters, passable for ship traffic, curtains with oil stop, just ask!
Generations into the industrial era we have left an abundance of excess nutrients and toxic waste in our waters. Today this is sitting in the sediments, slowly leaking into the water bodies, causing algae bloomings and other ecological problems.
Stop the internal strain in water bodies
The leaks from the sediments make a severe internal strain on a lot of waters. Treatment of the seabed either by removing nutrients/pollutants or fixating them in the sediment is needed to improve ecological status within a reasonable timeframe. Waens know the solutions.
From our blog
Test installations of bubble curtains showed massive noise reduction from underwater blasting with charges up to 1800 kg TNT. The Norwegian Coastal Administration; Kystverket, had decided to do scientific testing of the effects of bubble curtains on underwater noise. They did the testing in connection with real life underwater blasting works in the harbour of…
Previous Next Silt curtains in Oslo The eastern Oslo City Centre at Bjørvika in The Oslo Fjord is undergoing extensive urban development. Along the Akerselva river towards the fjord, new commercial buildings and cultural buildings are being built, among them the new Munch Museum, which is being built opposite the opera house. The construction activity…
At a lake restoration in Sweden, thin layer sediment removal successfully removed a 5 cm phosphorus enriched top layer of sediment in lake Rålången. The sediment was leaking nutrients causing algal bloom, euthrophication and anoxia in the lake and waterways downstream. Now the sediment is removed and will be pelleted fertilizer.
Our water life
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