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
Heavy duty silt curtains
For the construction of Norways longest Railway Bridge, Waens installs heavy duty silt curtains that withstand ice, currents and wind. Environmental authorities often require silt curtains for construction work in sea, lakes and waterways. All too often, one sees that the most common prefabricated silt curtains cannot withstand currents, strong winds or ice and end…
Norways largest silt curtain
Waens is building 45000 m2 silt curtain in Frier Fjord, Norway. In Frierfjorden in Telemark, Norway, a large new industrial and port area is being developed on Frier Vest. Waens has been commissioned by the main contractor Hæhre to protect the Frierfjord against particle dispersion from the filling with 45,000 m2 of silt curtains placed…
Marine services for 170kV power supply
Waens takes on all handling on sea and contain pollution by silt curtains. This year, the Herøya industrial area received a new power supply of 170 kV via a river crossing carried out by directional drilling under Porsgrunnselva river. The cables were pulled through 5 pcs Ø225 PE pipes. It was these pipes that Steg…
Our water life
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