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Welcome to WEBAP

Wave Energized Baltic Aeration PumpOXYGEN PUMPS

Powered by nature – Imitating nature – Restoring nature

How we can use nature to restore marine environments before it is too late.

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Eutrophication has many effects algae blooming phosphorous-depending cyanobacteria dead bottoms and hydrogen sulphide

Ecological and biological problems, large future economic problems for tourist- and fishery industry in the Baltic region.

(1) Nitrogen is emitted to waters

(2) Spring blooming of plankton

(3) Algae die

(4) Algae are de-composed which consumes oxygen

(5) Bottoms get anoxic

(6) Phosphorous is released

(7) Summer blooming of cyanobacteria

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Extent of oxygen-depleted bottom waterIn the Baltic Sea Worldwide

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Need for action? Doesn’t the Baltic take care of itself? How affects and is the Baltic affected by climate change? Can technical solutions help in a long term?

Why do we think we need actions also in the Baltic and not only at sources? There sure is a good monitoring of sources and these sources can be abated? The Baltic in imbalance? Weakening of natural processes? Restore the Baltic Sea self-

cleaning biogeochemical processes?

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WEBAP: AimImproved oxygen situation in deep water layers Species that are dependent on conditions in deep water, would get a better

environment and opportunities for reproduction. Solved inorganic phosphorus released due to the reducing conditions in the bottom

sediments will be bound in complexes and thus reduce the inorganic nutrient concentrations in the water.

Yet: 2-6 million tons of oxygen needed each year! Enormous amounts of energy to pump oxygen down to 80-120m depth!

Mission impossible?!

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WEBAP: How?The use of natural resources: Source of energy: waves Source of oxygen: oxygen-rich surface water

Advantages: Oxygenation & mixing Simple and robust design with no moving parts No need for electricity

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WEBAP: Planning and design

18 tests with different wave conditions mooring forces Pump capacity for each wave spectra Stability Optimal ramp (30˚is optimal) other details

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WEBAP: Pilot IFacts 14 m with, variable ramp faces waves at all conditions outlet at 75m depthMeasurements Pump-capacity, wave parameter, currents,

CTD-profiles, sediment, forces, stability, behaviour, etc.Operation period November 2010 to April 2013 (with interrupted operation

between December 2010 to July 2011)

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WEBAP: Pilot IIFacts 2,5 m in diameter, variable pump-capacity between 1-4m3/s maximal effect use 5 kW outlet at 100m depth

Measurements Pump capacity, CTD-profiles, sediments,

metals, nutrients, currents etc.

Operation period April 2011 to September 2012

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WEBAP: Monitoring Online monitoring Field expeditions Water and sediment samples Historical data

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WEBAP: Evaluation Data evaluation Modeling regional large scale

impacts Laboratory tests

Ecotoxicology O2 start

O2 end

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Macoma

Marenzelleria

Mysis

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Results Measurements and mapping of the lack of oxygen in the

area indicate that the lack of oxygen in the pilot areas is more widely spread than previously estimated

Measurements confirm the estimated pumping capacity at different wave heights

Large scale implementation modeling establishing that the technique does not affect the salinity stratification

Modeling for the Gotland Deep based on field data show oxygenation of the whole area down to the seafloor after only five years

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More results Tests with sediment and organisms from the pilot

sites show no adverse effects of oxygenation Potential to bind up to 100 000 tones of phosphorus,

which can be compared with the annual land supply of around 30 000 tones /yr and the environmental objective to reduce this load by 15 000 tones /yr

Several setups for different conditions (waves, etc.) Modeling of pumping in Kanholmsfjärden based on

field data shows effect of oxygenation not only in Kanholmsfjärden but also in adjacent bays due to the high water exchange

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Even more results Lifecycle Assessment (LCA) and Lifecycle Cost (LCC)

analyses indicates that the WEBAP is the most sustainable and cost-efficient alternative

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Developed WEBAP-systems1) Wave powered for large-scale application at sea, maybe in combination with other offshore installations.

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Developed WEBAP-systems2) Biofuel-powered for coastal applications in the absence of wind or waves.

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Developed WEBAP-systems3) Wave powered for bothinshore and offshore applications.

Future: solution combination? Aquaculture? Research station? Tourism/Recreation Energy platform? Entrance to the Baltic?

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Dissemination an awareness increaseNewspaper, conferences, TV, notice boards, homepage, Facebook, reports, exhibition, flyer, seminars, radio, etc.

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Photo documentationPress a thumbnail in order to see a larger version of an image!

Relaunch WEBAP I.swf

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Project partner & collaboration partnerProject group IVL Swedish Environmental Research Institute KTH – Royal Institute of Technology Municipality of SimrishamnCollaboration partner (selection)

Åbo Akademi University, KIMO - Local Authorities International Environmental Organization, Institute of Oceanology of the Polish Academy of Sciences, Erken Laboratory, Österlen Trade Society, Marint centrum, Österlens Fishing Association, Xylem Inc, Reinertsen, BWN consulting, Marincenter Syd, Konceptfabriken, MJK, Högmansö varv, Ressel, etc

Collaboration with other projectsBOX, PROPPEN, SEABED, Innovative Aquaculture Åland Islands

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More information

Homepage: www.webap.ivl.se

Contact:Christian Bareselchristian.baresel@ivl.seTel:+46-8-598 56 406

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