Eutrophication is due to nutrient leakage of nitrogen and phosphorus, which causes algae blooming, oxygen-free bottoms and growth. The aquatic plants, for example reeds which we harvest to reduce eutrophication, consist of organic material and are suitable for use as a substrate in a biogas plant. Then we will have all the positive benefits of the renewable fuels biogas and bio-fertiliser.
By using harvested aquatic plants as substrates in biogas facilities, we achieve 9 of the 16 environmental goals. Limited climate impact, fresh air, only natural acidification, no eutrophication, living lakes and streams, balanced seas and living coastlines, bustling wetlands, good built environment and rich flora and fauna.
Harvesting of aquatic plants purifies three times as efficiently as today's wetlands at one third of the price. By harvesting reeds and other plants, we also contribute to biodiversity in a positive manner. Since 2008, we have tried in rivers, lakes, wetlands and most recently in the Saint Anna archipelago with a good result.
Harvesting of 5,000 hectares of reeds results in:
100 tonnes of phosphorus recovered
1 000 tonnes of nitrogen recovered
CO2 emissions reduced by 45,000 tonnes
3,300 tonnes of fertiliser replaced by bio-fertiliser
140 GWh of renewable biogas produced, about 7,000 villas
Would you like to learn more? Feel free to contact our experts!
Business area manager Circular Innovation
0732-01 01 25
