The winners will receive pre-commercialization support in the BONUS RETURN project. The competition gathered innovations from several European countries representing unique and sustainable solutions for reusing nutrients and/or carbon in the Baltic Sea Region.

The technologies below have been selected based on their ability to demonstrate a strong and innovative potential to prevent, extract and reuse phosphorous which would increase resilience and food security, as well as keeping the Baltic Sea healthy.

Aquacare’s BiOPhree® technology  is a method that enables the minimization or elimination of micro bio growth to avoid biofilm. The technology can recover phosphorous and convert it to a concentrated phosphorous containing liquid with the ability to be re-used as a fertilizer for agriculture. BiOPhree material is simple to engineer and after regeneration, reusable.

TerraNova Energy GmbH  is a German-based company working with Innovative Sludge Treatment technology. The TerraNova® Ultra turns sewage sludge, a contaminated side product from waste water treatment, into climate friendly coal for energy production and clean Phosphorous fertilizer. The final product is sterilized with low water content and can be used as CO2-neutral fuel for energy production or for agricultural application.

Finnish-based RAVITA provides an innovative process for nutrient recovery directly from the main wastewater stream. Phosphorus is post-precipitated in the very end of the water stream, and the chemical sludge formed precedes the main part of the RAVITA process. Chemical sludge is further processed by the dissolution and recovery steps. The formed end-product is phosphoric acid, which has high value both in fertilizer industry as well as other industrial segments.

All three innovations exceptionally fulfilled the requirements to win in the competition which included: addressing nutrient or carbon reuse from agricultural or waste water sectors or both; provide a technology applicable in the Baltic Sea environment; a technology that is a biological, physical, or chemical intervention designed to minimize harm to the environment and provide services of value to society; and a prototype Technology Readiness Level (TRL) 5 or higher. They all had a TRL level between 5 -7.

BONUS RETURN will now provide business plans, perform additional tests, introduce their product to potential markets and clients, and help them to further develop a marketable product customized for Baltic municipalities.

The relevance of each application to the BONUS RETURN project is fundamental, as a major aim of the competition was to establish mutual benefit between the project and winning innovations.

Press photos of the winners

Joris Salden
Joris Salden from Aquacare, The Netherlands
Marc Buttman from TerraNova Energy, Germany
Mari Heinonen
Mari Heinonen from RAVITA, Finland

Watch a video interview with Joris Salden from Aquacare. Video: SEI / YouTube .

For interviews or further information, please contact:

Karina Barquet, Project Manager, BONUS RETURN
[email protected] +46 70 388 5690

Brenda Ochola, Communication Officer, BONUS RETURN
[email protected] +46 73 707 8613

Ylva Rylander, Press Officer, Stockholm Environment Institute
[email protected] +46 73 150 3384


BONUS RETURN consists of a consortium of partners in Sweden, Denmark, Finland and Poland:

BONUS RETURN aims to collaboratively support small and medium enterprises (SMEs) that produce eco-technologies, by assessing their effectiveness in reducing nutrients and carbon, and deploying them using test-beds and commercialization at the project’s three case study sites in Sweden, Finland and Poland. It is a three-year project aimed at reducing emissions in the Baltic Sea by turning nutrients and carbon in the Baltic Sea into benefits. The project has received funding from BONUS (Art 185), funded jointly by the EU and runs from May 2017 to May 2020.
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BONUS is a joint research and development programme producing knowledge to support development and implementation of regulations, policies and management practices specifically tailored for the Baltic Sea region. It issues calls for competitive proposals and funds projects of high excellence and relevance based on its strategic research agenda.
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