Weeefiner achieves scale-up breakthrough in industrial wastewater metal recovery
Backed by EIT RawMaterials, Finnish cleantech startup Weeefiner has achieved a major scale-up breakthrough by increasing the treatment capacity of its 4D Scavenger® technology tenfold. It is now generating customer revenue and building a growing pipeline of projects across metals recovery and industrial water treatment.
Our recent progress shows that selective metal recovery from industrial wastewater is no longer just a laboratory concept. We want to help industry move from simply treating wastewater to recovering value from it, making metal recovery practical, scalable and economically attractive.
Mikko Hänninen, CEO of Weeefiner
Scaling up with EIT RawMaterials
In 2024, the startup won the Eramet Water Resource Innovation Challenge, organised by the global mining and metallurgical group Eramet in partnership with EIT RawMaterials. The win led to a pilot at Eramet's smelting facility in Norway, providing valuable validation in a demanding real-world environment.
Building on this engagement, EIT RawMaterials has continued to support Weeefiner’s development and scale-up efforts. The startup has received €800,000 in funding to accelerate the refinement and scale-up of its technology, and EIT RawMaterials is also supporting the startup in securing future funding.
EIT RawMaterials has played a key role in helping Weeefiner turn our academic innovation into an industry-ready solution. Their support has enabled us to identify the key challenges in industrial water treatment, understand where critical raw materials are lost, and focus our development on the applications where our technology can deliver the greatest impact.
Mikko Hänninen, CEO of Weeefiner
Weeefiner equipment at customer site
Gaining commercial momentum
Weeefiner's technological progress is now translating into commercial traction.
The startup has generated €3 million in cumulative revenue, with €1.7 million in orders already booked for 2026. It has also recorded two consecutive years of positive EBITDA, indicating that operating revenues now exceed day-to-day costs.
Its sales pipeline has expanded to over 20 active opportunities across multiple industrial applications, including copper recovery, lithium recovery, and industrial water treatment. This momentum builds on industrial references and collaborations with companies such as Rio Tinto, Neste, Eramet, and NG Nordic.
Weeefiner has taken a genuinely novel material science approach and built it into a full solution deployable on an industrial scale. The journey from lab to industrial pilot to commercial traction has been remarkable, and we are proud to have played a role in this endeavour.
Nicolas Menou, Business Development Manager, EIT RawMaterials
With this foundation in place, Weeefiner is currently raising €5 million to support its transition from validated technology to repeatable commercial deployment, funding modular production scale-up, commercial expansion, and continued R&D to improve efficiency, output, and cost performance.
In addition to the traditional capital investment model, the startup offers Recovery-as-a-Service (RaaS) as a flexible option for customers seeking to avoid upfront capital expenditure. Under this model, more of the operational burden is shifted from the customer to Weeefiner, while deployment and operation are handled on-site, with pricing linked to recovery outcomes.
Weeefiner’s systems are delivered as container or skid installations, enabling flexible and scalable deployment across a wide range of industrial environments. Looking ahead, the startup has set an ambitious revenue target of €30 million by 2030, with a significant recurring revenue share.
Explore our Startup portfolio 2026 here.
For questions and feedback, please contact the EIT RawMaterials Access to Finance team at a2f@eitrawmaterials.eu.
Weeefiner’s commercial proof is catching up with its technology promise and their scalable business model is attractive for investors. They have built a solution that solves real industrial challenges, protected it with serious IP, and are now delivering it at scale.
Phuong Dai Nestler, Investor Partnership Manager, EIT RawMaterials
