Balt-Plast-Free
We bring together Finnish and Estonian partners to measure, compare and reduce microplastic emissions from wastewater treatment plants.
From Measurement to Action
The project begins by establishing a shared understanding of the problem. Finnish and Estonian research partners jointly develop and validate methods for sampling and analysing microplastics in wastewater and sludge.
Representative treatment plants in both countries are monitored to determine current emission levels. Based on these results, concrete reduction strategies are designed and tested in practice.
Tools for Utilities & Decision-Makers
The project provides:
- A guidebook for validated microplastics sampling
- Cross-border training programmes for wastewater operators
- Study visits to pilot sites
- A mobile laboratory for sampling, demonstrations and awareness raising
Authorities receive reliable data and recommendations to support future policy decisions. Technology providers and SMEs gain practical insights into removal performance. Researchers benefit from shared protocols and open results.
Long Term Impact
By improving microplastic monitoring and testing targeted removal technologies in two wastewater treatment plants, Balt-Plast-Free supports concrete reductions in urban microplastic emissions.
The broader goal is to help wastewater treatment plants across the Baltic Sea region prepare for upcoming EU requirements and contribute to a healthier marine environment through practical, transferable solutions.
Two pilot solutions are implemented
Mikkeli, Finland:
Filtration of incoming wastewater to prevent microplastics
from entering biological treatment and sludge.
Elva, Estonia:
Ultrafiltration of sludge reject water to reduce internal recirculation
and final discharge into the environment.
The pilots are monitored and optimised, and their technical and economic feasibility is assessed to support wider replication.
Project partners:
Find Balt-Plast-Free on social media