Textile industry · July 2026
Microfibre filtration in the textile industry: technical options and regulatory context
How to tackle textile microfibre retention in industrial effluents: available technologies, critical process points and regulatory implications.
The textile microfibre problem
Synthetic microfibres — polyester, polyamide, acrylic — are one of the main sources of microplastics in the oceans. A single wash of one garment can release between 700,000 and 4,500,000 fibres depending on the fabric type and program. In the textile industry, emissions concentrate at three critical points: industrial washing, dyeing and finishing.
Critical process points
- Industrial washing and pre-washing: massive release of short microfibres from cutting and sewing.
- Dyeing and printing: effluents with a high load of organic matter, dyes and suspended microfibres.
- Mechanical finishing (raising, carding): particle generation through abrasion.
- Cooling and cleaning water: often overlooked, but with significant load.
Available filtration technologies
Unlike urban WWTPs, where volume is very high and concentration low, textile effluents have smaller volumes but very high microfibre concentrations. This opens specific options:
- Multi-barrier filtration with metal mesh: retains fibres > 50 µm. Low cost but requires frequent cleaning.
- Self-cleaning disc filters: fine retention (10-20 µm) with backwash cleaning.
- Ceramic membrane ultrafiltration: resistant to temperature and abrasion, ideal for textile effluents, but with high investment.
- Magnetic capture: especially efficient when the microfibre is already very small (< 10 µm) and membranes suffer rapid fouling.
A detailed comparison of these technologies (efficacy, cost, energy) is in the article on quaternary treatment technologies.
Combined strategies
The optimal solution for a textile plant usually combines a coarse first barrier at the wash machine (retention of large fibres) with a centralised fine treatment before discharge or water reuse. This approach reduces the volume of particles reaching the fine treatment and extends its lifespan.
Regulatory context
EU Directive 2024/3019 does not directly set emission limits for private textile industries, but it does establish the microplastic monitoring framework for the WWTPs receiving their effluents — see the compliance guide. In parallel, the EU Textile Strategy (2022) and the upcoming REACH revision will incorporate extended producer responsibility mechanisms for textile manufacturers.
Some countries (France with the AGEC law, the UK with legislative proposals) already require microfibre filters on new washing machines from 2025. Regulatory pressure on textile manufacturing will grow in parallel.
Benefits beyond compliance
- Reduced discharge fees to public sanitation (variable levy based on load).
- Possibility of internal reuse of treated water (low-demand washes, cooling).
- Better positioning with end brands increasingly demanding environmental traceability (Higg Index, ZDHC).
- Recovery of retained fibres as feedstock for recycled textile products or composite materials.