Wastewater contains valuable substances that can be used as raw materials for bio-based products. In the Interreg Northwest Europe project "WOW! - Wider business opportunities for raw materials from wastewater " investigated the recovery of cellulose, lipids and PHA bioplastics from wastewater. The presentation will be focused on the use of cellulose-based admixtures from recovered toilet paper (WOW-Biochar) for the elimination of micropollutants in constructed wetlands fed with municipal wastewater. The results show that the activated biochar produced from recovered cellulose achieves an average of 89.1% in the elimination of micropollutants when 15 relevant compounds are considered. Finally, a case study was conducted for the Blies catchment (Saarland, Germany), which is characterized by low population density and small, sensitive water bodies, demonstrating the feasibility of combining cellulose recovery with a fine screen in large WWTPs and providing biochar produced from recovered cellulose as an admixture for small WWTPs where constructed wetlands is an affordable solution to eliminate micropollutants.