Wetsus Discover Day, the annual members-only congress on Thursday, 27 November 2025, offers a chance to reconnect with the Wetsus network, explore innovative projects by company members and PhD researchers, discover our European collaborations, and meet PhD researchers advancing water technology. Our keynote speaker, Willem Ferwerda, founder of Commonland, will encourage reflections on how your organization can integrate restoration to preserve shared resources. Following his keynote, Wetsus PhD researchers and industry partners will co-present on a range of cutting-edge research themes. Please register below before 21 November to confirm your participation. Wetsus Discover Day is open for employees from all our (regular and platform) participants from companies and universities.
Program:
10:30 – 11:00 Welcome, coffee
11:00 – 12:00 Laboratory tour
With highlights of natural flocculants, microalgae, and natural water production.
12:00 – 13:00 Lunch & Discovery showcases
Showcases include European-funded projects in which Wetsus is involved: research training (EMPOWER MSCA CO-FUND), carbon neutrality (ConsenCUS), water quality and monitoring (H2OforAll and UrbanM2O), and groundwater and soils (NINFA and SOILCRATES).
13:00 – 13:30 Welcome & Wetsus Update by program director Jan Post
13:30 – 13:40 New Wetsus participants introduction pitches
13:40 – 14:30 Keynote Lecture by Willem Ferwerda, founder of Commonland
From degradation to restoration: experiences with a systems approach
Willem works globally on landscape-scale restoration that integrates biodiversity, climate, agriculture, business, and communities. He developed the 4 Returns framework, linking ecological recovery with social and economic benefits. Trained in biology, tropical ecology, and agriculture in Amsterdam and Colombia. As Executive Director of IUCN Netherlands in 2000 – 2012, he supported over 1,500 projects in 40 countries and built partnerships between business and conservation. Today, he advises international initiatives, promoting a “holistic restoration industry” that unites heart, mind, and hands to heal landscapes.
14:30 – 14:35 Music performance
14:35 – 15:00 Break
15:00 – 16:00 Parallel sessions 1
1.1 Smart separation: Engineering interfaces for selectivity and sustainability — introduced by Antoine Kemperman, Scientific Advisor
• High-recovery and Chemical-free desalination via Electrodialysis Metathesis by Kecen Li (Wetsus, WUR)
• Coalescence stability of emulsion droplets stabilized using potato proteins by Arunitha Sreeprakash (Wetsus, UT)
• Crosslinked polyelectrolyte multilayer coatings: selective nanofiltration under harsh conditions by Xiao Zhang (Wetsus, UT)
• Teijin’s membrane technology for filtration applications from drinking water to the industrial usages by Akihisa Nomura (Teijin, Sustainable Carbon Cycle theme)
1.2 Beneath the surface: Regenerative practices for soil and groundwater health — introduced by Chris Schott, Scientific Project Manager
• Pesticides past, present, and future: insights from science and practice for healthier soils by Marija Gadzimuradova (Wetsus, WUR) and Sytze Keuning (Bioclear Earth, Soil theme)
• Making manure an opportunity: from excess residue to soil value by Lourens van Langeveld (Wetsus, WUR) and Joost Mulder (Mulder Agro, Soil theme)
16:00 – 16:15 Break
16:15 – 17:15 Parallel sessions 2
2.1 Waste to worth: Insights of resource recovery from the IWA Resource Recovery — introduced by Thomas Prot, Scientific Project Manager
• Fantastic vivianite and where to form it: Potentials in iron mediated phosphate recover by Sophie Banke (Wetsus, TU Delft)
• An invisible resource: Heat recovery from greywater by Shuoguang Yang (Wetsus, RuG)
• Improving the selectivity and efficiency of biological gas desulfurization under halo-alkaline conditions by Joris Bergman (Wetsus, WUR)
• Resource recovery choices: Viability, value, and the carbon footprint by Jouke Boorsma (AquaMinerals, Phosphate Recovery theme)
2.2 Safe delivery: Innovations in water distribution and biofilm control introduction — introduced by Inez Dinkla, Monitoring & Quality Theme Coordinator
• Strategies for biofilm control in drinking water distribution by Pamela Mousa & Rodrigo Nobre (Wetsus, RuG, UT) and Anneke Roosma (Vitens, Biofilms theme)
• A collaborative effort towards better leak detection in plastic pipes by Ruixuan Qi (Wetsus, RuG) and Erik Driessen (Acquaint, Smart Water Grids theme).
17:15 – 18:00 Borrel & Discovery showcases
18:00 – 19:30 Buffet dinner
Online registration is now closed. You can still attend, but please register on-site.