From June 15–21, 2025, the Center for Sustainable Infrastructure (CSI) led a US delegation on an immersive study tour across Denmark, exploring the nation’s innovative approach to industrial wastewater management and resource efficiency. Hosted in partnership with State of Green, the program brought together US and Danish experts, utilities, and technology providers to exchange best practices and foster international collaboration.
Participants traveled through Copenhagen, Frederikssund, Hillerød, Jyderup, Kalundborg, Aarhus, and Middelfart, visiting leading eco-industrial parks, water utilities, and pioneering facilities. Highlights included:
- Site tours of advanced wastewater treatment plants (WWTPs) such as Lynetten, Solrødgård, Søndersø, and Ejby Mølle, showcasing energy-positive operations, circular water technologies, and carbon capture initiatives.
- Engagements with Danish water sector leaders—including DANVA, DHI, BIOFOS, Grundfos, DI Danish Water Industries, Kalundborg Symbiosis, Aarhus Vand Utility, and Water Valley Denmark—through presentations, roundtables, and workshops focused on benchmarking, climate adaptation, and open innovation.
- Visits to industrial symbiosis hubs like Kalundborg, where companies collaborate to share water, energy, and materials, optimizing resource use and minimizing environmental impact.
- Exploration of new urban developments such as the Nye neighborhood in Aarhus, designed for rainwater reuse and climate resilience.
- Cultural experiences in Copenhagen, Aarhus, and other cities, offering insights into Denmark’s green transition and sustainable urban living.
The delegation gained firsthand knowledge of Denmark’s integrated, resource-efficient strategies for industrial wastewater management—learning how effective collaboration, technology adoption, and circular economy principles can drive sustainability and competitiveness in the water sector. The event inspired participants to pursue innovative solutions and partnerships for a more resilient, climate-neutral future.
Download the program for the Center for Sustainable Infrastructure
