The visit, hosted by Hidraqua, a partner in both initiatives, provided valuable insights into past challenges and achievements that can help optimise future implementations.

The GUARDIAN project, developed between 2019 and 2022 in the Turia Natural Park, was designed to enhance fire resilience through innovative water management solutions. A key component was the construction of a water reclamation station to remove micropollutants from wastewater treatment plant (WWTP) effluent. The treated water was then repurposed for preventive irrigation of green fire protection barriers, using high-powered cannons to reduce reliance on drinking water. The project also involved the development of a water transport and distribution network, climatic and agronomic monitoring, and the creation of green barriers to mitigate fire risks.

During the visit, Hidraqua presented an in-depth overview of the project, detailing both technical successes and challenges, particularly in the construction and commissioning of the water treatment unit (a system similar to the one planned for CircSyst Demo 1). This exchange of expertise will help prepare the design, commissioning and operation of the new demonstrator under the leadership of AIDIMME.

This visit reinforced the importance of leveraging past experiences to enhance efficiency and innovation in environmental resilience projects. By drawing lessons from GUARDIAN, the CircSyst team aims to optimise implementation strategies, ensuring greater impact and sustainability. Such collaborative efforts not only maximise resources but also contribute to the broader goal of advancing European innovation in circular economy and sustainability.