“Water loops regenerative business models” by HYDROUSA consortium, image/information source: HYDROUSA
HYDROUSA, an EU Horizon 2020 flagship (2016-2021, €8M budget), pioneers circular water management in the Mediterranean’s arid zones, blending biomimicry, low-tech nature-based solutions (NBS), and IoT sensors. Led by Greece’s National Technical University of Athens with 28 partners across Croatia, Italy, Lebanon, and Palestine, it processes sewage, rainwater, groundwater, and seawater into hygienic freshwater for agriculture, industry, and recharge—closing loops to combat scarcity affecting 180M people.
Demonstration sites in Attica (Greece), Sicily (Italy), and beyond employ modular “HydroModules”: vertical flow wetlands mimicking root zones, anaerobic baffled reactors emulating gut digestion, and floating treatment islands inspired by beaver dams. Sensors track TSS, BOD, pathogens (e.g., E.coli <10 CFU/100mL output), and nutrients, with AI optimizing flows via apps. Outputs exceed WHO standards, yielding 1,000 m³/day per site while generating biogas for energy (up to 20% recovery).
Biomimicry shines in low-energy designs: subsurface infiltration beds copy aquifers, boosting recharge by 30%; vertical gardens emulate terraced rice paddies for evapotranspiration. Socially, it trains 500+ locals, fostering jobs in “Water As a Service” models. Economic viability: €0.5-1/m³ treatment costs versus €2+ for desalination.
Impacts include 90% water reuse in pilots, slashing imports, and biodiversity gains (e.g., pollinator habitats). Scalable for urban Romania—think Bucharest retrofits amid Danube stresses—HYDROUSA’s open-source blueprints support PUZ integrations.
Legacy endures via HYDROUSA 2.0, influencing UN SDGs and Blue Economy. It proves architecture’s role in resilience: buildings as water factories.
