Inspirational Pilots

 SCALE   refers to the physical or territorial level at which the solution is implemented

  • B – Building: a single building or facility.
  • D – District/Neighbourhood: a district or neighbourhood.
  • U – Urban: city or municipal scale.
  • R – Regional: regional scale, including rural areas.

 TRL   stands for Technology Readiness Level. It indicates the maturity of a technology and is measured on a scale from 1 to 9

  • TRL 1–3: early research and proof of concept.
  • TRL 4–5: technology validated in the laboratory or in a relevant environment.
  • TRL 6: prototype demonstrated in a relevant environment.
  • TRL 7: prototype demonstrated under real operational conditions.
  • TRL 8: complete and qualified system.
  • TRL 9: technology fully proven and operational in real conditions.

IPL#1 – Water-Mining (La Llagosta, Barcelona, Spain)

Fit-per-purpose treatment train for a circular economy and society

 SCALE: U  
 TRL: 6  

IPL#2 – Anaerobic treatment followed by NBS to treat greywater for campsite irrigation (Tamarit Beach Resort, Costa Dorada, Spain)

Decentralized non-potable wastewater reuse system for cleaning and irrigation purposes at a coastal campsite

 SCALE: B 
 TRL: 6  

IPL#3 – MEL: Source-separated urine nutrient recovery systems for circular urban sanitation

Compact, modular treatment units derived from MELiSSA closed-loop life-support technologies

 SCALE: D 
 TRL: 7-8 

IPL#4 – Nature-Based Solutions for Sludge Dewatering (Girona, Spain)

Nature-Based Solution for Sludge dewatering for small WWTP

 SCALE: R 
 TRL: 8 

IPL#5 – Sewer Mining energy efficient water reuse system (in Markopoulo, East Attica, Greece)

Decentralised non-potable water reuse system for local demand coverage

 SCALE: D  
 TRL: 8 

IPL#6 – Nature-based wastewater treatment train & Agroforestry system (in Antissa Village, Lesvos Island, Greece)

Integrated UASB-CW WWT NBS for unrestricted agricultural irrigation & fertigation

 SCALE: R 
 TRL: 7 

IPL#7 – Nature-inspired remote rainwater harvesting system (in Ano Mera Village, Mykonos Island, Greece)

Sub-surface rainwater collector for aromatic plants irrigation

 SCALE: R 
 TRL: 7 

IPL#8 – Smart domestic rainwater harvesting & flooding control system (in Ano Mera Village, Mykonos Island, Greece)

Decentralized residential-scale RWH & bioswale system for multiple uses

 SCALE: B 
 TRL: 7 

IPL#9 – Innovative nature-inspired solar desalination system (in Ag. Fokas Village, Tinos Island, Greece)

Passive solar still system for irrigation water & edible salt recovery

 SCALE: R 
 TRL: 6 

IPL#10 – Circular Water loops in remote eco-tourist facility (in Potamia Village, Tinos Island, Greece)

Small touristic unit with integrated CW WWT NBS, RWH & off-grid energy system

 SCALE: R 
 TRL: 7 

IPL#11 – Multilayer aerated constructed wetland for treatment and reuse of campsite wastewater (Brandenburg, Germany)

Decentralized non-potable wastewater reuse system for irrigation purposes at campsite

 SCALE: R 
 TRL: 9 

IPL#12 – Greywater recycling and heat recovery at building level (Berlin, Germany)

Decentralized treatment and reuse of light greywater for toilet flushing and heat recovery for water heating

 SCALE: B 
 TRL: 9 

IPL#13 – Vacuum toilets, blackwater digestion and greywater reuse for household wastewater (Hamburg, Germany)

Anaerobic treatment of blackwater for biogas and nutrient reuse, separate greywater treatment with optional reuse

 SCALE: D 
 TRL: 9 

IPL#14 – Rainwater collection and harvesting for toilet flushing and irrigation (Berlin, Germany)

Collection of rain water from roofs into underground storage tanks and reuse for toilet flushing in larger public buildings

 SCALE: B 
 TRL: 9 

IPL#15 – Urine separation toilets for separate collection and reuse of nutrients (Berlin, Germany)

Separate collection of urine in households, storage and reuse as fertilizer

 SCALE: B 
 TRL: 8 

IPL#16 – Neighbourhood-scale decentralised circular water system (Superlocal, Kerkrade, the Netherlands)

Urban water system integrated in circular housing redevelopment

 SCALE: B 
 TRL: 7 

IPL#17 – Circular water concept (City West, Nieuwegein, the Netherlands)

Urban water system integrated in circular housing redevelopment

 SCALE: D 
 TRL: 7 

IPL#18 – LIFE ZEUS project – Towards zero liquid discharge water REUSE in agro-industry (Bourges, FR)

Advanced industrial water recycling and separation of flows for recovery

 SCALE: D 
 TRL: 8 

IPL#19 – Integrated Stormwater Management and Renaturation (Limoges, France)

Integrated stormwater management and renaturation of the site of OiEau

 SCALE: D 
 TRL: 8 

IPL#20 – MED: Closed-loop water recycling systems derived from extreme and isolated environment applications

Advanced treatment chains achieving near-complete water reuse with high resilience

 SCALE: D 
 TRL: 6-7 

IPL#21 – MED: Biologically based water treatment and nutrient recovery technologies for circular resource management

Integrated biological units optimised for circular material flows

 SCALE: D 
 TRL: 6-7 

IPL#22 – MED: Closed-loop water recycling systems derived from extreme and isolated environment applications

Advanced treatment chains achieving near-complete water reuse with high resilience with a stationary configuration (Liège, Belgium)

 SCALE: D 
 TRL: 6-7 

IPL#23 – MED: Long-term operational pilots of closed-loop water systems in isolated or constrained contexts

Full-scale pilots delivering long-term performance and stability data.

 SCALE: D 
 TRL: 6-7 

IPL#24 – BIODAPH: NBS for improving WWTP effluents (in Quart (Girona), Spain)

Nature-based tertiary treatment for WWTP effluents (<10,000 p.e.).