Run4Life demonstrates an alternative strategy for improving nutrient recovery, based on a decentralised treatment of segregated domestic wastewater streams and organic kitchen waste. This is done at 4 large scale sites in Europe (see map on the right), each with its own combination of different waste flows and innovative treatment and recovery technologies.
Two of the sites are available and in operation (Vigo and Sneek). New innovations in processes and sensors will be implemented throughout the Run4Life project, to enhance the two sites. In Sneek, in 32 houses highly concentrated black water (BW) will be produced from newly developed ultra-low water flushing vacuum toilets. High temperature anaerobic digestion (HTAD) will be employed as a one step process for the production of liquid and solid NPK fertilisers. In Vigo, added value fertilisers like ammonium nitrate will be obtained from the wastewater of 3 office buildings, by integrating innovative Bioelectrochemical systems (BES) within the existing on-site technologies for wastewater treatment and nutrient recovery.
The other two sites, in Ghent and Helsingborg, are currently building the infrastructure to be ready within the duration of the project. In Ghent, struvite and phosphoric acid will be the main products from source separated wastewater from 430 houses. In Helsingborg, separated processing of BW and kitchen waste (KW) from 320 apartments will allow obtaining struvite and ammonium sulphate, which will be mixed in different ratios with hygienised sludge from KW digestion to produce tailor made fertilisers.
|Sneek, the Netherlands||32 houses||In operation|
|Vigo, Spain||3 office buildings||In operation|
|Ghent, Belgium||120 houses||Under construction|
|Helsingborg||320 houses||Under construction|
The figure below gives a schematic overview of the treatment and recovery technologies applied at each site within the context of Run4Life, and the fertiliser products that will be produced: