Case study 1

  • In case study 1 PHA will be produced via cyanobacteria as well as anaerobic purple bacteria growth. These organisms will develop in 3 diferent photobioreactors (PBRs) at full scale. Biomass will be harvested in a lamella settler with flocculant dosage and evaluated for PHA content. In addition some of the harvested biomass will be pretreated thermically and undergo anaerobic co-digestion, using agro-industrial wastes as co-substrate. This process will yield biogas which will be upgraded in the own photobioreactors. It will also yield a digestate effluent that will be treated and estabilised in sludge wetlands to produce bio-fertiliser. Leachate from wetlands will be conveyed to  nutrient (P/N) recovery columns, based on sol-gel coatings. 

    Clarified effluent from the settling unit will be disinfected by a solar-driven system based on ultrafiltration.  Resulting effluents will be applied for irrigation in a small agricultural surface.

    The plant will be installed in the UPC Agrópolis campus, located at the municipality of Viladecans, near Barcelona airport.

     

    Process flow diagram
    View of the inlet zone at Agropolis campus.
    Installation of one photobioreactor
    Harvesting unit (storage tanks, lamella settler and thickener)