SUSTAINABLE TREATMENT OF DOMESTIC GREYWATER BY GREEN WALLS FOR REUSE Fulvio Boano, Alice Caruso, Elisa Costamagna, Silvia Fiore, Francesca Demichelis, Luca Ridolfi, Ana Galvão, Joana Pisoeiro, Anacleto Rizzo, Fabio Masi (2019) SUSTAINABLE TREATMENT OF DOMESTIC GREYWATER BY GREEN WALLS FOR REUSE