"To achieve their ambitious goals, BioMakery, an innovative and ecological sustainable wastewater treatment system was created on the principle of water-based urban circularity. The biological wastewater treatment system builds energy, food, and waste systems around a regenerative and sustainable water cycle. The BioMakery serves as a test facility for advanced circular space technology developed within the micro-ecological life support system alternative (MELiSSA) program of ESA. SEMiLLA IPStar has a mandate to roll-out this technology in terrestrial applications."
More information : http://youbenefit.spaceflight.esa.int/esas-water-recycling-system-boosts-innovation-and-local-sustainability/