Costel Bumbac is a senior research scientist leading the biotechnology research team within the Environmental Technology and Technology Transfer Department of ECOIND, Romania. He has 15 years of experience in research projects focused on developing and optimisation of biological wastewater/drinking water treatment technologies, biodegradability studies, soil bioremediation and waste to biofuels technologies. Within the INNOQUA project, he contributed to the development of bio-solar purification system and full-scale demonstration and served as worldwide demonstration manager.Jean-Baptiste Dussaussois was the project manager of INNOQUA. As an environment and water engineer he brought his expertise and experiences from an NGO and large company to develop nature-based wastewater treatment solutions. He has managed several international projects and is currently working with NOBATEK/INEF4, a private Research and Technology Organisation for the sustainable building sector. He has been part of several European Commission expert groups and is a member of the water parliament of the South-West of France.David Tompkins is an environmental scientist with a multi-disciplinary background encompassing horticulture, soil science, composting, anaerobic digestion, wastewater treatment, market development and policy implementation. David is a technical consultant and senior manager for Aqua Enviro, specialising in various aspects of sewage sludges, biowastes and other bioresources: hazard management, valorisation, market development, end of waste and stakeholder engagement.