THE PROJECT PROPOSAL STEMS FROM THE DUAL NEED FOR WASTEWATER PURIFICATION OPERATORS TO MAKE MORE AND MORE? EFFICIENT IN-LINE WATER PURIFICATION PROCESSES, BASED ON INNOVATIVE MACHINERY ABLE TO IMPLEMENT THE LOGIC OF THE CIRCULAR ECONOMY, TO PROVIDE REAL-TIME DATA AND MEASURES IN ORDER TO SUPPORT FACT-BASED DECISION-MAKING ACTIONS, AND TO TREAT AND ENHANCE THE SEWAGE SLUDGE PRODUCED IN THIS SENSE, THE IDRO.SMART PROJECT AIMS TO ELEVATE SEWAGE SLUDGE FROM THE CURRENT STATUS OF WASTE TO THAT OF RESOURCES, ACCORDING TO THE LOGIC?END OF WASTE?REALISING A CIRCULAR ECONOMY CIRCUIT THAT IS AT THE SAME TIME ABLE TO SOLVE THE ECONOMIC-ENVIRONMENTAL PROBLEM OF THE DISPOSAL OF SEWAGE SLUDGE AND TO RECOVER STRATEGIC RESOURCES, EQUIVALENT RAW MATERIALS TO FORMULATE GREEN PRODUCTS TO MARKET. IN ADDITION, WITH A VIEW TO ENERGY/ECONOMIC/ENVIRONMENTAL EFFICIENCY OF THE APPLIED PROCESSES, WILL THE PROJECT DEMONSTRATE? A SCALE