Connecting digital twins to control collections systems and water resource recovery facilities: From siloed to integrated urban (waste)water management

Abstract

The use of digital twins is a rapidly emerging field for improved real-time control (RTC) and decision support for the operation of collection systems and water resource recovery facilities (WRRFs). Digital twins for collection systems can help minimize the impacts of flow variation due to extreme weather events, attenuate flows to the WRRF, and reduce sewer overflows and the associated effects. Similarly, digital twins for WRRFs can help improve process, energy, and cost efficiency, fully utilise plant volumes, reduce carbon footprint, and support operator training. The current study provides an overview of two digital twin applications for collection systems (Future City Flow) and WRRFs (TwinPlant) and presents a first example of digital twin integration for proactive collection system-WRRF operation under wet-weather conditions. Current applications of the integrated digital twin are described, including (i) proactive implementation of wet-weather operation mode in WRRF based on inflow forecast and (ii) evaluation of the impacts of RTC in collection systems on WRRF performance. Other potential application examples are described together with the challenges related to the use of this solution. Overall, this new approach has a wide potential to support the cooperation within water utilities towards the adoption of integrated wastewater management. HIGHLIGHTS Digital twins can provide a sound base for controlling catchments and water resource recovery facilities.; High-quality online data from the twinned facilities is a key for reliable digital twins.; Digital twins must be robust to gain operator trust.; Connected digital twins provide a basis for system-wide optimization.; Helps to move from siloed to integrated management.;

Keywords

• collection systems
• digital twins
• integrated management
• optimization
• real-time control
• wastewater treatment plants