Water Reuse and Recovery Facility Connected Digital Twin Case Study: Singapore PUB’s Changi WRP Process, Control, and Hydraulics Digital Twin

Jacobs is collaborating with Singapore Public Utilities Board (PUB) to create a digital twin (DT) of Changi Water Reclamation Plant (CWRP). CWRP is currently averaging 920,000 m3/d (243 MGD) of influent flow. In the context of water resource recovery facilities, a digital twin is includes a process model of the facility that automatically takes live data from the facility. The DT being developed for PUB also includes a first-of-its-kind simulation of control systems and liquid hydraulics integrated with process under one platform. The digital twin uses approximately 1200 data tags and includes three primary functionalities. First, comparison between model predictions and measured data highlights area’s for attention by operations and maintenance staff, thus minimizing their efforts. The second use of the calibrated model includes evaluation of various operational scenarios, both operator defined, and fixed. This allows operation staff to better understand the possible impacts of either unexpected or planned outages on the facility. Lastly, the auto-calibrated model will be used to predict the likelihood of future events at the wastewater facility up to 5 days in the future, a “wastewater weather forecast”.