Conference Agenda

This study demonstrates the potential of optimization techniques for real-time water disaggregation, particularly in situations where direct measurements of individual end-uses are infeasible. We utilized European Union (EU) consumption pattern of different end-use water as baselines from the literature and minimized the discrepancy between observed and reference consumption patterns (EU) to accurately allocate total water consumption across four major end-uses: shower and bathtub, taps, washing machine, and toilet flushing. We found an average water consumption of 128 liters per person per day (l/p/d), with distinct variations on the temporal scales. The weekly variation is 128 l/p/d on weekdays and 126 l/p/d on weekends, while the seasonal variation is 140, 115, 127, and 129 l/p/d on summer, winter, fall, and spring, respectively. Disaggregation results indicate that toilet flushing constitutes the largest share of daily water-use (39 l/p/d, 30.5%), followed by shower and bathtub (32 l/p/d, 25%), taps (30 l/p/d, 23.1%), and washing machines (27 l/p/d, 21.3%). However, the proportional distribution of water consumption over 4 end-uses are subject to be changed based on daily, weekly and seasonal variations. Further work will utilize this gained understanding to estimate the produced wastewater loads with a 1 hour resolution.