A model library for simulation and benchmarking of integrated urban wastewater systems |
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| Affiliation: | 1. Technical University of Denmark, Department of Chemical and Biochemical Engineering, Soltofts Plads, Building 228A, 2800 Kgs. Lyngby, Denmark;2. Novozymes A/S, Hallas Alle 1, 4400 Kalundborg, Denmark;1. College of Civil Engineering and Architecture, Zhejiang University, China;3. School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, China;4. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong;5. Chief Executive Officer, KWR Water Research Institute, Netherlands;6. Distinguished Professor, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Malaysia;7. Department of Water Management, Delft University of Technology, the Netherland;8. Centre for Water Systems, University of Exeter, North Park Road, Exeter, EX4 4QF, United Kingdom |
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| Abstract: | This paper presents a freely distributed, open-source toolbox to predict the behaviour of urban wastewater systems (UWS). The proposed library is used to develop a system-wide Benchmark Simulation Model (BSM-UWS) for evaluating (local/global) control strategies in urban wastewater systems (UWS). The set of models describe the dynamics of flow rates and major pollutants (COD, TSS, N and P) within the catchment (CT), sewer network (SN), wastewater treatment plant (WWTP) and river water system (RW) for a hypothetical, though realistic, UWS. Evaluation criteria are developed to allow for direct assessment of the river water quality instead of the traditional emission based metrics (for sewer overflows and WWTP discharge). Three case studies are included to illustrate the applicability of the proposed toolbox and also demonstrate the potential benefits of implementing integrated control in the BSM-UWS platform. Simulation results show that the integrated control strategy developed to maximize the utilization of the WWTP's capacity represents a balanced choice in comparison to other options. It also improves the river water quality criteria for unionized ammonia and dissolved oxygen by 62% and 6%, respectively. |
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| Keywords: | Benchmark simulation models Urban wastewater system modelling Integrated control strategies |
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