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Simulation study demonstrates improved effluent quality and reduced operating costs in an activated sludge plant, suggesting advanced controllers optimize wastewater treatment performance.
Advanced control strategies are designed for an activated sludge‐based wastewater treatment plant (WWTP) consisting of two anoxic, three aerobic reactors and secondary settler by considering the influent data from an existing WWTP. Four different control strategies (PI/FPI/MPC/FLC) are designed and a systematic procedure is developed to implement these control strategies. The plant performance is evaluated using operational cost index (OCI) and effluent quality index (EQI) and the controller performance is assessed based on integral of squared error. The EQI and OCI for open loop are reported as 4469 and 12 743 respectively. Whereas, when advanced controllers are implemented, a significant decrease of 19.89% and 5.24% in EQI and OCI is observed for MPC and a decrease of 20.9% and 4.63% in EQI and OCI is observed for fuzzy controller. The outcomes of this research help the wastewater utilities to adopt advanced control strategies for enhanced operation and decision‐making.
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Tejaswini et al. (2020) studied this question.
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