Journal
COMPUTERS & CHEMICAL ENGINEERING
Volume 35, Issue 11, Pages 2469-2479Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compchemeng.2011.03.031
Keywords
MPC; Nitrification; Denitrification; Reactive secondary settler
Funding
- Sectoral Operational Program for Human Resources Development [POS-DRU/88/1.5/S/60185]
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The Activated Sludge Model No. 1 (ASM1) considers that nitrification and denitrification are single step processes and nitrite nitrogen (NO2-N), which is an intermediate for the two processes, is not accounted for. The first part of this paper presents the development of an enhanced ASM1 with two step nitrification/denitrification processes and its implementation in the Benchmark Simulation Model No. 1 wastewater treatment plant (WWTP). The secondary settler was considered to be reactive in order to achieve a better fit between the simulation model and the behavior of the real WWTP. The second part presents the investigation of Model Predictive Control approach for the advanced control of the WWTP. Two control strategies are implemented for the wastewater treatment plant and they are analyzed from the perspective of the benefits brought to the WWTP operation. The proposed control strategy shows a reduction of the operational costs and the improvement of the effluent quality index. (C) 2011 Elsevier Ltd. All rights reserved.
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