PMID: 16649563May 3, 2006Paper

Modeling, identification, and validation of models for predictive ammonia control in a wastewater treatment plant--a case study

ISA Transactions
A StareD Vrecko

Abstract

The aim of this work is to develop the ammonia models that could be used for model predictive control (MPC) of nitrification process in a wastewater treatment plant. First, a reduced nonlinear model is presented, which is based on expression for nitrification reaction rate in activated sludge model No. 1 and modified for attached biomass processes, while second, a linear black-box model is shown. The data used for model identification were collected during several weeks of experiments on a real plant so that good identification data were obtained. The designed models were validated based on open loop simulations and predictions. Validation results show that the reduced nonlinear model performs better compared to the linear model, however, both models show relatively large errors compared to the real plant data. Hence, a closed loop simulation study was performed to see the differences between the performance of model predictive controller using previously estimated linear and nonlinear models and a standard proportional integral (PI) controller. From the simulation study results it was seen that in spite of relatively large model errors the MPC algorithms give better results in terms of ammonia removal compared to the PI contro...Continue Reading

References

Aug 19, 2000·Haemophilia : the Official Journal of the World Federation of Hemophilia·R Ljung

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Citations

Sep 3, 2008·ISA Transactions·R B MurphyV Kecman
Jun 4, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·V C MachadoJ A Baeza
Jul 23, 2009·FEMS Microbiology Reviews·Per Halkjaer NielsenJeppe Lund Nielsen
Aug 11, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·S Rodriguez-PerezC Arnaiz
Mar 24, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jamal AlikhaniArash Massoudieh
Feb 9, 2011·FEMS Microbiology Ecology·Caroline KragelundPer Halkjaer Nielsen
Jul 10, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·A M NairH Ratnaweera

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