Bioprocess and Biosystems Engineering

, Volume 33, Issue 9, pp 1051–1058 | Cite as

Artificial neural network modelling of a large-scale wastewater treatment plant operation

Original Paper


Artificial Neural Networks (ANNs), a method of artificial intelligence method, provide effective predictive models for complex processes. Three independent ANN models trained with back-propagation algorithm were developed to predict effluent chemical oxygen demand (COD), suspended solids (SS) and aeration tank mixed liquor suspended solids (MLSS) concentrations of the Ankara central wastewater treatment plant. The appropriate architecture of ANN models was determined through several steps of training and testing of the models. ANN models yielded satisfactory predictions. Results of the root mean square error, mean absolute error and mean absolute percentage error were 3.23, 2.41 mg/L and 5.03% for COD; 1.59, 1.21 mg/L and 17.10% for SS; 52.51, 44.91 mg/L and 3.77% for MLSS, respectively, indicating that the developed model could be efficiently used. The results overall also confirm that ANN modelling approach may have a great implementation potential for simulation, precise performance prediction and process control of wastewater treatment plants.


Activated sludge process Modelling Artificial neural network Wastewater treatment plant 


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of Environmental Engineering, Engineering and Architectural FacultySelcuk UniversityKonyaTurkey

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