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The aim of this paper is to propose a step by step method to establish and validate a relevant, dynamical model of the activated sludge process for the paper mill industry. The model is established by considering the specificities of the effluent to be treated. It uses the biochemical oxygen demand (BOD) measurement, which allows a direct correlation between the state variables of the model and the measurements. This model is validated on a pilot plant of semi-industrial size fed with industrial paper mill effluents. The parameter estimation is based on an analysis of the sensitivities. The results are compared with a model based on chemical oxygen demand (COD) partitioning which is issued from the simplification of the activated sludge model number 1 (ASM1) model. Finally, the model dealing with BOD measurements not only shows the best performances, but is also the easiest to implement, overcoming one main obstacle to efficient monitoring and control in paper mill wastewater treatment plants. [ABSTRACT FROM AUTHOR]

This paper deals with the measurement problem on activated sludge process for industrial wastewater treatment. For an efficient monitoring of the process, frequent measurement update is essential but can not be realized with standard methods which are time consuming. In order to reduce the required time to obtain a measurement and easily data for modelling or observation validation, several correlations between main measurements have been established: BOD21 vs. BOD5, BOD5 vs. CODs, VSS vs. TSS and TSS vs. CODp. All the results have been collected on a semi-industrial pilot process provided with a real paper-mill effluent. [ABSTRACT FROM AUTHOR]

The purpose of this work is to contribute, through better supervision, to improve the efficiency of a specific wastewater biological treatment plant of the Matussière and Forest Group. This paper presents the design of a dynamical model of the aeration tank, which allows to anticipate treatment difficulties. Given the great complexity of the process, an urban model established by the European action COST 624 has been adapted to the industrial treatment station. The simulation results, compared with measurements taken directly on the industrial site demonstrate that this approach is available. [ABSTRACT FROM AUTHOR]