Abstract
Sedimentation monitoring provides information about the properties of a sedimentation process based on non-invasive measurements. The information obtained from sedimentation monitoring can be used in the control and optimization of industrial sedimentation processes. In this paper we introduce a novel three-dimensional computational method for sedimentation monitoring using electrical impedance tomography (EIT). EIT measurements consist of electrical current and voltage measurements on the surface of the sedimentation tank and the objective is to estimate the electrical properties of the sedimentation process based on these boundary data. The method we propose is based on three-dimensional shape estimation and state estimation formulation of the EIT problem. We parametrize the sedimentation using the locations of the phase interfaces and conductivities of the phase layers. The state estimation problem is solved using the extended Kalman filter algorithm. The performance of the method is evaluated using simulated and experimental data. From the results a promising performance of the method can be seen.
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