Data pre-processor for wastewater treatment simulations

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Wastewater treatment processes are complex systems with many interconnected unit processes performing physical, chemical and biological transformations to achieve water treatment goals. Wastewater treatment process simulator is an essential tool for analyzing the performance of these complex systems and helps optimize goals. Wastewater treatment plant simulator can track the mass flows of various compounds and calculate conversion rates in unit processes to predict effluent quality, sludge production, oxygen and chemical demand, and other key process indicators in wastewater treatment plant. In a simulation study, one of the important steps is to collect and validate plant operational data. The need and importance of high quality data cannot be overlooked for performing high quality simulations. At present, most of the simulation studies are conducted using historical data from wastewater treatment plants. There is, however, growing interest in using real time data in wastewater simulators for operational decision support. The advancements in on-line sensors and sensor applications at wastewater treatment plants are producing large volume of data. To extend the applicability of simulators for operational support system, two issues related to data preparation needs to be resolved: 1) Improving data quality using advanced data cleaning; 2) Automation of data preparation. To address these issues, we will develop an automatic data cleaning tool which can be used in off-line or on-line in the proposed project.