Model Development, Calibration and Simulation of the Continuous-Flow Sequencing Reactor for BNR Applications


The complexity of biological activities and the number of process variables important to nutrient removal in wastewater treatment systems require the use of process simulation models. The utilization of advanced activated sludge process simulation models has become an increasingly powerful tool for the evaluation, design and optimization of biological nutrient removal (BNR) plants. Process simulation models can also help operators to optimize the performance of their plants and can assist municipalities in reducing their energy cost associated with aeration and methanol addition. The objectives of this white paper are to present a newly developed process simulation model for the continuous-flow sequencing reactor (CSR), describe the model development and calibration for Hampden Township’s Roth Lane Wastewater Treatment Plant, and predict plant performance by running simulations for different influent and operational scenarios.

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