Optimization of a Distributed Wastewater Treatment Network Considering Lumped Parameters Interrelations (original) (raw)

Computer Aided Chemical Engineering, 2017

Abstract

Abstract The present work addresses the optimization of a wastewater network. This problem has been generally addressed by Non Linear Programming and Mixed-Integer Non Linear Programming models. This study explores the potential of considering the component interrelations by taking into account some major types of lumped parameters namely Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD). Moreover, the combination of the Advanced Oxidation Processes (AOPs) with the conventional biological processes is also investigated. Such combination requires evaluating the increase of the biodegradability by using the BOD5/COD ratio method. Hence, the BOD5/COD ratio method is included into the mathematical formulation to model the removal efficiency of lumped parameters by the treatment units. This allows investigating the role of the component interrelation in the water network optimization problem. The comparison of the results obtained by using a conventional mathematical formulation and the proposed new formulation have shown the importance of accounting for the component interrelations in order to ensure the applicability of the attained solutions.

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