Modeling Electrodialysis and Photochemical Process for their Integration in Saline Wastewater Treatment

摘要

Oxidation processes can be used to treat industrial wastewater containing nonbiodegradable organic compounds. However, the presence of dissolved salts may inhibit or retard the treatment process. In this study, wastewater desalination by electrodialysis (ED) associated with an advanced oxidation process (photo-Fenton) was applied to a NaCl in water solution containing phenol. The influence of process variables on the on the demineralization factor was investigated for ED in pilot scale. A phenomenological approach was used to relate the phenol, salt and water fluxes with the driving force. The oxidation process was investigated in a laboratory batch reactor and a model based on artificial neural networks was developed by fitting the experimental data describing the reaction rate as a function of the input variables. With the experimental parameters of both processes, a dynamic model was developed to ED and a continuous model, using a plug flow reactor approach, to the oxidation process. Finally, the hybrid resulting simulation could validate different scenarios of the integrated system and can be used for further optimization.