Simulating the dispersion of poisonous organic chemical compounds in wastewater treatment process through the active sludge method using the TOXChem model

Abstract

Naturally, microorganisms decompose the organic material existing in nature, both in the presence or absence of oxygen. The majority of materials such as poisonous chemical compounds, heavy metals, would prevent the treatment process from taking place, lead to the entry of these contaminants into the environment results in the emergence of numerous diseases. In the present study, using the TOXChem4.1 simulation model, attempts were made to simulate a wastewater treatment plant and then assess the dispersions of contaminants including 1,2-Dimethylnaphthalene, 1,3-Dinitropyrene, 1,6-Dimethylnaphthalene, 1,6-Dinitropyrene, and 17a-ethinylestradiol (EE2) in concentrations of a common scenario. The results of computer simulations showed that the EE2 contaminant is of the highest percentage of decomposition among others, due to its wider chemical structure. Consequently, it is clear that such contaminant is of the highest mass in the sludge exiting the treatment plant. In addition, the results of the simulations demonstrated that the highest volumes of gaseous pollutants take place in the modulation and initial sedimentation units.

Performance evaluation of an oily industrial wastewater treatment system using the application of activated sludge model No. 3

“…Even the most experienced engineers will find that optimizing wastewater treatment plants to achieve higher pollutant removal is exceedingly time‐consuming and fraught with uncertainties. This uncertainty can be reduced by modelling process changes to provide preliminary results for the scale‐up process (Aboagye et al, 2021; Al‐Wardy, Alquzweenib, & Al‐Saadi, 2021; Chan et al, 2009; Elawwad, Zaghloul, & Abdel‐Halim, 2017; El‐Monayeri, 2016; Gao et al, 2016; Gheibi et al, 2021; Henze et al, 1997; Metcalf and Eddy, Inc, et al, 2007; Nasr et al, 2011; Satoh et al, 2021; Stensel & Makinia, 2014; Sun et al, 2010).…”