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... influent COD entered into the STOAT 5.0 software as the influent COD is measured at the plant. As shown in Figures (3, 4). The influent COD from the analysis of samples for a period of three months is 726.25 ± 69.9 mg/L, the effluent COD for treated wastewater is 55.5 ± 9.86 mg/L, and the effluent COD from simulated STOAT 5.0 model is 61.11 ± 4.92 mg/L with (Root Mean Square Deviation) RMSD is (8), and the normalized root mean square deviation (NRMSD) is 13.58%, as shown Figure (3, 4) & Table (6). ...
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... shown in Figures (3, 4). The influent COD from the analysis of samples for a period of three months is 726.25 ± 69.9 mg/L, the effluent COD for treated wastewater is 55.5 ± 9.86 mg/L, and the effluent COD from simulated STOAT 5.0 model is 61.11 ± 4.92 mg/L with (Root Mean Square Deviation) RMSD is (8), and the normalized root mean square deviation (NRMSD) is 13.58%, as shown Figure (3, 4) & Table (6). ...
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... influent TSS from the analysis of samples for a period of three months is 216 ± 41.91 mg/L, the effluent TSS for treated wastewater is 21.1 ± 8.93 mg/L, and the effluent TSS from simulated STOAT model is 17.11± 1.41 mg/L, and RMSD is (3.2), and NRMSD is 18.5%, as shown in Figure ( Table (6). ...
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... of the simulated effluent COD, TSS, and TVSS, as well as the simulated influent DO shown in Figures (3-7) are very close with those appeared in Table (1) by difference ranges between 3 to 21%, which reflecting success and validity of the calibrated model according to Makinia et al. (2006 After obtaining an acceptable model to simulate the performance of the WWTP plant, several hypothetical simulations of biological wastewater treatment were performed with different characteristics to obtain the maximum COD value that can be accommodated by the WWTP in its current state. As the maximum COD value of 1000 mg/L allowed in the raw wastewater so that it can be treated in the 10th of Ramadan WWTP bringing the COD value in the treated wastewater of 80 mg/L, as shown in Figure ( ...
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... sensitivity analysis of the model was performed with the change of one of the parameters of the final sedimentation process, which is the vesilind velocity and ranges from (2, 2.5, 3, 3.5, and 4 m/s). Its effect on the final results of the plant is evident in Figures (10-13) &Table (7), whereas, all results improved with increasing the settling speed of the final tank and giving better results than opening new doors to increase research in fields of improved treatment efficiency. Sciences, 14(10): 22-34. ...
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... vesilind velocity and ranges from (2, 2.5, 3, 3.5, and 4 m/s). Its effect on the final results of the plant is evident in Figures (10-13) &Table (7), whereas, all results improved with increasing the settling speed of the final tank and giving better results than opening new doors to increase research in fields of improved treatment efficiency. Sciences, 14(10): 22-34. DOI: 10.22587/ajbas.2020.14.10.4 Fig. 10: TSS sensitivity analysis. ...
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