تقييم ونمذجة اداء محطة معالجة مياه الصرف الصحي في المعيميرة بمحافظة بابل لإزالة الملوثات من مياه الصرف الصحي البلدية

Rp-Evaluation and modeling of the performance of wastewater treatment plant in Al-Muamirah in the province of Babylon for the removal pollutant. pdf

Wastewater treatment plants (WWTPs) are operational systems that include different treatment processes working to avoid or reduce wastewater damage. Nowadays, a strategy combining of utilizing performance assessment methodologies and contemporary modeling techniques are used to aid in determining the efficient and suitable operation of these plants. The aim of this research is to evaluate the performance of the Al-Muamirah WWTP located in Babylon province in central Iraq as well as to model the plant by using the GPS-X program utilizing four scenarios. Al-Muamirah WWTP is one of the new plants in the region which using the oxidation ditch system.
In order to evaluate wastewater treatment plant, the quality of the influent raw wastewater and the effluent treated wastewater has been monitored over the year 2020 (from 1/2020 to 12/1020). The parameters (Biochemical Oxygen Demand (BOD) Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), Ammonia (NH3), Phosphorus (PO4), and the quantitative measure of the acidity or basicity (pH)) are selected to evaluate the performance efficiency of Al-Muamirah WWTP. The removal efficiency of each parameter in the influent and effluent wastewater is calculated and compared with the Iraqi standards.
Also, samples of influent and effluent wastewater were weekly tested for eight weeks (from 2/1/2021 to 20/2/2021). The measured contamination parameters of these samples were the BOD, COD, and TSS. According to the removal efficiency of these parameters during this period, the performance efficiency of Al-Muamirah WWTP was evaluated, and the model of this plant was built by using GPS-X (v.8) software. The simulation of this model was carried out by utilizing four scenarios.
The results of operational performance assessment of Al-Muamirah WWTP showed that the concentrations of all pollutants in the effluent wastewater has met the Iraqi standards. It was found that the average monthly concentrations of
the parameters BOD, COD, TSS, NH3, and PO4 during the year 2020 are 12 mg/L, 45 mg/L and 11 mg/L, 4 mg/L and 2 mg/L, respectively. The concentration of these parameters are met the Iraqi Quality Standards (IQS). In addition, the removal efficiency of the same parameters was 91%, 78%, 93%, 69%, and 68%, respectively. It is clear that the removal efficiency values of (BOD and TSS) and (COD, NH3, and PO4) can be considered good and satisfactory values, respectively.
The average weekly concentration values of the parameters BOD, COD and TSS in the effluent wastewater during the period from 2/1/2021 to 20/2/2021 were 10 mg/L, 47 mg/L, and 9 mg/L, respectively. These concentration values showed that the treated wastewater met the (IQS) for these parameters. As well, the removal efficiency of these parameters was 79%, 93%, 95%, respectively.
The results of modeling and simulation of Al-Muamirah WWTP by using GPS-X showed a good performance with high efficiency according to the input and output parameters under real and virtual scenarios. The four scenarios were applied on the model showed that the concentrations of the pollutant parameters BOD, COD, and TSS in the effluent wastewater remained within the acceptable limits. This is an indication of the good performance efficiency of the treatment system used in the plant and the adequacy and suitability of its design capacity.