| Modeling and Optimization of Seasonal Performance of Wastewater Stabilization Ponds in Semi-Arid Regions |
| کد مقاله : 1014-IWWA (R1) |
| نویسندگان |
|
جواد محبوبنسب *، محمد یوسفی Department of Chemical Engineering, Arv.C., Islamic Azad University, Abadan, Iran. |
| چکیده مقاله |
| Wastewater stabilization ponds are one of the most common wastewater treatment methods in semi-arid regions due to their low cost and operational simplicity. However, the performance of these systems is strongly influenced by seasonal and climatic conditions. In this study, using the data reported by Mansouri et al. (2011) for the wastewater stabilization ponds at the Birjand treatment plant, the seasonal performance of this system was investigated and modeled over a two-year period (2007-2009). Parameters including pH, COD, BOD₅, and TSS had been measured at the inlet and outlet of three ponds across four seasons. Analysis of the data revealed that the maximum removal efficiencies for COD (75.5%) and BOD₅ (82.7%) occurred in summer, while the maximum TSS removal efficiency (77.5%) was observed in winter. ANOVA statistical analysis revealed significant differences between seasonal performances (p<0.001). Additionally, multiple linear regression models with high coefficients of determination (R²>0.88) were developed to predict removal efficiency based on temperature and pH. Optimization results indicated that the best performance was achieved within the temperature range of 24-27°C and pH of 7.9-8.0. Based on the findings, it is recommended to increase hydraulic retention time during cold seasons and employ floating covers to reduce heat loss. |
| کلیدواژه ها |
| Stabilization pond, Wastewater treatment, Seasonal performance, Removal efficiency, Regression model, Optimization |
| وضعیت: پذیرفته شده برای ارسال فایل های ارائه پوستر |
