Impact of Baffle Walls on Area and Hydraulic Detention Time Needed for Wastewater Stabilization Ponds at Different Pollutant Loads
Abstract
This paper mainly presents the in-depth analysis performed to explore the effect of baffle walls (BWs) on the requirement of the area and hydraulic detention time (DT) for wastewater stabilization ponds (WSPs). In addition, the influence of various concentrations of fecal coliforms and BOD5 is also presented. The meteorological parameters used to perform the analysis represent Ayvadere, a neighborhood in Arakli city of the Trabzon Province, Turkey. There were 12 different combinations of fecal coliforms and BOD5 influent loads. The analysis also included 3 different configurations of ponds, 6 various numbers, and 5 different lengths of the BWs, with which 720 analyses were performed. Configuration 1 gave minimum area and DT by meeting all the WSPs design and irrigation class-B effluent standards. There were 2 BWs with a length of 50 % of the design length of facultative ponds. Moreover, fecal coliforms and BOD5 were 106 (MPN/100 ml) and 300 (mg/l) simultaneously. According to the findings of the study, increasing the number and length of BWs reduces the area and DT required for WSPs. Furthermore, the results also show that the need for both things increased by increasing the pollution load. The cost of BWs is an essential factor compared to the decrease in area. So, an optimization study is recommended using various methods available in the literature. Besides, an examination must be conducted experimentally to compare the results of the analysis performed in this research.
Keywords
Baffle walls, Biochemical Oxygen Demand, Fecal Coliforms, Mathematical Analysis, Wastewater Stabilization Ponds
References
- Araújo, G.M. and Lima Neto, I.E., 2018, Removal of organic matter in stormwater ponds: a plug-flow model generalisation from waste stabilisation ponds to shallow rivers, Urban Water J., Vol. 15(9), 918-924. DOI: https://doi.org/10.1080/1573062X.2019.1581231
- Abagale, F.K. and Richard, A.O., 2021, Diversity Profiling of Helminth Eggs in Waste Stabilisation Ponds in the Tamale Metropolis, Ghana, Ghana J. Tech., Vol. 7(2), pp.1-11.
- DOI: https://doi.org/10.47881/255.967x
- Garcia-Rodriguez, O., Mousset, E., Olvera-Vargas, H. and Lefebvre, O., 2022, Electrochemical treatment of highly concentrated wastewater: A review of experimental and modeling approaches from lab-to full-scale, Crit. Rev. Environ. Sci. Technol., Vol. 52(2), 240-309.
- DOI: https://doi.org/10.1080/10643389.2020.1820428
- George, I., Crop, P., and Servais, P., 2002, Fecal coliform removal in wastewater treatment plants studied by plate counts and enzymatic methods, Water Res., Vol. 36, 2607–2617.
- DOI: https://doi.org/10.1016/S0043-1354(01)00475-4
- Goodarzi, D., Mohammadian, A., Pearson, J. and Abolfathi, S., 2022, Numerical modelling of hydraulic efficiency and pollution transport in waste stabilization ponds, Ecol. Eng., Vol. 182, 106702. DOI: https://doi.org/10.1016/j.ecoleng.2022.106702
- Liotta, F., Chatellier, P., Esposito, G., Fabbricino, M., Van Hullebusch, E.D. and Lens, P.N., 2014, Hydrodynamic mathematical modelling of aerobic plug flow and nonideal flow reactors: a critical and historical review, Crit. Rev. Environ. Sci. Technol., Vol. 44(23), 2642-2673.
- DOI: https://doi.org/10.1080/10643389.2013.829768