Analysis of wastewater facultative pond using advection-diffusion model based on explicit finite difference method

Sunarsih, Sri; Sasongko, Dwi P.; Sutrisno, S.; Putri, Gitta Agnes; Hadiyanto, H.

doi:10.4491/eer.2019.496

Cited by 7 publications

(5 citation statements)

References 24 publications

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“…The low value of the determination coefficient obtained by the Ogata Bank model can be explained by the geometrical domain of the advection‐dispersion equation, which is 1D. This result is in accordance with those reported recently by Sunarsih et al (2021); they confirm that more complex the geometrical space, the more obvious is the process of moving the mass concentration (advection) and dispersion. In addition, various mathematical models were developed to solve 1D advection dispersion equation.…”

Section: Resultssupporting

confidence: 91%

Use of COMSOL software for modeling and simulation of copper removal in a dynamic mode on a new biowaste

Turkman

Moulai‐Mostefa

Bouras

2022

Water Environment Research

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The main purpose of this investigation is to model the results related to biosorption using COMSOL (Multiphysics 4.3a), and to solve the advection‐dispersion equation by using both linear and Langmuir models. A bidimensional model was then proposed to study the mass transfer in the process of copper ions sorption in a dynamic mode on cider vinegar residues. Sorption tests were realized by evaluating the influence of flow rate (0.75, 1, and 2.65 ml min−1), bed height (3.5, 7 and 8.5 cm), and copper initial concentration (169 and 300 mg L−1). For all cases, the mathematical formulation was solved by assuming that the column is homogeneous and the sorption is instantaneous. The corresponding results were exploited through breakthrough curve profiles, where it was shown that the solutions obtained by the “Langmuir COMSOL” model coincide with the experimental values. In contrast, the linear model has been unable to fit them. The optimal results were analyzed by Thomas, Adam‐Bohart Yoon Nelson, and Ogata‐Bank models, which proves that the Thomas method is well adapted with a satisfactory correlation coefficient (0.93). Further, the model validation was performed by determining the residual root mean square error, which was found less than 0.3, thereby indicating a reasonable concordance between the estimated and experimental points. The high sorption capacity obtained was around of 41.37 mg g−1, which suggests that the cider vinegar residues can be exploited as a low‐cost, available, and effective sorbent biomass in the field of the treatment of industrial effluents. Practitioner Points Cider vinegar residues (CVR) as low cost biosorbent were studied for continuous biosorption. A successful COMSOL model was proposed and validated. CVR is an effective biosorbent for copper fixed bed biosorption. High sorption capacity was around of 41.37 mg g−1 under optimal conditions.

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Section: Resultssupporting

confidence: 91%

Use of COMSOL software for modeling and simulation of copper removal in a dynamic mode on a new biowaste

Turkman

Moulai‐Mostefa

Bouras

2022

Water Environment Research

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“…Comparando-se os valores apresentados na Tabela 2 com os obtidos por Chaves et al (2018), observou-se um aumento significativo de 67,6% na remoção de DBO na ERQ Norte, ao variar seu desempenho de 27% para 45,2%. Entretanto a eficiência continuou ainda baixa, pois, em sistemas de lagoas de estabilização bem operados, o desempenho de remoção de DBO varia em torno de 80 a 95% (BANSAH; SUGLO, 2016;OBERLIN, 2018;SUNARSIH et al, 2020: ALVES et al, 2021.…”

Section: Resultsunclassified

Performance analysis of large wastewater treatment plants in Aracaju

Conceição¹,

Mendonça²,

Albuquerque³

2022

ANAP

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One of the biggest impacts on the country's water resources is the discharge of raw wastewater into rivers, which can be minimized with wastewater treatment. In this work, both the treatment systems performance used in four Wastewater Treatment Plants (WWTPs), which treat the domestic wastewater of Aracaju, and the compliance with the requirements of the current environmental legislation for the release of effluents were evaluated. To do so, physical-chemical, and bacteriological monitoring bulletins of the WWTPs were evaluated through the period of 1 year and 3 months. The WWTPs almost fully complied with all the conditions set out in the legislation for the parameters analyzed. Data analysis showed, in general, a better quality of the effluent from WWTP Orlando Dantas, with pollutant removal efficiencies very close to those found in the literature. However, the other stations, WWTP ERQ Norte, WWTP ERQ Sul and WWTP ERQ Leste, even fulfilling the legislation almost throughout all the studied period, achieved performance below expectations, due to the type of treatment technology adopted. With the evaluation of the results and the operating and maintenance conditions of the stations, it was concluded that there is a need to allocate resources for investments in a greater frequency of laboratory analysis and in the operation and maintenance of the infrastructure of the WWTPs. Furthermore, continuously training professionals involved in the operation of the systems will increase the performance of wastewater treatment structures. Consequently, there will have the improvement in the quality indices of treated wastewater, reduction of pollution and public health problems.

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“…The domestic wastewater in this study contained more pollutants and the partition ponds can degrade a large amount of organic matter in domestic wastewater (Sunarsih et al 2020); therefore, partition ponds were installed after the surface flow artificial wetlands. Parthenogenic ponds are large open ponds prone to the vertical stratification of heat, pH, and DO (Buchanan et al 2018).…”

Section: Improved Facultative Pondmentioning

confidence: 99%

Demonstration study of bypass multipond wetland system to enhance river water quality

Zeng

Xie

Guo

et al. 2022

Water Science and Technology

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This study focused on the water quality of a river in Wuhan City, China, that is surrounded by ponds that were transformed into a bypass multipond wetland system to improve river water quality. The bypass multipond wetland system included surface flow artificial wetlands, modified partition ponds, aeration reoxygenation ponds, ecological ponds, and other processes. After the stable operation of the process, the water transparency was higher than 60 cm and the dissolved oxygen (DO) was higher than 5 mg/L, while the ammonia nitrogen (NH3-N) concentration was less than 1.0 mg/L, total phosphorus (TP) was lower than 0.2 mg/L, and chemical oxygen demand (COD) was lower than 20 mg/L, achieving the treatment target. After monitoring the results of each process, the process which best enhanced the water transparency enhancement was the surface flow of the artificial wetlands and ecological ponds. The aeration reoxygenation pond had the best effect on DO enhancement. The processes that most affected NH3-N and TP removal were the surface flow artificial wetlands and ecological ponds. The modified parthenogenic pond had the greatest effect on COD removal. The bypass multi-pond wetland system not only improved the river water quality but also enhanced the river landscape, and can act as a reference for similar river water quality improvement actions.

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Analysis of wastewater facultative pond using advection-diffusion model based on explicit finite difference method

Cited by 7 publications

References 24 publications

Use of COMSOL software for modeling and simulation of copper removal in a dynamic mode on a new biowaste

Use of COMSOL software for modeling and simulation of copper removal in a dynamic mode on a new biowaste

Performance analysis of large wastewater treatment plants in Aracaju

Demonstration study of bypass multipond wetland system to enhance river water quality

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