Implementation of Activated Sludge Model No. 3 as an educational tool: bioXL3

Demi̇r, Selami; Demır, Neslihan Manav

doi:10.1002/cae.22292

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…Only after understanding and mastering can the application of accurate solutions be better carried out. Figure 2 shows the expanded form of the Tanh function [8]. The specific description of the Tanh-function expansion method is to give a nonlinear differential equation as shown in equation ( 1)…”

Section: Tanh-function Methods Introductionmentioning

confidence: 99%

Nonlinear Differential Equations in the Teaching Model of Educational Informatisation

Alassafi

Omar

2021

Applied Mathematics and Nonlinear Sciences

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This article takes the nonlinear differential equation model as an example and uses information technology to create a new course teaching model. The computing software Maple is effectively applied to the precise solution of nonlinear differential equations through the analysis of examples. The overall goal and specific implementation of the teaching plan to integrate ordinary differential equations and information technology have been completed. The study found that the teaching plan proposed in the article is assisted by information technology, with teachers and students participating in an interactive and exploratory teaching method. This method is worthy of further promotion.

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Section: Tanh-function Methods Introductionmentioning

confidence: 99%

Nonlinear Differential Equations in the Teaching Model of Educational Informatisation

Alassafi

Omar

2021

Applied Mathematics and Nonlinear Sciences

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“…The simulation tool is an improved version of bioXL [28] and bioXL3 [29] and is designed with a user-friendly and easy-touse interface. It has extensive error handling procedures that produce proper warning messages in case of erroneous entries.…”

Section: Wastewater Characterizationmentioning

confidence: 99%

Model-based investigation of the effects of reactors’ hydraulic retention times on phosphorus removal efficiency in an AO process

Yaşar,

Manav Demir,

Atçı

et al. 2023

Pamukkale J Eng Sci

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This study presents the results of a simulation work performed using an activated sludge model to investigate the effects of reactors' hydraulic retention times (HRT) on phosphorus removal in a hypothetical anaerobic-oxic (AO) process. The simulations were performed for low, medium, and high influent phosphorus loads corresponding to influent C/P ratios of 100/1.0, 100/1.5, 100/2.0. For each of influent phosphorus loads, various anaerobic volume fractions (AVF) between 0.125 and 0.625 were used to test the response of the process that was investigated as a result of the change in hydraulic retention times. Additionally, removal efficiencies for chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP), and total suspended solids (TSS) were also calculated. As a result of the study, maximum COD removal efficiencies for 100/2.0, 100/1.5 and 100/1.0 influent C/P ratios were determined as 91.8% for 0.250 AVF (for 100/2.0 and 100/1.5), and 91.7% for both 0.125 and 0.250 AVF, respectively. In all influent C/P ratios, the maximum TN removal efficiency was determined as 56.3% at 0.625 AVF, and the maximum TSS removal efficiency was determined as 93.3% at 0.125 AVF. Maximum TP removal efficiencies were determined as 92.8%, 90.8% and 86.2% for 100/2, 100/1.5 and 100/1 input C/P ratios at 0.375 AVF, respectively. Results showed that total phosphorus (TP) removal efficiency is determined by both influent C/P ratio and AVF in AO process. Of these, the effect of AVF is more prominent. For efficient removal of phosphorus, AVF ratios of 0.25 to 0.375 should be employed. Bu çalışmada, bir kuramsal anaerobik-oksik (AO) prosesinde reaktörlerin hidrolik bekletme sürelerinin (HRT) fosfor giderimi üzerindeki etkilerinin bir aktif çamur modeli kullanılaraksimülasyonuna ilişkin bir çalışmanın sonuçları sunulmuştur. Simülasyonlar, C/P oranları sırasıyla 100/1.0, 100/1.5 ve 100/2.0 değerlerine karşılık gelen düşük, orta ve güçlü giriş fosfor yüklerinde gerçekleştirilmiştir. Giriş fosfor yüklerinin her biri için 0.125 ile 0.625 arasında değişen anaerobik hacim fraksiyonlarında (AHF) denemeler yapılarak HRT değişimi için prosesin tepkisi incelenmiştir. Ayrıca, kimyasal oksijen ihtiyacı (KOİ), toplam azot (TN), toplam fosfor (TP), ve askıda katı madde (AKM) için giderim verimleri de hesaplanmıştır. Çalışmada, 100/1.0, 100/1.5 ve 100/2.0 giriş C/P oranlarındaki en yüksek KOİ giderim verimleri 0.250 AHF'de %91.8 (100/2.0 ve 100/1.5 için) ve 0.125 ile 0.250 AHF'de %91.7 olarak belirlenmiştir. Tüm giriş fosfor yükleri için en yüksek TN giderim verimi 0.625 AHF'de %56.3, en yüksek AKM giderim verimi ise 0.125 AHF'de %93.3 olarak hesaplanmıştır. En yüksek TP giderim verimleri 100/1.0, 100/1.5 ve 100/2.0 giriş C/P oranları için sırasıyla %92.8, %90.8 ve %86.2 olarak, 0.375 AHF'de gözlenmiştir. Sonuçlar, toplam fosfor (TP) giderim veriminin giriş C/P oranı ve anaerobik hacim fraksiyonuna (AHF) bağlı olduğunu ortaya koymuştur. Bunlarda AHF'nin etkisi daha baskındır. Etkin fosfor giderimi için AHF'nin 0.250 ile 0.375 arasında tutulması ...

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Model-based fractionation of biomass in a biological nutrient removal system and its effect on the removal efficiencies

Demır

2022

J Environ Health Sci Engineer

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Implementation of Activated Sludge Model No. 3 as an educational tool: bioXL3

Cited by 7 publications

References 25 publications

Nonlinear Differential Equations in the Teaching Model of Educational Informatisation

Nonlinear Differential Equations in the Teaching Model of Educational Informatisation

Model-based investigation of the effects of reactors’ hydraulic retention times on phosphorus removal efficiency in an AO process

Model-based fractionation of biomass in a biological nutrient removal system and its effect on the removal efficiencies

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