Optimized process intensification through dynamic performance simulation and evaluation of treatment alternatives for a wastewater treatment plant in Toronto

Ezzahraoui, Fatima-zahra; Hamza, Rania

doi:10.1016/j.rineng.2024.102047

Cited by 4 publications

References 21 publications

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Biofilm characterization and dynamic simulation of advanced rope media reactor for the treatment of primary effluent

Shewa,

Sun,

Bossy

et al. 2024

Water Environment Research

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Biofilm modeling is inherently complex, often requiring multiple assumptions and simplifications. In biofilm modeling, default or literature‐based values in biofilm systems are usually used to estimate biofilm parameters, including boundary layer, biofilm density, thickness, attachment, and detachment rates. This study aimed to characterize and model the biofilm of a specific rope‐type fixed media system, removing carbon and total inorganic nitrogen, coupled with sensitivity analysis. Among the five model parameters, the sensitivity analysis of this study showed that boundary layer thickness is the most influential parameter for predicting effluent ammonia and nitrate concentrations, and biofilm density is most sensitive with respect to effluent chemical oxygen demand (COD). The least sensitive parameter is the detachment rate. Based on the calculated mean absolute error (MAE) and root mean squared error (RMSE), the calibrated BioCord fixed‐film reactor (BFFR) model accurately predicted effluent ammonium and dissolved oxygen (DO) in the continuously aerated bench‐scale reactor (R1) and failed to predict well in the intermittently aerated bench‐scale reactor (R2). RMSE values calculated for NH3‐N and DO in R1 are 0.95 and 0.53 mg/L, respectively. In the BioCord pilot plant's case, ammonium‐N predicted by the model fit the measured values well, while it overpredicted DO concentrations.Practitioner Points Fixed biofilm BioCord reactors were studied for primary effluent treatment. A methodology was developed to characterize biofilms. Boundary layer thickness is the most influential parameter for predicting effluent ammonia and nitrate concentrations. Biofilm density is the most sensitive parameter with respect to effluent COD. The calibrated BFFR model can predict effluent ammonium, nitrite, and nitrate‐nitrogen.

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Biofilm characterization and dynamic simulation of advanced rope media reactor for the treatment of primary effluent

Shewa,

Sun,

Bossy

et al. 2024

Water Environment Research

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Enhancing industrial sustainability in complex production systems through energy hotspot identification: A multi-task learning with layer-wise relevance propagation approach

Bardeeniz,

Panjapornpon,

Hussain

et al. 2024

Results in Engineering

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Study on microbial metabolic mechanism of activated sludge denitrification by A2O process under strong solar radiation in highland habitat

PENG,

ZONG,

WANG

et al. 2024

Preprint

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The effects of plateau solar radiation on microbial abundance and diversity and metabolism during the formal operation of the A2O reactor were analyzed by running three parallel A2O units with solar radiation, constant temperature and room temperature laterally. The results showed that when the formal operation reached the 180th day, the nitrogen removal effect of the solar radiation A2O reactor decreased significantly compared with that of the constant temperature and room temperature units in general; the number of operational taxonomic units (OTUs) in the solar radiation, constant temperature and room temperature A2O systems were 1140, 972 and 1000, and the solar radiation reactor showed an increasing trend throughout the whole process, and the metabolic function of the dominant genera of microorganisms was dominated by organic matter degradation, denitrification and denitrogenation, and the metabolic pathways were dominated by carbon and nitrogen metabolism, and it was also found that the relative abundance of denitrifying bacteria (DNB) increased with the increase in the duration of solar radiation exposure. The bacterial diversity of the solar A2O system was lower than that of the constant and room temperature systems up to 90 days, and the relative abundance of some common dominant genera in the sludge was suppressed by solar radiation, but the abundance of some denitrification-related genera and their functional genes were instead strengthened in the solar radiation reactor.

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Optimized process intensification through dynamic performance simulation and evaluation of treatment alternatives for a wastewater treatment plant in Toronto

Cited by 4 publications

References 21 publications

Biofilm characterization and dynamic simulation of advanced rope media reactor for the treatment of primary effluent

Biofilm characterization and dynamic simulation of advanced rope media reactor for the treatment of primary effluent

Enhancing industrial sustainability in complex production systems through energy hotspot identification: A multi-task learning with layer-wise relevance propagation approach

Study on microbial metabolic mechanism of activated sludge denitrification by A2O process under strong solar radiation in highland habitat

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