Assessing the validity and sensitivity of microbial processes within a hydrodynamic model

Ruprecht, Jamie; King, Ian P.; Mitrovic, Simon M.; Dafforn, Katherine A.; Miller, Brett; Deiber, M.; Westhorpe, Douglas P.; Hitchcock, James N.; Harrison, Adam J.; Glamore, William

doi:10.1016/j.watres.2022.118445

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…Where x, y, and z are the coordinates of the Cartesian system; 𝑢𝑢, 𝑣𝑣, and 𝑤𝑤 are the velocities in the directions of the Cartesian system, p is the water pressure, t is time, ε xx , ε xy , ε xz , ε yx , ε yy , ε yz , ε zx , ε zy , ε zz are the eddy turbulence coefficients, g is the acceleration due to gravity, 𝐷𝐷 𝑥𝑥 , 𝐷𝐷 𝑌𝑌 , and 𝐷𝐷 𝑧𝑧 are the eddy diffusion coefficients, 𝜌𝜌 is the density of water, Γ x , Γ y , and Γ z are the external forces; 𝜃𝜃 is the salinity, and 𝜃𝜃𝜃𝜃 is the salinity source/sink. The RMA11 model, which uses the finite element method, has been used successfully to model water quality in estuaries, bays, lakes, and rivers [15][16][17][18]. It receives the velocity, temperature, and salinity fields from the RMA10 model and uses them to solve the advection-diffusion constituent transport equations [15].…”

Section: Hydrodynamic and Water Quality Models Descriptionmentioning

confidence: 99%

Evaluation of Wastewater Discharge Reduction Scenarios in the Buenaventura Bay

Garcia¹,

Chang²,

Hernández³

2023

Preprint

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The RMA11 water quality model, which has been previously calibrated and validated, was coupled with the RMA10 3D hydrodynamic model to evaluate sanitation scenarios in Buenaventura Bay. The bay receives direct discharge of untreated wastewater from 500,000 people through 695 outlets along the coast. Five different effluent reduction scenarios were proposed and compared based on fecal coliform concentration as an indicator. The areas where values exceed the standard for primary contact were also used to evaluate the scenarios. The model results indicate poor water quality in the bay and how that the situation will become even more severe if immediate action is not taken. The proposed reduction in discharges in stages will have temporarily more severe effects than the current situation, but these will end when the treatment plant becomes operational. However, even with the plant in operation, complete sanitation of the bay cannot be achieved, and further measures must be considered.

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Section: Hydrodynamic and Water Quality Models Descriptionmentioning

confidence: 99%

Evaluation of Wastewater Discharge Reduction Scenarios in the Buenaventura Bay

Garcia¹,

Chang²,

Hernández³

2023

Preprint

View full text Add to dashboard Cite

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“…The RMA11 model, which uses the finite element method, has been successfully applied to model water quality in estuaries, bays, lakes, and rivers [25][26][27][28]. It receives the velocity, temperature, and salinity fields from the RMA10 model and uses them to solve advection-diffusion constituent transport equations [25].…”

Section: Hydrodynamic and Water Quality Models Descriptionmentioning

confidence: 99%

Evaluation of Wastewater Discharge Reduction Scenarios in the Buenaventura Bay

García-Rentería¹,

Nieto

Cortez

2023

Water

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Buenaventura Bay is facing severe pollution due to the direct discharge of untreated wastewater from 695 outlets along the coast, which serves 500,000 people. To address this issue, a study was conducted using the RMA11 water quality model, which was previously calibrated and validated, coupled with the RMA10 3D hydrodynamic model to assess sanitation scenarios in the bay. Five effluent reduction scenarios were proposed and compared based on fecal coliform concentration as an indicator, with evaluation also based on areas where fecal coliform concentrations exceeded the standard for primary contact. The model results revealed poor water quality in the bay, indicating that immediate action was necessary to prevent further deterioration. The proposed staged reduction in discharges would initially have more severe effects than the current situation, but this would improve when the treatment plant became operational. However, even with the plant in operation, the complete sanitation of the bay cannot be achieved, and further measures are required. This study emphasizes the urgent need for effective and sustainable measures to improve water quality in Buenaventura Bay and demonstrates the usefulness of the modeling approach in identifying effective sanitation scenarios to achieve this goal. The results highlight the need for a comprehensive management strategy to tackle pollution in the bay and provide insights for other regions facing similar challenges.

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