Mixing Zone Modeling from Effluent Discharge


Municipal and industrial water treatment plants as well as desalination plants generate effluents that are disposed to different water bodies. The discharge type can be temporal or permanent and the discharge point location could be located on surface or submarine. The main enviromental concern about the discharge is the behaviour from effluent chemicals/nutrients/bacteria on the water body and the associated dilution process to delimitate a mixing area and evaluate the impact on water quality, aquatic ecosystem and dependent species.

Hatarilabs develop mixing zone modeling from effluent discharge on rivers, lakes and oceans, taking into consideration the most relevant conditions related to water quality and flow.


The required baseline for the mixing zone modeling is divided on two main parts:

Water body

  • Bathymetry (precision less than 1m)

  • Water qualiy

  • Flow rate (rivers) or currents (ocean)


  • Discharge rate

  • Discharge geometry

  • Water quality


The numerical tool selected for this evaluation is OpenFOAM with its solver for miscible flow: interMixingFoam. This tool can handle single/multiple discharge points on complex geometries.

Contact us


Tel: +511 4491922

Cel (Whasapp): +51 940704654

Email: saulmontoya@hatarilabs.com

Saul Montoya

Saul Montoya es Ingeniero Civil graduado de la Pontificia Universidad Católica del Perú en Lima con estudios de postgrado en Manejo e Ingeniería de Recursos Hídricos (Programa WAREM) de la Universidad de Stuttgart con mención en Ingeniería de Aguas Subterráneas y Hidroinformática.


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