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Membrane Water Treatment
  Volume 8, Number 5, September 2017 , pages 423-435
DOI: https://doi.org/10.12989/mwt.2017.8.5.423
 


Performance and flow field assessment of settling tanks using experimental and CFD modeling
Alireza Zamani Nouri and Mohammad Mehdi Heydari

 
Abstract
    Settling Basins are one of the most important and popular methods for removal of suspended sediments irrigation and drainage networks or power canals taking off from an alluvial river and wastewater treatment plant. Improving the performance and so increasing sediment removal efficiency of settling basins by an alternative method is necessary. In the present work, the effect of baffle and its angle of attack with the flow (9) on the sediment removal efficiency is investigated by conducting a series of experiments on a straight canal with 8 m length, 0.3 m width and 0.5 m height and 3 m length of basin equipped with an adjustable glass baffle. A numerical analysis has been carried out using ANSYS Fluent 3D software (a general purpose computational fluid dynamics simulation tool) for three Froude numbers from the experiments. The numerical and experimental results were found to match reasonably well.
 
Key Words
    baffle angle; removal efficiency; sedimentation basins; suspended sediment
 
Address
Alireza Zamani Nouri : Department of Civil Engineering, College of Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran
Mohammad Mehdi Heydari : Kahana Water and Wastewater Company, Iran
 

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