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Performance Assessment of Secondary Settling Tanks Using CFD Modeling

Author

Listed:
  • Savvas Xanthos
  • Minwei Gong
  • Krish Ramalingam
  • John Fillos
  • Alan Deur
  • Keith Beckmann
  • John McCorquodale

Abstract

Amongst the principal separation processes used to treat effluents in the water industry is the sedimentation of solid particulates from the carrier fluid known as mixed liquor by the force of gravity. New York City DEP is in the process of upgrading its Upper East River water pollution control plants (WPCP’s) to incorporate biological nitrogen removal (BNR). The rectangular final settling tanks (FSTs) are a central link in the treatment process and often times a limiting factor in terms of the solids handling capacity especially when high throughput requirements need to be met. The objective of this study was to develop a 3D Computational Fluid Dynamics (CFD) model based on the exact geometry of the existing Gould II type FSTs in Battery “E” at the Wards Island WPCP and calibrate and validate it with in-situ data collected at the site. The goal of this study is to illustrate how the different modeling approaches applied on the physical phenomena that take place in the tank affect the outcome of a CFD model and its predictions. It is common for internal baffles to be added at the inlet and within the tank to handle high flow requirements such as wet weather storms. This model has been used as a tool to assess the internal behavior of such baffles and assess the clarifier’s performance based on different inlet baffle configurations. Copyright Springer Science+Business Media B.V. 2011

Suggested Citation

  • Savvas Xanthos & Minwei Gong & Krish Ramalingam & John Fillos & Alan Deur & Keith Beckmann & John McCorquodale, 2011. "Performance Assessment of Secondary Settling Tanks Using CFD Modeling," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(4), pages 1169-1182, March.
    • Handle: RePEc:spr:waterr:v:25:y:2011:i:4:p:1169-1182
    DOI: 10.1007/s11269-010-9620-1
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    Cited by:

    1. David Tsai & Rameshprabu Ramaraj & Paris Chen, 2012. "A Method of Short-Circuiting Comparison," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(9), pages 2689-2702, July.
    2. Zhi Chen & Sangsoo Han & Fa-Yi Zhou & Ke Wang, 2013. "A CFD Modeling Approach for Municipal Sewer System Design Optimization to Minimize Emissions into Receiving Water Body," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(7), pages 2053-2069, May.

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