IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i18p11355-d911564.html
   My bibliography  Save this article

The Effect of Mixing Chamber Configuration and Submersion Depth on Centrifugal Aerator Performance

Author

Listed:
  • Zhen Zhang

    (College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China)

  • Yuan Zheng

    (College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China)

  • Xiwang Xu

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Bin Peng

    (College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China)

Abstract

Centrifugal aerators are a vital piece of equipment in water treatment. To improve the efficiency and economy of their operation, a study of their mixing chamber structure and submergence depth was carried out using a combination of numerical simulations and experiments. A centrifugal aerator dissolved oxygen (DO) test bench was built and the numerical simulation was compared with the experiment, the inlet air flow rate showing only a 2.23% error, which verifies the reliability of the numerical simulation. The results show that the capacity of oxygen dissolved in the aeration tank increases and then decreases as the relative area ratio ( ð ) of the mixing chamber increases, reaching the best capacity at ð = 8.38. In the case of different submergence coefficients ( β ), the gas volume fraction increased by 31.29% on average at β = 0.15; the standard oxygen transfer rate (SOTR) increased and then decreased with the increase of β , with an average increase of 56.6%. Moreover, the oxygenation performance of centrifugal aerators was significantly improved by the reasonable submergence depth and the structure of the mixing chamber.

Suggested Citation

  • Zhen Zhang & Yuan Zheng & Xiwang Xu & Bin Peng, 2022. "The Effect of Mixing Chamber Configuration and Submersion Depth on Centrifugal Aerator Performance," Sustainability, MDPI, vol. 14(18), pages 1-20, September.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:18:p:11355-:d:911564
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/18/11355/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/18/11355/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:14:y:2022:i:18:p:11355-:d:911564. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.