IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i5p2480-d755164.html
   My bibliography  Save this article

Techno-Economic Evaluation of Ozone Application to Reduce Sludge Production in Small Urban WWTPs

Author

Listed:
  • Dafne Crutchik

    (Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Av. Diagonal Las Torres 2640, Santiago 7941169, Chile)

  • Oscar Franchi

    (Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Av. Diagonal Las Torres 2640, Santiago 7941169, Chile)

  • David Jeison

    (Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile)

  • Gladys Vidal

    (Engineering and Biotechnology Environmental Group, Environmental Science Faculty & EULA—Chile Center, Universidad de Concepción, Concepción 4070411, Chile)

  • Alicia Pinto

    (ESVAL S.A., Cochrane 751, Valparaíso 2361810, Chile)

  • Alba Pedrouso

    (CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain)

  • José Luis Campos

    (Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Av. Diagonal Las Torres 2640, Santiago 7941169, Chile)

Abstract

In Chile, small wastewater treatment plants (WWTPs) (treatment capacity of less than 4,800 m 3 /d) are normally not designed with consideration for the potential valorization of generated sludge. For this reason, they are generally operated at high solids residence times (SRT) (15 d) to promote the decay of biomass, promoting less sludge production and reducing the costs associated with biomass management. Operation at high SRT implies the need for a larger activated sludge system, increasing capital costs. The implementation of a sludge-disintegration unit by ozonation in future WWTPs could enable operation at an SRT of 3 d, with low sludge generation. In this work, we evaluate how the implementation of a sludge-ozonation system in small WWTPs (200–4000 m 3 /d) would affect treatment costs. Four scenarios were studied: (1) a current WWTP operated at an SRT of 15 d, without a sludge ozonation system; (2) a WWTP operated at an SRT of 15 d, with a sludge-ozonation system that would achieve zero sludge production; (3) a WWTP operated at an SRT of 3 d, with a sludge-ozonation system that would provide the same sludge production as scenario 1; (4) a WWTP operated at an SRT of 15 d, with a sludge-ozonation system that would achieve zero sludge production. Economic analysis shows that the treatment costs for scenarios 1 and 2 are similar, while a reduction in cost of up to 47% is obtained for scenarios 3 and 4.

Suggested Citation

  • Dafne Crutchik & Oscar Franchi & David Jeison & Gladys Vidal & Alicia Pinto & Alba Pedrouso & José Luis Campos, 2022. "Techno-Economic Evaluation of Ozone Application to Reduce Sludge Production in Small Urban WWTPs," Sustainability, MDPI, vol. 14(5), pages 1-12, February.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:5:p:2480-:d:755164
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/5/2480/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/5/2480/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Giovanna Acampa & Maria Gabriella Giustra & Claudia Mariaserena Parisi, 2019. "Water Treatment Emergency: Cost Evaluation Tools," Sustainability, MDPI, vol. 11(9), pages 1-18, May.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Alba Martínez-López & Alejandro Ruiz-García & Ivone Pérez, 2020. "Social Cost Benefit Analysis of Port Handling Plans for Annex IV waste of MARPOL: A Case Study in Las Palmas Port," Sustainability, MDPI, vol. 12(6), pages 1-19, March.

    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:5:p:2480-:d:755164. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.