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Implementation of a prototypal optical sorter as core of the new pre-treatment configuration of a mechanical–biological treatment plant treating OFMSW through anaerobic digestion

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  • Romero-Güiza, M.S.
  • Peces, M.
  • Astals, S.
  • Benavent, J.
  • Valls, J.
  • Mata-Alvarez, J.

Abstract

The pre-treatment of the organic fraction of municipal solid waste is one of the main challenges in mechanical–biological treatment plants equipped with anaerobic digesters. The present study shows the successful revamping of the Sant Adrià del Besós plant pre-treatment line, where a prototypal optical sorter, a wet-crusher, and a hydrocyclone–decanter substituted the previous pulper and decanter system. The prototypal optical sorter, which uses near-infrared spectroscopy, was able to enhance the organic matter content from 40% to 60% in a more efficient and less energy demanding way than conventional systems. The new configuration not only improved digester feedstock and performance but also led to a significant reduction of the treatment and maintenance costs. The high methane yield of the digester, between 480 and 580CH4m3t−1VS, together with an energy efficiency index of 2.2kWhproduced/kWhconsumed, demonstrated the viability of this novel configuration with respect to conventional ones. Thus, optical sorting arises as a new alternative for mechanical–biological treatment plants that needs to be constructed or revamped.

Suggested Citation

  • Romero-Güiza, M.S. & Peces, M. & Astals, S. & Benavent, J. & Valls, J. & Mata-Alvarez, J., 2014. "Implementation of a prototypal optical sorter as core of the new pre-treatment configuration of a mechanical–biological treatment plant treating OFMSW through anaerobic digestion," Applied Energy, Elsevier, vol. 135(C), pages 63-70.
    • Handle: RePEc:eee:appene:v:135:y:2014:i:c:p:63-70
    DOI: 10.1016/j.apenergy.2014.08.077
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    References listed on IDEAS

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    1. Browne, James D. & Allen, Eoin & Murphy, Jerry D., 2014. "Assessing the variability in biomethane production from the organic fraction of municipal solid waste in batch and continuous operation," Applied Energy, Elsevier, vol. 128(C), pages 307-314.
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    Cited by:

    1. Zamri, M.F.M.A. & Hasmady, Saiful & Akhiar, Afifi & Ideris, Fazril & Shamsuddin, A.H. & Mofijur, M. & Fattah, I. M. Rizwanul & Mahlia, T.M.I., 2021. "A comprehensive review on anaerobic digestion of organic fraction of municipal solid waste," Renewable and Sustainable Energy Reviews, Elsevier, vol. 137(C).
    2. Martí-Herrero, J. & Soria-Castellón, G. & Diaz-de-Basurto, A. & Alvarez, R. & Chemisana, D., 2019. "Biogas from a full scale digester operated in psychrophilic conditions and fed only with fruit and vegetable waste," Renewable Energy, Elsevier, vol. 133(C), pages 676-684.
    3. Tian, Jinyi & Ni, Long & Song, Tao & Shen, Chao & Zhao, Jianing, 2018. "Numerical study of foulant-water separation using hydrocyclones enhanced by ejection device: Effect of ejection velocity," Energy, Elsevier, vol. 163(C), pages 641-659.
    4. Romero-Güiza, M.S. & Vila, J. & Mata-Alvarez, J. & Chimenos, J.M. & Astals, S., 2016. "The role of additives on anaerobic digestion: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1486-1499.

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