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Development and Substantiation of Approaches to the Management of Sewage Sludge of Different Storage Periods

Author

Listed:
  • Anna Tsybina

    (Environmental Protection Department, Perm National Research Polytechnic University, 614990 Perm, Russia)

  • Christoph Wünsch

    (Department of Engineering and Environmental Science, Merseburg University of Applied Science, 06217 Merseburg, Germany)

  • Irina Glushankova

    (Environmental Protection Department, Perm National Research Polytechnic University, 614990 Perm, Russia)

  • Anna Arduanova

    (Environmental Protection Department, Perm National Research Polytechnic University, 614990 Perm, Russia)

Abstract

A widespread method of sewage sludge disposal is still simple storage in sludge lagoons. Subsequent thermal utilization is hardly possible because sludge properties change over time and energy content is reduced. Use as a soil conditioner in agriculture or landscaping is usually not possible due to high heavy metal contents. This paper describes a method in which a 10-year-old accumulated sewage sludge can be utilized as technical soil by mixing it with pyrolized fresh sewage sludge. For this purpose, physicochemical and toxicological characteristics of sewage sludge of different storage periods were identified, processes of thermal destruction of sewage sludge analyzed, toxicological characteristics of solid products of thermal sludge treatment determined, and the possibility of using the sewage sludge–pyrolysate mixture as technical soil was assessed. Results show that the gross calorific value of fresh and one-year stored sewage sludge is with approx. 15,000 kJ/kg dry basis sufficient to produce pyrolysate autothermally. It is also shown that when the pyrolysis residue is mixed with fresh or 1-year old sewage sludge, heavy metals can be immobilized and thus the leaching of heavy metals significantly reduced by up to 75%. The method described can thus be a possible option for recycling accumulated sewage sludge.

Suggested Citation

  • Anna Tsybina & Christoph Wünsch & Irina Glushankova & Anna Arduanova, 2023. "Development and Substantiation of Approaches to the Management of Sewage Sludge of Different Storage Periods," Energies, MDPI, vol. 16(15), pages 1-16, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5698-:d:1206458
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    References listed on IDEAS

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    1. Paul, A. & Deshamukhya, T. & Pal, J., 2022. "Investigation and utilization of Indian peat in the energy industry with optimal site-selection using Analytic Hierarchy Process: A case study in North-Eastern India," Energy, Elsevier, vol. 239(PC).
    2. Depci, Tolga & Karta, Mesut & Karaca, Huseyin, 2018. "Co-liquefaction process olive bagasse and peat with lignite and the effect of biomasses on the products and oil yield," Energy, Elsevier, vol. 156(C), pages 750-757.
    3. Jaroslav Moško & Michael Pohořelý & Siarhei Skoblia & Zdeněk Beňo & Michal Jeremiáš, 2020. "Detailed Analysis of Sewage Sludge Pyrolysis Gas: Effect of Pyrolysis Temperature," Energies, MDPI, vol. 13(16), pages 1-12, August.
    4. Kijo-Kleczkowska, Agnieszka & Szumera, Magdalena & Gnatowski, Adam & Sadkowski, Dominik, 2022. "Comparative thermal analysis of coal fuels, biomass, fly ash and polyamide," Energy, Elsevier, vol. 258(C).
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    Cited by:

    1. Anna Tsybina & Christoph Wünsch & Irina Glushankova, 2024. "Reagent Deodorization and Detoxification of Sewage Sludge with the Production of Reclamation Material," Energies, MDPI, vol. 17(5), pages 1-13, February.

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